Merge v2.5 work

.travis.yml

@@ -5,7 +5,6 @@ addons:
   postgresql: "9.4"
 language: python
 python:
-  - "2.7"
   - "3.5"
 install:
   - pip install -r requirements.txt

CHANGELOG.md

@@ -1,3 +1,82 @@
+v2.5.0 (FUTURE)
+
+## Notes
+
+### Python 3 Required
+
+As promised, Python 2 support has been completed removed. Python 3.5 or higher is now required to run NetBox. Please see [our Python 3 migration guide](https://netbox.readthedocs.io/en/stable/installation/migrating-to-python3/) for assistance with upgrading.
+
+### Removed Deprecated User Activity Log
+
+The UserAction model, which was deprecated by the new change logging feature in NetBox v2.4, has been removed. If you need to archive legacy user activity, do so prior to upgrading to NetBox v2.5, as the database migration will remove all data associated with this model.
+
+### View Permissions in Django 2.1
+
+Django 2.1 introduces view permissions for object types (not to be confused with object-level permissions). Implementation of [#323](https://github.com/digitalocean/netbox/issues/323) is planned for NetBox v2.6. Users are encourage to begin assigning view permissions as desired in preparation for their eventual enforcement.
+
+### upgrade.sh No Longer Invokes sudo
+
+The `upgrade.sh` script has been tweaked so that it no longer invokes `sudo` internally. This was done to ensure compatibility when running NetBox inside a Python virtual environment. If you need elevated permissions when upgrading NetBox, call the upgrade script with `sudo upgrade.sh`.
+
+## New Features
+
+### Patch Panels and Cables ([#20](https://github.com/digitalocean/netbox/issues/20))
+
+NetBox now supports modeling physical cables for console, power, and interface connections. The new pass-through port component type has also been introduced to model patch panels and similar devices.
+
+## Enhancements
+
+* [#450](https://github.com/digitalocean/netbox/issues/450) - Added `outer_width` and `outer_depth` fields to rack model
+* [#867](https://github.com/digitalocean/netbox/issues/867) - Added `description` field to circuit terminations
+* [#1444](https://github.com/digitalocean/netbox/issues/1444) - Added an `asset_tag` field for racks
+* [#1931](https://github.com/digitalocean/netbox/issues/1931) - Added a count of assigned IP addresses to the interface API serializer
+* [#2000](https://github.com/digitalocean/netbox/issues/2000) - Dropped support for Python 2
+* [#2053](https://github.com/digitalocean/netbox/issues/2053) - Introduced the `LOGIN_TIMEOUT` configuration setting
+* [#2057](https://github.com/digitalocean/netbox/issues/2057) - Added description columns to interface connections list
+* [#2104](https://github.com/digitalocean/netbox/issues/2104) - Added a `status` field for racks
+* [#2165](https://github.com/digitalocean/netbox/issues/2165) - Improved natural ordering of Interfaces
+* [#2292](https://github.com/digitalocean/netbox/issues/2292) - Removed the deprecated UserAction model
+* [#2367](https://github.com/digitalocean/netbox/issues/2367) - Removed deprecated RPCClient functionality
+* [#2426](https://github.com/digitalocean/netbox/issues/2426) - Introduced `SESSION_FILE_PATH` configuration setting for authentication without write access to database
+* [#2594](https://github.com/digitalocean/netbox/issues/2594) - `upgrade.sh` no longer invokes sudo
+
+## Changes From v2.5-beta2
+
+* [#2474](https://github.com/digitalocean/netbox/issues/2474) - Add `cabled` and `connection_status` filters for device components
+* [#2616](https://github.com/digitalocean/netbox/issues/2616) - Convert Rack `outer_unit` and Cable `length_unit` to integer-based choice fields
+* [#2622](https://github.com/digitalocean/netbox/issues/2622) - Enable filtering cables by multiple types/colors
+* [#2624](https://github.com/digitalocean/netbox/issues/2624) - Delete associated content type and permissions when removing InterfaceConnection model
+* [#2626](https://github.com/digitalocean/netbox/issues/2626) - Remove extraneous permissions generated from proxy models
+* [#2632](https://github.com/digitalocean/netbox/issues/2632) - Change representation of null values from `0` to `null`
+* [#2639](https://github.com/digitalocean/netbox/issues/2639) - Fix preservation of length/dimensions unit for racks and cables
+* [#2648](https://github.com/digitalocean/netbox/issues/2648) - Include the `connection_status` field in nested represenations of connectable device components
+* [#2649](https://github.com/digitalocean/netbox/issues/2649) - Add `connected_endpoint_type` to connectable device component API representations
+
+## API Changes
+
+* The `/extras/recent-activity/` endpoint (replaced by change logging in v2.4) has been removed
+* The `rpc_client` field has been removed from dcim.Platform (see #2367)
+* Introduced a new API endpoint for cables at `/dcim/cables/`
+* New endpoints for front and rear pass-through ports (and their templates) in parallel with existing device components
+* The fields `interface_connection` on Interface and `interface` on CircuitTermination have been replaced with `connected_endpoint` and `connection_status`
+* A new `cable` field has been added to console, power, and interface components and to circuit terminations
+* New fields for dcim.Rack: `status`, `asset_tag`, `outer_width`, `outer_depth`, `outer_unit`
+* The following boolean filters on dcim.Device and dcim.DeviceType have been renamed:
+    * `is_console_server`: `console_server_ports`
+    * `is_pdu`: `power_outlets`
+    * `is_network_device`: `interfaces`
+* The following new boolean filters have been introduced for dcim.Device and dcim.DeviceType:
+    * `console_ports`
+    * `power_ports`
+    * `pass_through_ports`
+* The field `interface_ordering` has been removed from the DeviceType serializer
+* Added a `description` field to the CircuitTermination serializer
+* Added `ipaddress_count` to InterfaceSerializer to show the count of assigned IP addresses for each interface
+* The `available-prefixes` and `available-ips` IPAM endpoints now return an HTTP 204 response instead of HTTP 400 when no new objects can be created
+* Filtering on null values now uses the string `null` instead of zero
+
+---
+
 v2.4.9 (2018-12-07)
 
 ## Enhancements

README.md

@@ -16,8 +16,6 @@ or join us in the #netbox Slack channel on [NetworkToCode](https://networktocode
 
 ### Build Status
 
-NetBox is built against both Python 2.7 and 3.5. Python 3.5 or higher is strongly recommended.
-
 |             | status |
 |-------------|------------|
 | **master** | [![Build Status](https://travis-ci.org/digitalocean/netbox.svg?branch=master)](https://travis-ci.org/digitalocean/netbox) |

base_requirements.txt

@@ -1,25 +1,72 @@
-# django-filter-1.1.0 breaks with Django-2.1
-Django>=1.11,<2.1
+# The Python web framework on which NetBox is built
+# https://github.com/django/django
+Django
+
+# Django middleware which permits cross-domain API requests
+# https://github.com/OttoYiu/django-cors-headers
 django-cors-headers
+
+# Runtime UI tool for debugging Django
+# https://github.com/jazzband/django-debug-toolbar
 django-debug-toolbar
-# django-filter-2.0.0 drops Python 2 support (blocked by #2000)
-django-filter==1.1.0
+
+# Library for writing reusable URL query filters
+# https://github.com/carltongibson/django-filter
+django-filter
+
+# Modified Preorder Tree Traversal (recursive nesting of objects)
+# https://github.com/django-mptt/django-mptt
 django-mptt
+
+# Abstraction models for rendering and paginating HTML tables
+# https://github.com/jieter/django-tables2
 django-tables2
+
+# User-defined tags for objects
+# https://github.com/alex/django-taggit
 django-taggit
+
+# A Django REST Framework serializer which represents tags
+# https://github.com/glemmaPaul/django-taggit-serializer
 django-taggit-serializer
+
+# A Django field for representing time zones
+# https://github.com/mfogel/django-timezone-field/
 django-timezone-field
-# https://github.com/encode/django-rest-framework/issues/6053
-djangorestframework==3.8.1
+
+# A REST API framework for Django projects
+# https://github.com/encode/django-rest-framework
+djangorestframework
+
+# Swagger/OpenAPI schema generation for REST APIs
+# https://github.com/axnsan12/drf-yasg
 drf-yasg[validation]
+
+# Python interface to the graphviz graph rendering utility
+# https://github.com/xflr6/graphviz
 graphviz
-Markdown
-natsort
-ncclient
+
+# Simple markup language for rendering HTML
+# https://github.com/Python-Markdown/markdown
+# py-gfm requires Markdown<3.0
+Markdown<3.0
+
+# Library for manipulating IP prefixes and addresses
+# https://github.com/drkjam/netaddr
 netaddr
-paramiko
+
+# Fork of PIL (Python Imaging Library) for image processing
+# https://github.com/python-pillow/Pillow
 Pillow
+
+# PostgreSQL database adapter for Python
+# https://github.com/psycopg/psycopg2
 psycopg2-binary
+
+# GitHub-flavored Markdown extensions
+# https://github.com/zopieux/py-gfm
 py-gfm
+
+# Extensive cryptographic library (fork of pycrypto)
+# https://github.com/Legrandin/pycryptodome
 pycryptodome
-xmltodict

docs/administration/netbox-shell.md

@@ -9,7 +9,7 @@ This will launch a customized version of [the built-in Django shell](https://doc
 ```
 $ ./manage.py nbshell
 ### NetBox interactive shell (jstretch-laptop)
-### Python 2.7.6 | Django 1.11.3 | NetBox 2.1.0-dev
+### Python 3.5.2 | Django 2.0.8 | NetBox 2.4.3
 ### lsmodels() will show available models. Use help(<model>) for more info.
 ```
 

docs/configuration/optional-settings.md

@@ -133,6 +133,14 @@ Setting this to True will permit only authenticated users to access any part of
 
 ---
 
+## LOGIN_TIMEOUT
+
+Default: 1209600 seconds (14 days)
+
+The liftetime (in seconds) of the authentication cookie issued to a NetBox user upon login.
+
+---
+
 ## MAINTENANCE_MODE
 
 Default: False
@@ -223,6 +231,14 @@ The file path to the location where custom reports will be kept. By default, thi
 
 ---
 
+## SESSION_FILE_PATH
+
+Default: None
+
+Session data is used to track authenticated users when they access NetBox. By default, NetBox stores session data in the PostgreSQL database. However, this inhibits authentication to a standby instance of NetBox without write access to the database. Alternatively, a local file path may be specified here and NetBox will store session data as files instead of using the database. Note that the user as which NetBox runs must have read and write permissions to this path.
+
+---
+
 ## TIME_ZONE
 
 Default: UTC

docs/core-functionality/circuits.md

@@ -25,7 +25,7 @@ Circuit types are fully customizable.
 
 A circuit may have one or two terminations, annotated as the "A" and "Z" sides of the circuit. A single-termination circuit can be used when you don't know (or care) about the far end of a circuit (for example, an Internet access circuit which connects to a transit provider). A dual-termination circuit is useful for tracking circuits which connect two sites.
 
-Each circuit termination is tied to a site, and optionally to a specific device and interface within that site. Each termination can be assigned a separate downstream and upstream speed independent from one another. Fields are also available to track cross-connect and patch panel details.
+Each circuit termination is tied to a site, and may optionally be connected via a cable to a specific device interface or pass-through port. Each termination can be assigned a separate downstream and upstream speed independent from one another. Fields are also available to track cross-connect and patch panel details.
 
 !!! note
     A circuit represents a physical link, and cannot have more than two endpoints. When modeling a multi-point topology, each leg of the topology must be defined as a discrete circuit.

docs/core-functionality/devices.md

@@ -4,12 +4,6 @@ A device type represents a particular make and model of hardware that exists in
 
 Device types are instantiated as devices installed within racks. For example, you might define a device type to represent a Juniper EX4300-48T network switch with 48 Ethernet interfaces. You can then create multiple devices of this type named "switch1," "switch2," and so on. Each device will inherit the components (such as interfaces) of its device type at the time of creation. (However, changes made to a device type will **not** apply to instances of that device type retroactively.)
 
-The device type model includes three flags which inform what type of components may be added to it:
-
-* `is_console_server`: This device type has console server ports
-* `is_pdu`: This device type has power outlets
-* `is_network_device`: This device type has network interfaces
-
 Some devices house child devices which share physical resources, like space and power, but which functional independently from one another. A common example of this is blade server chassis. Each device type is designated as one of the following:
 
 * A parent device (which has device bays)
@@ -32,6 +26,8 @@ Each device type is assigned a number of component templates which define the ph
 * Power ports
 * Power outlets
 * Network interfaces
+* Front ports
+* Rear ports
 * Device bays (which house child devices)
 
 Whenever a new device is created, its components are automatically created per the templates assigned to its device type. For example, a Juniper EX4300-48T device type might have the following component templates defined:
@@ -56,32 +52,28 @@ When assigning a multi-U device to a rack, it is considered to be mounted in the
 
 A device is said to be full depth if its installation on one rack face prevents the installation of any other device on the opposite face within the same rack unit(s). This could be either because the device is physically too deep to allow a device behind it, or because the installation of an opposing device would impede airflow.
 
-## Device Roles
-
-Devices can be organized by functional roles. These roles are fully customizable. For example, you might create roles for core switches, distribution switches, and access switches.
-
----
-
-# Device Components
+## Device Components
 
-There are six types of device components which comprise all of the interconnection logic with NetBox:
+There are eight types of device components which comprise all of the interconnection logic with NetBox:
 
 * Console ports
 * Console server ports
 * Power ports
 * Power outlets
 * Network interfaces
+* Front ports
+* Rear ports
 * Device bays
 
-## Console
+### Console
 
 Console ports connect only to console server ports. Console connections can be marked as either *planned* or *connected*.
 
-## Power
+### Power
 
 Power ports connect only to power outlets. Power connections can be marked as either *planned* or *connected*.
 
-## Interfaces
+### Interfaces
 
 Interfaces connect to one another in a symmetric manner: If interface A connects to interface B, interface B therefore connects to interface A. Each type of connection can be classified as either *planned* or *connected*.
 
@@ -91,10 +83,20 @@ Each interface can also be enabled or disabled, and optionally designated as man
 
 VLANs can be assigned to each interface as either tagged or untagged. (An interface may have only one untagged VLAN.)
 
-## Device Bays
+### Pass-through Ports
+
+Pass-through ports are used to model physical terminations which comprise part of a longer path, such as a cable terminated to a patch panel. Each front port maps to a position on a rear port. A 24-port UTP patch panel, for instance, would have 24 front ports and 24 rear ports. Although this relationship is typically one-to-one, a rear port may have multiple front ports mapped to it. This can be useful for modeling instances where multiple paths share a common cable (for example, six different fiber connections sharing a 12-strand MPO cable).
+
+Pass-through ports can also be used to model "bump in the wire" devices, such as a media convertor or passive tap.
+
+### Device Bays
 
 Device bays represent the ability of a device to house child devices. For example, you might install four blade servers into a 2U chassis. The chassis would appear in the rack elevation as a 2U device with four device bays. Each server within it would be defined as a 0U device installed in one of the device bays. Child devices do not appear within rack elevations, but they are included in the "Non-Racked Devices" list within the rack view.
 
+## Device Roles
+
+Devices can be organized by functional roles. These roles are fully customizable. For example, you might create roles for core switches, distribution switches, and access switches.
+
 ---
 
 # Platforms
@@ -118,3 +120,25 @@ Inventory items represent hardware components installed within a device, such as
 A virtual chassis represents a set of devices which share a single control plane: a stack of switches which are managed as a single device, for example. Each device in the virtual chassis is assigned a position and (optionally) a priority. Exactly one device is designated the virtual chassis master: This device will typically be assigned a name, secrets, services, and other attributes related to its management.
 
 It's important to recognize the distinction between a virtual chassis and a chassis-based device. For instance, a virtual chassis is not used to model a chassis switch with removable line cards such as the Juniper EX9208, as its line cards are _not_ physically separate devices capable of operating independently.
+
+---
+
+# Cables
+
+A cable represents a physical connection between two termination points, such as between a console port and a patch panel port, or between two network interfaces. Cables can be traced through pass-through ports to form a complete path between two endpoints. In the example below, three individual cables comprise a path between the two connected endpoints.
+
+```
+|<------------------------------------------ Cable Path ------------------------------------------->|
+
+  Device A                   Patch Panel A                 Patch Panel B                  Device B
++-----------+               +-------------+               +-------------+               +-----------+
+| Interface | --- Cable --- | Front Port  |               | Front Port  | --- Cable --- | Interface |
++-----------+               +-------------+               +-------------+               +-----------+
+                            +-------------+               +-------------+
+                            |  Rear Port  | --- Cable --- |  Rear Port  |
+                            +-------------+               +-------------+
+```
+
+All connections between device components in NetBox are represented using cables. However, defining the actual cable plant is optional: Components can be be directly connected using cables with no type or other attributes assigned.
+
+Cables are also used to associated ports and interfaces with circuit terminations. To do this, first create the circuit termination, then navigate the desired component and connect a cable between the two.

docs/installation/upgrading.md

@@ -64,13 +64,6 @@ Once the new code is in place, run the upgrade script (which may need to be run
 # ./upgrade.sh
 ```
 
-!!! warning
-    The upgrade script will prefer Python3 and pip3 if both executables are available. To force it to use Python2 and pip, use the `-2` argument as below. Note that Python 2 will no longer be supported in NetBox v2.5.
-
-```no-highlight
-# ./upgrade.sh -2
-```
-
 This script:
 
 * Installs or upgrades any new required Python packages

netbox/circuits/api/nested_serializers.py

@@ -0,0 +1,52 @@
+from rest_framework import serializers
+
+from circuits.models import Circuit, CircuitTermination, CircuitType, Provider
+from utilities.api import WritableNestedSerializer
+
+__all__ = [
+    'NestedCircuitSerializer',
+    'NestedCircuitTerminationSerializer',
+    'NestedCircuitTypeSerializer',
+    'NestedProviderSerializer',
+]
+
+
+#
+# Providers
+#
+
+class NestedProviderSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:provider-detail')
+
+    class Meta:
+        model = Provider
+        fields = ['id', 'url', 'name', 'slug']
+
+
+#
+# Circuits
+#
+
+class NestedCircuitTypeSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuittype-detail')
+
+    class Meta:
+        model = CircuitType
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedCircuitSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuit-detail')
+
+    class Meta:
+        model = Circuit
+        fields = ['id', 'url', 'cid']
+
+
+class NestedCircuitTerminationSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuittermination-detail')
+    circuit = NestedCircuitSerializer()
+
+    class Meta:
+        model = CircuitTermination
+        fields = ['id', 'url', 'circuit', 'term_side']

netbox/circuits/api/serializers.py

@@ -1,14 +1,13 @@
-from __future__ import unicode_literals
-
-from rest_framework import serializers
 from taggit_serializer.serializers import TaggitSerializer, TagListSerializerField
 
 from circuits.constants import CIRCUIT_STATUS_CHOICES
-from circuits.models import Circuit, CircuitTermination, CircuitType, Provider
-from dcim.api.serializers import NestedInterfaceSerializer, NestedSiteSerializer
+from circuits.models import Provider, Circuit, CircuitTermination, CircuitType
+from dcim.api.nested_serializers import NestedCableSerializer, NestedSiteSerializer
+from dcim.api.serializers import ConnectedEndpointSerializer
 from extras.api.customfields import CustomFieldModelSerializer
-from tenancy.api.serializers import NestedTenantSerializer
-from utilities.api import ChoiceField, ValidatedModelSerializer, WritableNestedSerializer
+from tenancy.api.nested_serializers import NestedTenantSerializer
+from utilities.api import ChoiceField, ValidatedModelSerializer
+from .nested_serializers import *
 
 
 #
@@ -26,16 +25,8 @@ class ProviderSerializer(TaggitSerializer, CustomFieldModelSerializer):
         ]
 
 
-class NestedProviderSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:provider-detail')
-
-    class Meta:
-        model = Provider
-        fields = ['id', 'url', 'name', 'slug']
-
-
 #
-# Circuit types
+# Circuits
 #
 
 class CircuitTypeSerializer(ValidatedModelSerializer):
@@ -45,18 +36,6 @@ class CircuitTypeSerializer(ValidatedModelSerializer):
         fields = ['id', 'name', 'slug']
 
 
-class NestedCircuitTypeSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuittype-detail')
-
-    class Meta:
-        model = CircuitType
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Circuits
-#
-
 class CircuitSerializer(TaggitSerializer, CustomFieldModelSerializer):
     provider = NestedProviderSerializer()
     status = ChoiceField(choices=CIRCUIT_STATUS_CHOICES, required=False)
@@ -72,25 +51,14 @@ class CircuitSerializer(TaggitSerializer, CustomFieldModelSerializer):
         ]
 
 
-class NestedCircuitSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuit-detail')
-
-    class Meta:
-        model = Circuit
-        fields = ['id', 'url', 'cid']
-
-
-#
-# Circuit Terminations
-#
-
-class CircuitTerminationSerializer(ValidatedModelSerializer):
+class CircuitTerminationSerializer(ConnectedEndpointSerializer):
     circuit = NestedCircuitSerializer()
     site = NestedSiteSerializer()
-    interface = NestedInterfaceSerializer(required=False, allow_null=True)
+    cable = NestedCableSerializer(read_only=True)
 
     class Meta:
         model = CircuitTermination
         fields = [
-            'id', 'circuit', 'term_side', 'site', 'interface', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info',
+            'id', 'circuit', 'term_side', 'site', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info',
+            'description', 'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable',
         ]

netbox/circuits/api/urls.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from rest_framework import routers
 
 from . import views
@@ -17,7 +15,7 @@ router = routers.DefaultRouter()
 router.APIRootView = CircuitsRootView
 
 # Field choices
-router.register(r'_choices', views.CircuitsFieldChoicesViewSet, base_name='field-choice')
+router.register(r'_choices', views.CircuitsFieldChoicesViewSet, basename='field-choice')
 
 # Providers
 router.register(r'providers', views.ProviderViewSet)

netbox/circuits/api/views.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.shortcuts import get_object_or_404
 from rest_framework.decorators import action
 from rest_framework.response import Response
@@ -31,7 +29,7 @@ class CircuitsFieldChoicesViewSet(FieldChoicesViewSet):
 class ProviderViewSet(CustomFieldModelViewSet):
     queryset = Provider.objects.prefetch_related('tags')
     serializer_class = serializers.ProviderSerializer
-    filter_class = filters.ProviderFilter
+    filterset_class = filters.ProviderFilter
 
     @action(detail=True)
     def graphs(self, request, pk=None):
@@ -51,7 +49,7 @@ class ProviderViewSet(CustomFieldModelViewSet):
 class CircuitTypeViewSet(ModelViewSet):
     queryset = CircuitType.objects.all()
     serializer_class = serializers.CircuitTypeSerializer
-    filter_class = filters.CircuitTypeFilter
+    filterset_class = filters.CircuitTypeFilter
 
 
 #
@@ -61,7 +59,7 @@ class CircuitTypeViewSet(ModelViewSet):
 class CircuitViewSet(CustomFieldModelViewSet):
     queryset = Circuit.objects.select_related('type', 'tenant', 'provider').prefetch_related('tags')
     serializer_class = serializers.CircuitSerializer
-    filter_class = filters.CircuitFilter
+    filterset_class = filters.CircuitFilter
 
 
 #
@@ -69,6 +67,8 @@ class CircuitViewSet(CustomFieldModelViewSet):
 #
 
 class CircuitTerminationViewSet(ModelViewSet):
-    queryset = CircuitTermination.objects.select_related('circuit', 'site', 'interface__device')
+    queryset = CircuitTermination.objects.select_related(
+        'circuit', 'site', 'connected_endpoint__device', 'cable'
+    )
     serializer_class = serializers.CircuitTerminationSerializer
-    filter_class = filters.CircuitTerminationFilter
+    filterset_class = filters.CircuitTerminationFilter

netbox/circuits/apps.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.apps import AppConfig
 
 

netbox/circuits/constants.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 
 # Circuit statuses
 CIRCUIT_STATUS_DEPROVISIONING = 0

netbox/circuits/filters.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import django_filters
 from django.db.models import Q
 
@@ -12,18 +10,21 @@ from .models import Provider, Circuit, CircuitTermination, CircuitType
 
 
 class ProviderFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
     )
     site_id = django_filters.ModelMultipleChoiceFilter(
-        name='circuits__terminations__site',
+        field_name='circuits__terminations__site',
         queryset=Site.objects.all(),
         label='Site',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='circuits__terminations__site__slug',
+        field_name='circuits__terminations__site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
@@ -54,7 +55,10 @@ class CircuitTypeFilter(django_filters.FilterSet):
 
 
 class CircuitFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
@@ -64,7 +68,7 @@ class CircuitFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Provider (ID)',
     )
     provider = django_filters.ModelMultipleChoiceFilter(
-        name='provider__slug',
+        field_name='provider__slug',
         queryset=Provider.objects.all(),
         to_field_name='slug',
         label='Provider (slug)',
@@ -74,7 +78,7 @@ class CircuitFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Circuit type (ID)',
     )
     type = django_filters.ModelMultipleChoiceFilter(
-        name='type__slug',
+        field_name='type__slug',
         queryset=CircuitType.objects.all(),
         to_field_name='slug',
         label='Circuit type (slug)',
@@ -88,18 +92,18 @@ class CircuitFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='tenant__slug',
+        field_name='tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
     )
     site_id = django_filters.ModelMultipleChoiceFilter(
-        name='terminations__site',
+        field_name='terminations__site',
         queryset=Site.objects.all(),
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='terminations__site__slug',
+        field_name='terminations__site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
@@ -117,6 +121,7 @@ class CircuitFilter(CustomFieldFilterSet, django_filters.FilterSet):
             Q(cid__icontains=value) |
             Q(terminations__xconnect_id__icontains=value) |
             Q(terminations__pp_info__icontains=value) |
+            Q(terminations__description__icontains=value) |
             Q(description__icontains=value) |
             Q(comments__icontains=value)
         ).distinct()
@@ -136,7 +141,7 @@ class CircuitTerminationFilter(django_filters.FilterSet):
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='site__slug',
+        field_name='site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
@@ -152,5 +157,6 @@ class CircuitTerminationFilter(django_filters.FilterSet):
         return queryset.filter(
             Q(circuit__cid__icontains=value) |
             Q(xconnect_id__icontains=value) |
-            Q(pp_info__icontains=value)
+            Q(pp_info__icontains=value) |
+            Q(description__icontains=value)
         ).distinct()

netbox/circuits/forms.py

@@ -1,16 +1,14 @@
-from __future__ import unicode_literals
-
 from django import forms
 from django.db.models import Count
 from taggit.forms import TagField
 
-from dcim.models import Site, Device, Interface, Rack
+from dcim.models import Site
 from extras.forms import AddRemoveTagsForm, CustomFieldForm, CustomFieldBulkEditForm, CustomFieldFilterForm
 from tenancy.forms import TenancyForm
 from tenancy.models import Tenant
 from utilities.forms import (
-    AnnotatedMultipleChoiceField, APISelect, add_blank_choice, BootstrapMixin, ChainedFieldsMixin,
-    ChainedModelChoiceField, CommentField, CSVChoiceField, FilterChoiceField, SmallTextarea, SlugField,
+    AnnotatedMultipleChoiceField, add_blank_choice, BootstrapMixin, CommentField, CSVChoiceField, FilterChoiceField,
+    SmallTextarea, SlugField,
 )
 from .constants import CIRCUIT_STATUS_CHOICES
 from .models import Circuit, CircuitTermination, CircuitType, Provider
@@ -23,14 +21,22 @@ from .models import Circuit, CircuitTermination, CircuitType, Provider
 class ProviderForm(BootstrapMixin, CustomFieldForm):
     slug = SlugField()
     comments = CommentField()
-    tags = TagField(required=False)
+    tags = TagField(
+        required=False
+    )
 
     class Meta:
         model = Provider
-        fields = ['name', 'slug', 'asn', 'account', 'portal_url', 'noc_contact', 'admin_contact', 'comments', 'tags']
+        fields = [
+            'name', 'slug', 'asn', 'account', 'portal_url', 'noc_contact', 'admin_contact', 'comments', 'tags',
+        ]
         widgets = {
-            'noc_contact': SmallTextarea(attrs={'rows': 5}),
-            'admin_contact': SmallTextarea(attrs={'rows': 5}),
+            'noc_contact': SmallTextarea(
+                attrs={'rows': 5}
+            ),
+            'admin_contact': SmallTextarea(
+                attrs={'rows': 5}
+            ),
         }
         help_texts = {
             'name': "Full name of the provider",
@@ -56,23 +62,57 @@ class ProviderCSVForm(forms.ModelForm):
 
 
 class ProviderBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditForm):
-    pk = forms.ModelMultipleChoiceField(queryset=Provider.objects.all(), widget=forms.MultipleHiddenInput)
-    asn = forms.IntegerField(required=False, label='ASN')
-    account = forms.CharField(max_length=30, required=False, label='Account number')
-    portal_url = forms.URLField(required=False, label='Portal')
-    noc_contact = forms.CharField(required=False, widget=SmallTextarea, label='NOC contact')
-    admin_contact = forms.CharField(required=False, widget=SmallTextarea, label='Admin contact')
-    comments = CommentField(widget=SmallTextarea)
+    pk = forms.ModelMultipleChoiceField(
+        queryset=Provider.objects.all(),
+        widget=forms.MultipleHiddenInput
+    )
+    asn = forms.IntegerField(
+        required=False,
+        label='ASN'
+    )
+    account = forms.CharField(
+        max_length=30,
+        required=False,
+        label='Account number'
+    )
+    portal_url = forms.URLField(
+        required=False,
+        label='Portal'
+    )
+    noc_contact = forms.CharField(
+        required=False,
+        widget=SmallTextarea,
+        label='NOC contact'
+    )
+    admin_contact = forms.CharField(
+        required=False,
+        widget=SmallTextarea,
+        label='Admin contact'
+    )
+    comments = CommentField(
+        widget=SmallTextarea()
+    )
 
     class Meta:
-        nullable_fields = ['asn', 'account', 'portal_url', 'noc_contact', 'admin_contact', 'comments']
+        nullable_fields = [
+            'asn', 'account', 'portal_url', 'noc_contact', 'admin_contact', 'comments',
+        ]
 
 
 class ProviderFilterForm(BootstrapMixin, CustomFieldFilterForm):
     model = Provider
-    q = forms.CharField(required=False, label='Search')
-    site = FilterChoiceField(queryset=Site.objects.all(), to_field_name='slug')
-    asn = forms.IntegerField(required=False, label='ASN')
+    q = forms.CharField(
+        required=False,
+        label='Search'
+    )
+    site = FilterChoiceField(
+        queryset=Site.objects.all(),
+        to_field_name='slug'
+    )
+    asn = forms.IntegerField(
+        required=False,
+        label='ASN'
+    )
 
 
 #
@@ -84,7 +124,9 @@ class CircuitTypeForm(BootstrapMixin, forms.ModelForm):
 
     class Meta:
         model = CircuitType
-        fields = ['name', 'slug']
+        fields = [
+            'name', 'slug',
+        ]
 
 
 class CircuitTypeCSVForm(forms.ModelForm):
@@ -104,7 +146,9 @@ class CircuitTypeCSVForm(forms.ModelForm):
 
 class CircuitForm(BootstrapMixin, TenancyForm, CustomFieldForm):
     comments = CommentField()
-    tags = TagField(required=False)
+    tags = TagField(
+        required=False
+    )
 
     class Meta:
         model = Circuit
@@ -159,28 +203,61 @@ class CircuitCSVForm(forms.ModelForm):
 
 
 class CircuitBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditForm):
-    pk = forms.ModelMultipleChoiceField(queryset=Circuit.objects.all(), widget=forms.MultipleHiddenInput)
-    type = forms.ModelChoiceField(queryset=CircuitType.objects.all(), required=False)
-    provider = forms.ModelChoiceField(queryset=Provider.objects.all(), required=False)
-    status = forms.ChoiceField(choices=add_blank_choice(CIRCUIT_STATUS_CHOICES), required=False, initial='')
-    tenant = forms.ModelChoiceField(queryset=Tenant.objects.all(), required=False)
-    commit_rate = forms.IntegerField(required=False, label='Commit rate (Kbps)')
-    description = forms.CharField(max_length=100, required=False)
-    comments = CommentField(widget=SmallTextarea)
+    pk = forms.ModelMultipleChoiceField(
+        queryset=Circuit.objects.all(),
+        widget=forms.MultipleHiddenInput
+    )
+    type = forms.ModelChoiceField(
+        queryset=CircuitType.objects.all(),
+        required=False
+    )
+    provider = forms.ModelChoiceField(
+        queryset=Provider.objects.all(),
+        required=False
+    )
+    status = forms.ChoiceField(
+        choices=add_blank_choice(CIRCUIT_STATUS_CHOICES),
+        required=False,
+        initial=''
+    )
+    tenant = forms.ModelChoiceField(
+        queryset=Tenant.objects.all(),
+        required=False
+    )
+    commit_rate = forms.IntegerField(
+        required=False,
+        label='Commit rate (Kbps)'
+    )
+    description = forms.CharField(
+        max_length=100,
+        required=False
+    )
+    comments = CommentField(
+        widget=SmallTextarea
+    )
 
     class Meta:
-        nullable_fields = ['tenant', 'commit_rate', 'description', 'comments']
+        nullable_fields = [
+            'tenant', 'commit_rate', 'description', 'comments',
+        ]
 
 
 class CircuitFilterForm(BootstrapMixin, CustomFieldFilterForm):
     model = Circuit
-    q = forms.CharField(required=False, label='Search')
+    q = forms.CharField(
+        required=False,
+        label='Search'
+    )
     type = FilterChoiceField(
-        queryset=CircuitType.objects.annotate(filter_count=Count('circuits')),
+        queryset=CircuitType.objects.annotate(
+            filter_count=Count('circuits')
+        ),
         to_field_name='slug'
     )
     provider = FilterChoiceField(
-        queryset=Provider.objects.annotate(filter_count=Count('circuits')),
+        queryset=Provider.objects.annotate(
+            filter_count=Count('circuits')
+        ),
         to_field_name='slug'
     )
     status = AnnotatedMultipleChoiceField(
@@ -190,74 +267,35 @@ class CircuitFilterForm(BootstrapMixin, CustomFieldFilterForm):
         required=False
     )
     tenant = FilterChoiceField(
-        queryset=Tenant.objects.annotate(filter_count=Count('circuits')),
+        queryset=Tenant.objects.annotate(
+            filter_count=Count('circuits')
+        ),
         to_field_name='slug',
         null_label='-- None --'
     )
     site = FilterChoiceField(
-        queryset=Site.objects.annotate(filter_count=Count('circuit_terminations')),
+        queryset=Site.objects.annotate(
+            filter_count=Count('circuit_terminations')
+        ),
         to_field_name='slug'
     )
-    commit_rate = forms.IntegerField(required=False, min_value=0, label='Commit rate (Kbps)')
+    commit_rate = forms.IntegerField(
+        required=False,
+        min_value=0,
+        label='Commit rate (Kbps)'
+    )
 
 
 #
 # Circuit terminations
 #
 
-class CircuitTerminationForm(BootstrapMixin, ChainedFieldsMixin, forms.ModelForm):
-    site = forms.ModelChoiceField(
-        queryset=Site.objects.all(),
-        widget=forms.Select(
-            attrs={'filter-for': 'rack'}
-        )
-    )
-    rack = ChainedModelChoiceField(
-        queryset=Rack.objects.all(),
-        chains=(
-            ('site', 'site'),
-        ),
-        required=False,
-        label='Rack',
-        widget=APISelect(
-            api_url='/api/dcim/racks/?site_id={{site}}',
-            attrs={'filter-for': 'device', 'nullable': 'true'}
-        )
-    )
-    device = ChainedModelChoiceField(
-        queryset=Device.objects.all(),
-        chains=(
-            ('site', 'site'),
-            ('rack', 'rack'),
-        ),
-        required=False,
-        label='Device',
-        widget=APISelect(
-            api_url='/api/dcim/devices/?site_id={{site}}&rack_id={{rack}}',
-            display_field='display_name',
-            attrs={'filter-for': 'interface'}
-        )
-    )
-    interface = ChainedModelChoiceField(
-        queryset=Interface.objects.connectable().select_related(
-            'circuit_termination', 'connected_as_a', 'connected_as_b'
-        ),
-        chains=(
-            ('device', 'device'),
-        ),
-        required=False,
-        label='Interface',
-        widget=APISelect(
-            api_url='/api/dcim/interfaces/?device_id={{device}}&type=physical',
-            disabled_indicator='is_connected'
-        )
-    )
+class CircuitTerminationForm(BootstrapMixin, forms.ModelForm):
 
     class Meta:
         model = CircuitTermination
         fields = [
-            'term_side', 'site', 'rack', 'device', 'interface', 'port_speed', 'upstream_speed', 'xconnect_id',
-            'pp_info',
+            'term_side', 'site', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info', 'description',
         ]
         help_texts = {
             'port_speed': "Physical circuit speed",
@@ -267,25 +305,3 @@ class CircuitTerminationForm(BootstrapMixin, ChainedFieldsMixin, forms.ModelForm
         widgets = {
             'term_side': forms.HiddenInput(),
         }
-
-    def __init__(self, *args, **kwargs):
-
-        # Initialize helper selectors
-        instance = kwargs.get('instance')
-        if instance and instance.interface is not None:
-            initial = kwargs.get('initial', {}).copy()
-            initial['rack'] = instance.interface.device.rack
-            initial['device'] = instance.interface.device
-            kwargs['initial'] = initial
-
-        super(CircuitTerminationForm, self).__init__(*args, **kwargs)
-
-        # Mark connected interfaces as disabled
-        self.fields['interface'].choices = []
-        for iface in self.fields['interface'].queryset:
-            self.fields['interface'].choices.append(
-                (iface.id, {
-                    'label': iface.name,
-                    'disabled': iface.is_connected and iface.pk != self.initial.get('interface'),
-                })
-            )

netbox/circuits/migrations/0001_initial.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-06-22 18:21
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/circuits/migrations/0001_initial_squashed_0010_circuit_status.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-31 02:25
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.db import migrations, models
 import django.db.models.deletion

netbox/circuits/migrations/0002_auto_20160622_1821.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-06-22 18:21
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/circuits/migrations/0003_provider_32bit_asn_support.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-13 19:24
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.db import migrations
 

netbox/circuits/migrations/0004_circuit_add_tenant.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-07-26 21:59
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/circuits/migrations/0005_circuit_add_upstream_speed.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-08 20:24
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/circuits/migrations/0006_terminations.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-12-13 16:30
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/circuits/migrations/0007_circuit_add_description.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-01-17 20:08
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/circuits/migrations/0008_circuittermination_interface_protect_on_delete.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11 on 2017-04-19 17:17
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/circuits/migrations/0009_unicode_literals.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11 on 2017-05-24 15:34
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.db import migrations, models
 

netbox/circuits/migrations/0010_circuit_status.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.9 on 2018-02-06 18:48
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/circuits/migrations/0011_tags.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.12 on 2018-05-22 19:04
-from __future__ import unicode_literals
-
 from django.db import migrations
 import taggit.managers
 

netbox/circuits/migrations/0012_change_logging.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.12 on 2018-06-13 17:14
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/circuits/migrations/0013_cables.py

@@ -0,0 +1,89 @@
+import sys
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+from dcim.constants import CONNECTION_STATUS_CONNECTED
+
+
+def circuit_terminations_to_cables(apps, schema_editor):
+    """
+    Copy all existing CircuitTermination Interface associations as Cables
+    """
+    ContentType = apps.get_model('contenttypes', 'ContentType')
+    CircuitTermination = apps.get_model('circuits', 'CircuitTermination')
+    Interface = apps.get_model('dcim', 'Interface')
+    Cable = apps.get_model('dcim', 'Cable')
+
+    # Load content types
+    circuittermination_type = ContentType.objects.get_for_model(CircuitTermination)
+    interface_type = ContentType.objects.get_for_model(Interface)
+
+    # Create a new Cable instance from each console connection
+    if 'test' not in sys.argv:
+        print("\n    Adding circuit terminations... ", end='', flush=True)
+    for circuittermination in CircuitTermination.objects.filter(interface__isnull=False):
+
+        # Create the new Cable
+        cable = Cable.objects.create(
+            termination_a_type=circuittermination_type,
+            termination_a_id=circuittermination.id,
+            termination_b_type=interface_type,
+            termination_b_id=circuittermination.interface_id,
+            status=CONNECTION_STATUS_CONNECTED
+        )
+
+        # Cache the Cable on its two termination points
+        CircuitTermination.objects.filter(pk=circuittermination.pk).update(
+            cable=cable,
+            connected_endpoint=circuittermination.interface,
+            connection_status=CONNECTION_STATUS_CONNECTED
+        )
+        # Cache the connected Cable on the Interface
+        Interface.objects.filter(pk=circuittermination.interface_id).update(
+            cable=cable,
+            _connected_circuittermination=circuittermination,
+            connection_status=CONNECTION_STATUS_CONNECTED
+        )
+
+    cable_count = Cable.objects.filter(termination_a_type=circuittermination_type).count()
+    if 'test' not in sys.argv:
+        print("{} cables created".format(cable_count))
+
+
+class Migration(migrations.Migration):
+    atomic = False
+
+    dependencies = [
+        ('circuits', '0012_change_logging'),
+        ('dcim', '0066_cables'),
+    ]
+
+    operations = [
+
+        # Add new CircuitTermination fields
+        migrations.AddField(
+            model_name='circuittermination',
+            name='connected_endpoint',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='dcim.Interface'),
+        ),
+        migrations.AddField(
+            model_name='circuittermination',
+            name='connection_status',
+            field=models.NullBooleanField(),
+        ),
+        migrations.AddField(
+            model_name='circuittermination',
+            name='cable',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='dcim.Cable'),
+        ),
+
+        # Copy CircuitTermination connections to Interfaces as Cables
+        migrations.RunPython(circuit_terminations_to_cables),
+
+        # Remove interface field from CircuitTermination
+        migrations.RemoveField(
+            model_name='circuittermination',
+            name='interface',
+        ),
+    ]

netbox/circuits/migrations/0014_circuittermination_description.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1.3 on 2018-11-05 18:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('circuits', '0013_cables'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='circuittermination',
+            name='description',
+            field=models.CharField(blank=True, max_length=100),
+        ),
+    ]

netbox/circuits/models.py

@@ -1,20 +1,17 @@
-from __future__ import unicode_literals
-
 from django.contrib.contenttypes.fields import GenericRelation
 from django.db import models
 from django.urls import reverse
-from django.utils.encoding import python_2_unicode_compatible
 from taggit.managers import TaggableManager
 
-from dcim.constants import STATUS_CLASSES
+from dcim.constants import CONNECTION_STATUS_CHOICES, CONNECTION_STATUS_CONNECTED, STATUS_CLASSES
 from dcim.fields import ASNField
+from dcim.models import CableTermination
 from extras.models import CustomFieldModel, ObjectChange
 from utilities.models import ChangeLoggedModel
 from utilities.utils import serialize_object
 from .constants import CIRCUIT_STATUS_ACTIVE, CIRCUIT_STATUS_CHOICES, TERM_SIDE_CHOICES
 
 
-@python_2_unicode_compatible
 class Provider(ChangeLoggedModel, CustomFieldModel):
     """
     Each Circuit belongs to a Provider. This is usually a telecommunications company or similar organization. This model
@@ -84,7 +81,6 @@ class Provider(ChangeLoggedModel, CustomFieldModel):
         )
 
 
-@python_2_unicode_compatible
 class CircuitType(ChangeLoggedModel):
     """
     Circuits can be organized by their functional role. For example, a user might wish to define CircuitTypes named
@@ -116,12 +112,11 @@ class CircuitType(ChangeLoggedModel):
         )
 
 
-@python_2_unicode_compatible
 class Circuit(ChangeLoggedModel, CustomFieldModel):
     """
     A communications circuit connects two points. Each Circuit belongs to a Provider; Providers may have multiple
-    circuits. Each circuit is also assigned a CircuitType and a Site. A Circuit may be terminated to a specific device
-    interface, but this is not required. Circuit port speed and commit rate are measured in Kbps.
+    circuits. Each circuit is also assigned a CircuitType and a Site.  Circuit port speed and commit rate are measured
+    in Kbps.
     """
     cid = models.CharField(
         max_length=50,
@@ -217,8 +212,7 @@ class Circuit(ChangeLoggedModel, CustomFieldModel):
         return self._get_termination('Z')
 
 
-@python_2_unicode_compatible
-class CircuitTermination(models.Model):
+class CircuitTermination(CableTermination):
     circuit = models.ForeignKey(
         to='circuits.Circuit',
         on_delete=models.CASCADE,
@@ -234,13 +228,17 @@ class CircuitTermination(models.Model):
         on_delete=models.PROTECT,
         related_name='circuit_terminations'
     )
-    interface = models.OneToOneField(
+    connected_endpoint = models.OneToOneField(
         to='dcim.Interface',
-        on_delete=models.PROTECT,
-        related_name='circuit_termination',
+        on_delete=models.SET_NULL,
+        related_name='+',
         blank=True,
         null=True
     )
+    connection_status = models.NullBooleanField(
+        choices=CONNECTION_STATUS_CHOICES,
+        blank=True
+    )
     port_speed = models.PositiveIntegerField(
         verbose_name='Port speed (Kbps)'
     )
@@ -260,13 +258,17 @@ class CircuitTermination(models.Model):
         blank=True,
         verbose_name='Patch panel/port(s)'
     )
+    description = models.CharField(
+        max_length=100,
+        blank=True
+    )
 
     class Meta:
         ordering = ['circuit', 'term_side']
         unique_together = ['circuit', 'term_side']
 
     def __str__(self):
-        return '{} (Side {})'.format(self.circuit, self.get_term_side_display())
+        return 'Side {}'.format(self.get_term_side_display())
 
     def log_change(self, user, request_id, action):
         """

netbox/circuits/signals.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.db.models.signals import post_delete, post_save
 from django.dispatch import receiver
 from django.utils import timezone

netbox/circuits/tables.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import django_tables2 as tables
 from django.utils.safestring import mark_safe
 from django_tables2.utils import Accessor
@@ -25,12 +23,6 @@ STATUS_LABEL = """
 class CircuitTerminationColumn(tables.Column):
 
     def render(self, value):
-        if value.interface:
-            return mark_safe('<a href="{}" title="{}">{}</a>'.format(
-                value.interface.device.get_absolute_url(),
-                value.site,
-                value.interface.device
-            ))
         return mark_safe('<a href="{}">{}</a>'.format(
             value.site.get_absolute_url(),
             value.site

netbox/circuits/tests/test_api.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.urls import reverse
 from rest_framework import status
 
@@ -15,7 +13,7 @@ class ProviderTest(APITestCase):
 
     def setUp(self):
 
-        super(ProviderTest, self).setUp()
+        super().setUp()
 
         self.provider1 = Provider.objects.create(name='Test Provider 1', slug='test-provider-1')
         self.provider2 = Provider.objects.create(name='Test Provider 2', slug='test-provider-2')
@@ -137,7 +135,7 @@ class CircuitTypeTest(APITestCase):
 
     def setUp(self):
 
-        super(CircuitTypeTest, self).setUp()
+        super().setUp()
 
         self.circuittype1 = CircuitType.objects.create(name='Test Circuit Type 1', slug='test-circuit-type-1')
         self.circuittype2 = CircuitType.objects.create(name='Test Circuit Type 2', slug='test-circuit-type-2')
@@ -212,7 +210,7 @@ class CircuitTest(APITestCase):
 
     def setUp(self):
 
-        super(CircuitTest, self).setUp()
+        super().setUp()
 
         self.provider1 = Provider.objects.create(name='Test Provider 1', slug='test-provider-1')
         self.provider2 = Provider.objects.create(name='Test Provider 2', slug='test-provider-2')
@@ -328,46 +326,26 @@ class CircuitTerminationTest(APITestCase):
 
     def setUp(self):
 
-        super(CircuitTerminationTest, self).setUp()
+        super().setUp()
 
         self.site1 = Site.objects.create(name='Test Site 1', slug='test-site-1')
         self.site2 = Site.objects.create(name='Test Site 2', slug='test-site-2')
-        manufacturer = Manufacturer.objects.create(name='Test Manufacturer 1', slug='test-manufacturer-1')
-        devicetype = DeviceType.objects.create(
-            manufacturer=manufacturer, model='Test Device Type 1', slug='test-device-type-1', is_network_device=True
-        )
-        devicerole = DeviceRole.objects.create(
-            name='Test Device Role 1', slug='test-device-role-1', color='ff0000'
-        )
-        device1 = Device.objects.create(
-            device_type=devicetype, device_role=devicerole, name='Test Device 1', site=self.site1
-        )
-        device2 = Device.objects.create(
-            device_type=devicetype, device_role=devicerole, name='Test Device 2', site=self.site2
-        )
-        self.interface1 = Interface.objects.create(device=device1, name='Test Interface 1')
-        self.interface2 = Interface.objects.create(device=device2, name='Test Interface 2')
-        self.interface3 = Interface.objects.create(device=device1, name='Test Interface 3')
-        self.interface4 = Interface.objects.create(device=device2, name='Test Interface 4')
-        self.interface5 = Interface.objects.create(device=device1, name='Test Interface 5')
-        self.interface6 = Interface.objects.create(device=device2, name='Test Interface 6')
-
         provider = Provider.objects.create(name='Test Provider', slug='test-provider')
         circuittype = CircuitType.objects.create(name='Test Circuit Type', slug='test-circuit-type')
         self.circuit1 = Circuit.objects.create(cid='TEST0001', provider=provider, type=circuittype)
         self.circuit2 = Circuit.objects.create(cid='TEST0002', provider=provider, type=circuittype)
         self.circuit3 = Circuit.objects.create(cid='TEST0003', provider=provider, type=circuittype)
         self.circuittermination1 = CircuitTermination.objects.create(
-            circuit=self.circuit1, term_side=TERM_SIDE_A, site=self.site1, interface=self.interface1, port_speed=1000000
+            circuit=self.circuit1, term_side=TERM_SIDE_A, site=self.site1, port_speed=1000000
         )
         self.circuittermination2 = CircuitTermination.objects.create(
-            circuit=self.circuit1, term_side=TERM_SIDE_Z, site=self.site2, interface=self.interface2, port_speed=1000000
+            circuit=self.circuit1, term_side=TERM_SIDE_Z, site=self.site2, port_speed=1000000
         )
         self.circuittermination3 = CircuitTermination.objects.create(
-            circuit=self.circuit2, term_side=TERM_SIDE_A, site=self.site1, interface=self.interface3, port_speed=1000000
+            circuit=self.circuit2, term_side=TERM_SIDE_A, site=self.site1, port_speed=1000000
         )
         self.circuittermination4 = CircuitTermination.objects.create(
-            circuit=self.circuit2, term_side=TERM_SIDE_Z, site=self.site2, interface=self.interface4, port_speed=1000000
+            circuit=self.circuit2, term_side=TERM_SIDE_Z, site=self.site2, port_speed=1000000
         )
 
     def test_get_circuittermination(self):
@@ -390,7 +368,6 @@ class CircuitTerminationTest(APITestCase):
             'circuit': self.circuit3.pk,
             'term_side': TERM_SIDE_A,
             'site': self.site1.pk,
-            'interface': self.interface5.pk,
             'port_speed': 1000000,
         }
 
@@ -403,20 +380,18 @@ class CircuitTerminationTest(APITestCase):
         self.assertEqual(circuittermination4.circuit_id, data['circuit'])
         self.assertEqual(circuittermination4.term_side, data['term_side'])
         self.assertEqual(circuittermination4.site_id, data['site'])
-        self.assertEqual(circuittermination4.interface_id, data['interface'])
         self.assertEqual(circuittermination4.port_speed, data['port_speed'])
 
     def test_update_circuittermination(self):
 
         circuittermination5 = CircuitTermination.objects.create(
-            circuit=self.circuit3, term_side=TERM_SIDE_A, site=self.site1, interface=self.interface5, port_speed=1000000
+            circuit=self.circuit3, term_side=TERM_SIDE_A, site=self.site1, port_speed=1000000
         )
 
         data = {
             'circuit': self.circuit3.pk,
             'term_side': TERM_SIDE_Z,
             'site': self.site2.pk,
-            'interface': self.interface6.pk,
             'port_speed': 1000000,
         }
 
@@ -428,7 +403,6 @@ class CircuitTerminationTest(APITestCase):
         circuittermination1 = CircuitTermination.objects.get(pk=response.data['id'])
         self.assertEqual(circuittermination1.term_side, data['term_side'])
         self.assertEqual(circuittermination1.site_id, data['site'])
-        self.assertEqual(circuittermination1.interface_id, data['interface'])
         self.assertEqual(circuittermination1.port_speed, data['port_speed'])
 
     def test_delete_circuittermination(self):

netbox/circuits/urls.py

@@ -1,10 +1,9 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 
+from dcim.views import CableCreateView, CableTraceView
 from extras.views import ObjectChangeLogView
 from . import views
-from .models import Circuit, CircuitType, Provider
+from .models import Circuit, CircuitTermination, CircuitType, Provider
 
 app_name = 'circuits'
 urlpatterns = [
@@ -44,5 +43,7 @@ urlpatterns = [
     url(r'^circuits/(?P<circuit>\d+)/terminations/add/$', views.CircuitTerminationCreateView.as_view(), name='circuittermination_add'),
     url(r'^circuit-terminations/(?P<pk>\d+)/edit/$', views.CircuitTerminationEditView.as_view(), name='circuittermination_edit'),
     url(r'^circuit-terminations/(?P<pk>\d+)/delete/$', views.CircuitTerminationDeleteView.as_view(), name='circuittermination_delete'),
+    url(r'^circuit-terminations/(?P<termination_a_id>\d+)/connect/$', CableCreateView.as_view(), name='circuittermination_connect', kwargs={'termination_a_type': CircuitTermination}),
+    url(r'^circuit-terminations/(?P<pk>\d+)/trace/$', CableTraceView.as_view(), name='circuittermination_trace', kwargs={'model': CircuitTermination}),
 
 ]

netbox/circuits/views.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.contrib import messages
 from django.contrib.auth.decorators import permission_required
 from django.contrib.auth.mixins import PermissionRequiredMixin
@@ -134,7 +132,7 @@ class CircuitListView(ObjectListView):
     queryset = Circuit.objects.select_related(
         'provider', 'type', 'tenant'
     ).prefetch_related(
-        'terminations__site', 'terminations__interface__device'
+        'terminations__site'
     )
     filter = filters.CircuitFilter
     filter_form = forms.CircuitFilterForm
@@ -148,12 +146,12 @@ class CircuitView(View):
 
         circuit = get_object_or_404(Circuit.objects.select_related('provider', 'type', 'tenant__group'), pk=pk)
         termination_a = CircuitTermination.objects.select_related(
-            'site__region', 'interface__device'
+            'site__region', 'connected_endpoint__device'
         ).filter(
             circuit=circuit, term_side=TERM_SIDE_A
         ).first()
         termination_z = CircuitTermination.objects.select_related(
-            'site__region', 'interface__device'
+            'site__region', 'connected_endpoint__device'
         ).filter(
             circuit=circuit, term_side=TERM_SIDE_Z
         ).first()

netbox/dcim/api/exceptions.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from rest_framework.exceptions import APIException
 
 

netbox/dcim/api/nested_serializers.py

@@ -0,0 +1,249 @@
+from rest_framework import serializers
+
+from dcim.constants import CONNECTION_STATUS_CHOICES
+from dcim.models import (
+    Cable, ConsolePort, ConsoleServerPort, Device, DeviceBay, DeviceType, DeviceRole, FrontPort, FrontPortTemplate,
+    Interface, Manufacturer, Platform, PowerOutlet, PowerPort, Rack, RackGroup, RackRole, RearPort, RearPortTemplate,
+    Region, Site, VirtualChassis,
+)
+from utilities.api import ChoiceField, WritableNestedSerializer
+
+__all__ = [
+    'NestedCableSerializer',
+    'NestedConsolePortSerializer',
+    'NestedConsoleServerPortSerializer',
+    'NestedDeviceBaySerializer',
+    'NestedDeviceRoleSerializer',
+    'NestedDeviceSerializer',
+    'NestedDeviceTypeSerializer',
+    'NestedFrontPortSerializer',
+    'NestedFrontPortTemplateSerializer',
+    'NestedInterfaceSerializer',
+    'NestedManufacturerSerializer',
+    'NestedPlatformSerializer',
+    'NestedPowerOutletSerializer',
+    'NestedPowerPortSerializer',
+    'NestedRackGroupSerializer',
+    'NestedRackRoleSerializer',
+    'NestedRackSerializer',
+    'NestedRearPortSerializer',
+    'NestedRearPortTemplateSerializer',
+    'NestedRegionSerializer',
+    'NestedSiteSerializer',
+    'NestedVirtualChassisSerializer',
+]
+
+
+#
+# Regions/sites
+#
+
+class NestedRegionSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:region-detail')
+
+    class Meta:
+        model = Region
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedSiteSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:site-detail')
+
+    class Meta:
+        model = Site
+        fields = ['id', 'url', 'name', 'slug']
+
+
+#
+# Racks
+#
+
+class NestedRackGroupSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rackgroup-detail')
+
+    class Meta:
+        model = RackGroup
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedRackRoleSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rackrole-detail')
+
+    class Meta:
+        model = RackRole
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedRackSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rack-detail')
+
+    class Meta:
+        model = Rack
+        fields = ['id', 'url', 'name', 'display_name']
+
+
+#
+# Device types
+#
+
+class NestedManufacturerSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:manufacturer-detail')
+
+    class Meta:
+        model = Manufacturer
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedDeviceTypeSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:devicetype-detail')
+    manufacturer = NestedManufacturerSerializer(read_only=True)
+
+    class Meta:
+        model = DeviceType
+        fields = ['id', 'url', 'manufacturer', 'model', 'slug']
+
+
+class NestedRearPortTemplateSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rearporttemplate-detail')
+
+    class Meta:
+        model = RearPortTemplate
+        fields = ['id', 'url', 'name']
+
+
+class NestedFrontPortTemplateSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:frontporttemplate-detail')
+
+    class Meta:
+        model = FrontPortTemplate
+        fields = ['id', 'url', 'name']
+
+
+#
+# Devices
+#
+
+class NestedDeviceRoleSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:devicerole-detail')
+
+    class Meta:
+        model = DeviceRole
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedPlatformSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:platform-detail')
+
+    class Meta:
+        model = Platform
+        fields = ['id', 'url', 'name', 'slug']
+
+
+class NestedDeviceSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:device-detail')
+
+    class Meta:
+        model = Device
+        fields = ['id', 'url', 'name', 'display_name']
+
+
+class NestedConsoleServerPortSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:consoleserverport-detail')
+    device = NestedDeviceSerializer(read_only=True)
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+
+    class Meta:
+        model = ConsoleServerPort
+        fields = ['id', 'url', 'device', 'name', 'cable', 'connection_status']
+
+
+class NestedConsolePortSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:consoleport-detail')
+    device = NestedDeviceSerializer(read_only=True)
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+
+    class Meta:
+        model = ConsolePort
+        fields = ['id', 'url', 'device', 'name', 'cable', 'connection_status']
+
+
+class NestedPowerOutletSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:poweroutlet-detail')
+    device = NestedDeviceSerializer(read_only=True)
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+
+    class Meta:
+        model = PowerOutlet
+        fields = ['id', 'url', 'device', 'name', 'cable', 'connection_status']
+
+
+class NestedPowerPortSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:powerport-detail')
+    device = NestedDeviceSerializer(read_only=True)
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+
+    class Meta:
+        model = PowerPort
+        fields = ['id', 'url', 'device', 'name', 'cable', 'connection_status']
+
+
+class NestedInterfaceSerializer(WritableNestedSerializer):
+    device = NestedDeviceSerializer(read_only=True)
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:interface-detail')
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+
+    class Meta:
+        model = Interface
+        fields = ['id', 'url', 'device', 'name', 'cable', 'connection_status']
+
+
+class NestedRearPortSerializer(WritableNestedSerializer):
+    device = NestedDeviceSerializer(read_only=True)
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rearport-detail')
+
+    class Meta:
+        model = RearPort
+        fields = ['id', 'url', 'device', 'name', 'cable']
+
+
+class NestedFrontPortSerializer(WritableNestedSerializer):
+    device = NestedDeviceSerializer(read_only=True)
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:frontport-detail')
+
+    class Meta:
+        model = FrontPort
+        fields = ['id', 'url', 'device', 'name', 'cable']
+
+
+class NestedDeviceBaySerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rearport-detail')
+    device = NestedDeviceSerializer(read_only=True)
+
+    class Meta:
+        model = DeviceBay
+        fields = ['id', 'url', 'device', 'name']
+
+
+#
+# Cables
+#
+
+class NestedCableSerializer(serializers.ModelSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:cable-detail')
+
+    class Meta:
+        model = Cable
+        fields = ['id', 'url', 'label']
+
+
+#
+# Virtual chassis
+#
+
+class NestedVirtualChassisSerializer(WritableNestedSerializer):
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:virtualchassis-detail')
+    master = NestedDeviceSerializer()
+
+    class Meta:
+        model = VirtualChassis
+        fields = ['id', 'url', 'master']

netbox/dcim/api/serializers.py

@@ -1,42 +1,57 @@
-from __future__ import unicode_literals
-
 from rest_framework import serializers
 from rest_framework.validators import UniqueTogetherValidator
 from taggit_serializer.serializers import TaggitSerializer, TagListSerializerField
 
-from circuits.models import Circuit, CircuitTermination
-from dcim.constants import (
-    CONNECTION_STATUS_CHOICES, DEVICE_STATUS_CHOICES, IFACE_FF_CHOICES, IFACE_MODE_CHOICES, IFACE_ORDERING_CHOICES,
-    RACK_FACE_CHOICES, RACK_TYPE_CHOICES, RACK_WIDTH_CHOICES, SITE_STATUS_CHOICES, SUBDEVICE_ROLE_CHOICES,
-)
+from dcim.constants import *
 from dcim.models import (
-    ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
-    DeviceBayTemplate, DeviceType, DeviceRole, Interface, InterfaceConnection, InterfaceTemplate, Manufacturer,
-    InventoryItem, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack, RackGroup,
-    RackReservation, RackRole, Region, Site, VirtualChassis,
+    Cable, ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
+    DeviceBayTemplate, DeviceType, DeviceRole, FrontPort, FrontPortTemplate, Interface, InterfaceTemplate,
+    Manufacturer, InventoryItem, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack,
+    RackGroup, RackReservation, RackRole, RearPort, RearPortTemplate, Region, Site, VirtualChassis,
 )
 from extras.api.customfields import CustomFieldModelSerializer
-from ipam.models import IPAddress, VLAN
-from tenancy.api.serializers import NestedTenantSerializer
-from users.api.serializers import NestedUserSerializer
+from ipam.api.nested_serializers import NestedIPAddressSerializer, NestedVLANSerializer
+from ipam.models import VLAN
+from tenancy.api.nested_serializers import NestedTenantSerializer
+from users.api.nested_serializers import NestedUserSerializer
 from utilities.api import (
-    ChoiceField, SerializedPKRelatedField, TimeZoneField, ValidatedModelSerializer,
-    WritableNestedSerializer,
+    ChoiceField, ContentTypeField, SerializedPKRelatedField, TimeZoneField, ValidatedModelSerializer,
+    WritableNestedSerializer, get_serializer_for_model,
 )
-from virtualization.models import Cluster
+from virtualization.api.nested_serializers import NestedClusterSerializer
+from .nested_serializers import *
 
 
-#
-# Regions
-#
+class ConnectedEndpointSerializer(ValidatedModelSerializer):
+    connected_endpoint_type = serializers.SerializerMethodField(read_only=True)
+    connected_endpoint = serializers.SerializerMethodField(read_only=True)
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
 
-class NestedRegionSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:region-detail')
+    def get_connected_endpoint_type(self, obj):
+        if hasattr(obj, 'connected_endpoint') and obj.connected_endpoint is not None:
+            return '{}.{}'.format(
+                obj.connected_endpoint._meta.app_label,
+                obj.connected_endpoint._meta.model_name
+            )
+        return None
 
-    class Meta:
-        model = Region
-        fields = ['id', 'url', 'name', 'slug']
+    def get_connected_endpoint(self, obj):
+        """
+        Return the appropriate serializer for the type of connected object.
+        """
+        if getattr(obj, 'connected_endpoint', None) is None:
+            return None
+
+        serializer = get_serializer_for_model(obj.connected_endpoint, prefix='Nested')
+        context = {'request': self.context['request']}
+        data = serializer(obj.connected_endpoint, context=context).data
 
+        return data
+
+
+#
+# Regions/sites
+#
 
 class RegionSerializer(serializers.ModelSerializer):
     parent = NestedRegionSerializer(required=False, allow_null=True)
@@ -46,10 +61,6 @@ class RegionSerializer(serializers.ModelSerializer):
         fields = ['id', 'name', 'slug', 'parent']
 
 
-#
-# Sites
-#
-
 class SiteSerializer(TaggitSerializer, CustomFieldModelSerializer):
     status = ChoiceField(choices=SITE_STATUS_CHOICES, required=False)
     region = NestedRegionSerializer(required=False, allow_null=True)
@@ -72,16 +83,8 @@ class SiteSerializer(TaggitSerializer, CustomFieldModelSerializer):
         ]
 
 
-class NestedSiteSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:site-detail')
-
-    class Meta:
-        model = Site
-        fields = ['id', 'url', 'name', 'slug']
-
-
 #
-# Rack groups
+# Racks
 #
 
 class RackGroupSerializer(ValidatedModelSerializer):
@@ -92,18 +95,6 @@ class RackGroupSerializer(ValidatedModelSerializer):
         fields = ['id', 'name', 'slug', 'site']
 
 
-class NestedRackGroupSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rackgroup-detail')
-
-    class Meta:
-        model = RackGroup
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Rack roles
-#
-
 class RackRoleSerializer(ValidatedModelSerializer):
 
     class Meta:
@@ -111,32 +102,23 @@ class RackRoleSerializer(ValidatedModelSerializer):
         fields = ['id', 'name', 'slug', 'color']
 
 
-class NestedRackRoleSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rackrole-detail')
-
-    class Meta:
-        model = RackRole
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Racks
-#
-
 class RackSerializer(TaggitSerializer, CustomFieldModelSerializer):
     site = NestedSiteSerializer()
     group = NestedRackGroupSerializer(required=False, allow_null=True, default=None)
     tenant = NestedTenantSerializer(required=False, allow_null=True)
+    status = ChoiceField(choices=RACK_STATUS_CHOICES, required=False)
     role = NestedRackRoleSerializer(required=False, allow_null=True)
     type = ChoiceField(choices=RACK_TYPE_CHOICES, required=False, allow_null=True)
     width = ChoiceField(choices=RACK_WIDTH_CHOICES, required=False)
+    outer_unit = ChoiceField(choices=RACK_DIMENSION_UNIT_CHOICES, required=False)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = Rack
         fields = [
-            'id', 'name', 'facility_id', 'display_name', 'site', 'group', 'tenant', 'role', 'serial', 'type', 'width',
-            'u_height', 'desc_units', 'comments', 'tags', 'custom_fields', 'created', 'last_updated',
+            'id', 'name', 'facility_id', 'display_name', 'site', 'group', 'tenant', 'status', 'role', 'serial',
+            'asset_tag', 'type', 'width', 'u_height', 'desc_units', 'outer_width', 'outer_depth', 'outer_unit',
+            'comments', 'tags', 'custom_fields', 'created', 'last_updated',
         ]
         # Omit the UniqueTogetherValidator that would be automatically added to validate (group, facility_id). This
         # prevents facility_id from being interpreted as a required field.
@@ -153,31 +135,11 @@ class RackSerializer(TaggitSerializer, CustomFieldModelSerializer):
             validator(data)
 
         # Enforce model validation
-        super(RackSerializer, self).validate(data)
+        super().validate(data)
 
         return data
 
 
-class NestedRackSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rack-detail')
-
-    class Meta:
-        model = Rack
-        fields = ['id', 'url', 'name', 'display_name']
-
-
-#
-# Rack units
-#
-
-class NestedDeviceSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:device-detail')
-
-    class Meta:
-        model = Device
-        fields = ['id', 'url', 'name', 'display_name']
-
-
 class RackUnitSerializer(serializers.Serializer):
     """
     A rack unit is an abstraction formed by the set (rack, position, face); it does not exist as a row in the database.
@@ -188,10 +150,6 @@ class RackUnitSerializer(serializers.Serializer):
     device = NestedDeviceSerializer(read_only=True)
 
 
-#
-# Rack reservations
-#
-
 class RackReservationSerializer(ValidatedModelSerializer):
     rack = NestedRackSerializer()
     user = NestedUserSerializer()
@@ -203,7 +161,7 @@ class RackReservationSerializer(ValidatedModelSerializer):
 
 
 #
-# Manufacturers
+# Device types
 #
 
 class ManufacturerSerializer(ValidatedModelSerializer):
@@ -213,21 +171,8 @@ class ManufacturerSerializer(ValidatedModelSerializer):
         fields = ['id', 'name', 'slug']
 
 
-class NestedManufacturerSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:manufacturer-detail')
-
-    class Meta:
-        model = Manufacturer
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Device types
-#
-
 class DeviceTypeSerializer(TaggitSerializer, CustomFieldModelSerializer):
     manufacturer = NestedManufacturerSerializer()
-    interface_ordering = ChoiceField(choices=IFACE_ORDERING_CHOICES, required=False)
     subdevice_role = ChoiceField(choices=SUBDEVICE_ROLE_CHOICES, required=False, allow_null=True)
     instance_count = serializers.IntegerField(source='instances.count', read_only=True)
     tags = TagListSerializerField(required=False)
@@ -235,25 +180,11 @@ class DeviceTypeSerializer(TaggitSerializer, CustomFieldModelSerializer):
     class Meta:
         model = DeviceType
         fields = [
-            'id', 'manufacturer', 'model', 'slug', 'part_number', 'u_height', 'is_full_depth', 'interface_ordering',
-            'is_console_server', 'is_pdu', 'is_network_device', 'subdevice_role', 'comments', 'tags', 'custom_fields',
-            'created', 'last_updated', 'instance_count',
+            'id', 'manufacturer', 'model', 'slug', 'part_number', 'u_height', 'is_full_depth', 'subdevice_role',
+            'comments', 'tags', 'custom_fields', 'created', 'last_updated', 'instance_count',
         ]
 
 
-class NestedDeviceTypeSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:devicetype-detail')
-    manufacturer = NestedManufacturerSerializer(read_only=True)
-
-    class Meta:
-        model = DeviceType
-        fields = ['id', 'url', 'manufacturer', 'model', 'slug']
-
-
-#
-# Console port templates
-#
-
 class ConsolePortTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
 
@@ -262,10 +193,6 @@ class ConsolePortTemplateSerializer(ValidatedModelSerializer):
         fields = ['id', 'device_type', 'name']
 
 
-#
-# Console server port templates
-#
-
 class ConsoleServerPortTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
 
@@ -274,10 +201,6 @@ class ConsoleServerPortTemplateSerializer(ValidatedModelSerializer):
         fields = ['id', 'device_type', 'name']
 
 
-#
-# Power port templates
-#
-
 class PowerPortTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
 
@@ -286,10 +209,6 @@ class PowerPortTemplateSerializer(ValidatedModelSerializer):
         fields = ['id', 'device_type', 'name']
 
 
-#
-# Power outlet templates
-#
-
 class PowerOutletTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
 
@@ -298,10 +217,6 @@ class PowerOutletTemplateSerializer(ValidatedModelSerializer):
         fields = ['id', 'device_type', 'name']
 
 
-#
-# Interface templates
-#
-
 class InterfaceTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
     form_factor = ChoiceField(choices=IFACE_FF_CHOICES, required=False)
@@ -311,9 +226,24 @@ class InterfaceTemplateSerializer(ValidatedModelSerializer):
         fields = ['id', 'device_type', 'name', 'form_factor', 'mgmt_only']
 
 
-#
-# Device bay templates
-#
+class RearPortTemplateSerializer(ValidatedModelSerializer):
+    device_type = NestedDeviceTypeSerializer()
+    type = ChoiceField(choices=PORT_TYPE_CHOICES)
+
+    class Meta:
+        model = RearPortTemplate
+        fields = ['id', 'device_type', 'name', 'type', 'positions']
+
+
+class FrontPortTemplateSerializer(ValidatedModelSerializer):
+    device_type = NestedDeviceTypeSerializer()
+    type = ChoiceField(choices=PORT_TYPE_CHOICES)
+    rear_port = NestedRearPortTemplateSerializer()
+
+    class Meta:
+        model = FrontPortTemplate
+        fields = ['id', 'device_type', 'name', 'type', 'rear_port', 'rear_port_position']
+
 
 class DeviceBayTemplateSerializer(ValidatedModelSerializer):
     device_type = NestedDeviceTypeSerializer()
@@ -324,7 +254,7 @@ class DeviceBayTemplateSerializer(ValidatedModelSerializer):
 
 
 #
-# Device roles
+# Devices
 #
 
 class DeviceRoleSerializer(ValidatedModelSerializer):
@@ -334,64 +264,12 @@ class DeviceRoleSerializer(ValidatedModelSerializer):
         fields = ['id', 'name', 'slug', 'color', 'vm_role']
 
 
-class NestedDeviceRoleSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:devicerole-detail')
-
-    class Meta:
-        model = DeviceRole
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Platforms
-#
-
 class PlatformSerializer(ValidatedModelSerializer):
     manufacturer = NestedManufacturerSerializer(required=False, allow_null=True)
 
     class Meta:
         model = Platform
-        fields = ['id', 'name', 'slug', 'manufacturer', 'napalm_driver', 'napalm_args', 'rpc_client']
-
-
-class NestedPlatformSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:platform-detail')
-
-    class Meta:
-        model = Platform
-        fields = ['id', 'url', 'name', 'slug']
-
-
-#
-# Devices
-#
-
-# Cannot import ipam.api.NestedIPAddressSerializer due to circular dependency
-class DeviceIPAddressSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='ipam-api:ipaddress-detail')
-
-    class Meta:
-        model = IPAddress
-        fields = ['id', 'url', 'family', 'address']
-
-
-# Cannot import virtualization.api.NestedClusterSerializer due to circular dependency
-class NestedClusterSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='virtualization-api:cluster-detail')
-
-    class Meta:
-        model = Cluster
-        fields = ['id', 'url', 'name']
-
-
-# Cannot import NestedVirtualChassisSerializer due to circular dependency
-class DeviceVirtualChassisSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:virtualchassis-detail')
-    master = NestedDeviceSerializer()
-
-    class Meta:
-        model = VirtualChassis
-        fields = ['id', 'url', 'master']
+        fields = ['id', 'name', 'slug', 'manufacturer', 'napalm_driver', 'napalm_args']
 
 
 class DeviceSerializer(TaggitSerializer, CustomFieldModelSerializer):
@@ -403,12 +281,12 @@ class DeviceSerializer(TaggitSerializer, CustomFieldModelSerializer):
     rack = NestedRackSerializer(required=False, allow_null=True)
     face = ChoiceField(choices=RACK_FACE_CHOICES, required=False, allow_null=True)
     status = ChoiceField(choices=DEVICE_STATUS_CHOICES, required=False)
-    primary_ip = DeviceIPAddressSerializer(read_only=True)
-    primary_ip4 = DeviceIPAddressSerializer(required=False, allow_null=True)
-    primary_ip6 = DeviceIPAddressSerializer(required=False, allow_null=True)
+    primary_ip = NestedIPAddressSerializer(read_only=True)
+    primary_ip4 = NestedIPAddressSerializer(required=False, allow_null=True)
+    primary_ip6 = NestedIPAddressSerializer(required=False, allow_null=True)
     parent_device = serializers.SerializerMethodField()
     cluster = NestedClusterSerializer(required=False, allow_null=True)
-    virtual_chassis = DeviceVirtualChassisSerializer(required=False, allow_null=True)
+    virtual_chassis = NestedVirtualChassisSerializer(required=False, allow_null=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
@@ -416,8 +294,8 @@ class DeviceSerializer(TaggitSerializer, CustomFieldModelSerializer):
         fields = [
             'id', 'name', 'display_name', 'device_type', 'device_role', 'tenant', 'platform', 'serial', 'asset_tag',
             'site', 'rack', 'position', 'face', 'parent_device', 'status', 'primary_ip', 'primary_ip4', 'primary_ip6',
-            'cluster', 'virtual_chassis', 'vc_position', 'vc_priority', 'comments', 'tags', 'custom_fields', 'created',
-            'last_updated', 'local_context_data',
+            'cluster', 'virtual_chassis', 'vc_position', 'vc_priority', 'comments', 'local_context_data', 'tags',
+            'custom_fields', 'created', 'last_updated',
         ]
         validators = []
 
@@ -430,7 +308,7 @@ class DeviceSerializer(TaggitSerializer, CustomFieldModelSerializer):
             validator(data)
 
         # Enforce model validation
-        super(DeviceSerializer, self).validate(data)
+        super().validate(data)
 
         return data
 
@@ -452,203 +330,90 @@ class DeviceWithConfigContextSerializer(DeviceSerializer):
         fields = [
             'id', 'name', 'display_name', 'device_type', 'device_role', 'tenant', 'platform', 'serial', 'asset_tag',
             'site', 'rack', 'position', 'face', 'parent_device', 'status', 'primary_ip', 'primary_ip4', 'primary_ip6',
-            'cluster', 'virtual_chassis', 'vc_position', 'vc_priority', 'comments', 'tags', 'custom_fields',
-            'config_context', 'created', 'last_updated', 'local_context_data',
+            'cluster', 'virtual_chassis', 'vc_position', 'vc_priority', 'comments', 'local_context_data', 'tags',
+            'custom_fields', 'config_context', 'created', 'last_updated',
         ]
 
     def get_config_context(self, obj):
         return obj.get_config_context()
 
 
-#
-# Console server ports
-#
-
-class ConsoleServerPortSerializer(TaggitSerializer, ValidatedModelSerializer):
+class ConsoleServerPortSerializer(TaggitSerializer, ConnectedEndpointSerializer):
     device = NestedDeviceSerializer()
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = ConsoleServerPort
-        fields = ['id', 'device', 'name', 'connected_console', 'tags']
-        read_only_fields = ['connected_console']
-
-
-class NestedConsoleServerPortSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:consoleserverport-detail')
-    device = NestedDeviceSerializer(read_only=True)
-    is_connected = serializers.SerializerMethodField(read_only=True)
-
-    class Meta:
-        model = ConsoleServerPort
-        fields = ['id', 'url', 'device', 'name', 'is_connected']
-
-    def get_is_connected(self, obj):
-        return hasattr(obj, 'connected_console') and obj.connected_console is not None
-
+        fields = [
+            'id', 'device', 'name', 'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable',
+            'tags',
+        ]
 
-#
-# Console ports
-#
 
-class ConsolePortSerializer(TaggitSerializer, ValidatedModelSerializer):
+class ConsolePortSerializer(TaggitSerializer, ConnectedEndpointSerializer):
     device = NestedDeviceSerializer()
-    cs_port = NestedConsoleServerPortSerializer(required=False, allow_null=True)
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = ConsolePort
-        fields = ['id', 'device', 'name', 'cs_port', 'connection_status', 'tags']
-
-
-class NestedConsolePortSerializer(TaggitSerializer, ValidatedModelSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:consoleport-detail')
-    device = NestedDeviceSerializer(read_only=True)
-    is_connected = serializers.SerializerMethodField(read_only=True)
-
-    class Meta:
-        model = ConsolePort
-        fields = ['id', 'url', 'device', 'name', 'is_connected']
-
-    def get_is_connected(self, obj):
-        return obj.cs_port is not None
-
+        fields = [
+            'id', 'device', 'name', 'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable',
+            'tags',
+        ]
 
-#
-# Power outlets
-#
 
-class PowerOutletSerializer(TaggitSerializer, ValidatedModelSerializer):
+class PowerOutletSerializer(TaggitSerializer, ConnectedEndpointSerializer):
     device = NestedDeviceSerializer()
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = PowerOutlet
-        fields = ['id', 'device', 'name', 'connected_port', 'tags']
-        read_only_fields = ['connected_port']
-
-
-class NestedPowerOutletSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:poweroutlet-detail')
-    device = NestedDeviceSerializer(read_only=True)
-    is_connected = serializers.SerializerMethodField(read_only=True)
-
-    class Meta:
-        model = PowerOutlet
-        fields = ['id', 'url', 'device', 'name', 'is_connected']
-
-    def get_is_connected(self, obj):
-        return hasattr(obj, 'connected_port') and obj.connected_port is not None
-
+        fields = [
+            'id', 'device', 'name', 'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable',
+            'tags',
+        ]
 
-#
-# Power ports
-#
 
-class PowerPortSerializer(TaggitSerializer, ValidatedModelSerializer):
+class PowerPortSerializer(TaggitSerializer, ConnectedEndpointSerializer):
     device = NestedDeviceSerializer()
-    power_outlet = NestedPowerOutletSerializer(required=False, allow_null=True)
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = PowerPort
-        fields = ['id', 'device', 'name', 'power_outlet', 'connection_status', 'tags']
-
-
-class NestedPowerPortSerializer(TaggitSerializer, ValidatedModelSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:powerport-detail')
-    device = NestedDeviceSerializer(read_only=True)
-    is_connected = serializers.SerializerMethodField(read_only=True)
-
-    class Meta:
-        model = PowerPort
-        fields = ['id', 'url', 'device', 'name', 'is_connected']
-
-    def get_is_connected(self, obj):
-        return obj.power_outlet is not None
-
-
-#
-# Interfaces
-#
-
-class IsConnectedMixin(object):
-    """
-    Provide a method for setting is_connected on Interface serializers.
-    """
-    def get_is_connected(self, obj):
-        """
-        Return True if the interface has a connected interface or circuit.
-        """
-        if obj.connection:
-            return True
-        if hasattr(obj, 'circuit_termination') and obj.circuit_termination is not None:
-            return True
-        return False
-
-
-class NestedInterfaceSerializer(IsConnectedMixin, WritableNestedSerializer):
-    device = NestedDeviceSerializer(read_only=True)
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:interface-detail')
-    is_connected = serializers.SerializerMethodField(read_only=True)
-
-    class Meta:
-        model = Interface
-        fields = ['id', 'url', 'device', 'name', 'is_connected']
-
-
-class InterfaceNestedCircuitSerializer(serializers.ModelSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='circuits-api:circuit-detail')
-
-    class Meta:
-        model = Circuit
-        fields = ['id', 'url', 'cid']
-
-
-class InterfaceCircuitTerminationSerializer(WritableNestedSerializer):
-    circuit = InterfaceNestedCircuitSerializer(read_only=True)
-
-    class Meta:
-        model = CircuitTermination
         fields = [
-            'id', 'circuit', 'term_side', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info',
+            'id', 'device', 'name', 'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable',
+            'tags',
         ]
 
 
-# Cannot import ipam.api.NestedVLANSerializer due to circular dependency
-class InterfaceVLANSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='ipam-api:vlan-detail')
-
-    class Meta:
-        model = VLAN
-        fields = ['id', 'url', 'vid', 'name', 'display_name']
-
-
-class InterfaceSerializer(TaggitSerializer, IsConnectedMixin, ValidatedModelSerializer):
+class InterfaceSerializer(TaggitSerializer, ConnectedEndpointSerializer):
     device = NestedDeviceSerializer()
     form_factor = ChoiceField(choices=IFACE_FF_CHOICES, required=False)
     lag = NestedInterfaceSerializer(required=False, allow_null=True)
-    is_connected = serializers.SerializerMethodField(read_only=True)
-    interface_connection = serializers.SerializerMethodField(read_only=True)
-    circuit_termination = InterfaceCircuitTerminationSerializer(read_only=True)
     mode = ChoiceField(choices=IFACE_MODE_CHOICES, required=False, allow_null=True)
-    untagged_vlan = InterfaceVLANSerializer(required=False, allow_null=True)
+    untagged_vlan = NestedVLANSerializer(required=False, allow_null=True)
     tagged_vlans = SerializedPKRelatedField(
         queryset=VLAN.objects.all(),
-        serializer=InterfaceVLANSerializer,
+        serializer=NestedVLANSerializer,
         required=False,
         many=True
     )
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
         model = Interface
         fields = [
             'id', 'device', 'name', 'form_factor', 'enabled', 'lag', 'mtu', 'mac_address', 'mgmt_only', 'description',
-            'is_connected', 'interface_connection', 'circuit_termination', 'mode', 'untagged_vlan', 'tagged_vlans',
-            'tags',
+            'connected_endpoint_type', 'connected_endpoint', 'connection_status', 'cable', 'mode', 'untagged_vlan',
+            'tagged_vlans', 'tags', 'count_ipaddresses',
         ]
 
+    # TODO: This validation should be handled by Interface.clean()
     def validate(self, data):
 
         # All associated VLANs be global or assigned to the parent device's site.
@@ -666,39 +431,51 @@ class InterfaceSerializer(TaggitSerializer, IsConnectedMixin, ValidatedModelSeri
                                     "be global.".format(vlan)
                 })
 
-        return super(InterfaceSerializer, self).validate(data)
+        return super().validate(data)
 
-    def get_interface_connection(self, obj):
-        if obj.connection:
-            context = {
-                'request': self.context['request'],
-                'interface': obj.connected_interface,
-            }
-            return ContextualInterfaceConnectionSerializer(obj.connection, context=context).data
-        return None
 
+class RearPortSerializer(ValidatedModelSerializer):
+    device = NestedDeviceSerializer()
+    type = ChoiceField(choices=PORT_TYPE_CHOICES)
+    cable = NestedCableSerializer(read_only=True)
+    tags = TagListSerializerField(required=False)
 
-#
-# Device bays
-#
+    class Meta:
+        model = RearPort
+        fields = ['id', 'device', 'name', 'type', 'positions', 'description', 'cable', 'tags']
 
-class DeviceBaySerializer(TaggitSerializer, ValidatedModelSerializer):
+
+class FrontPortRearPortSerializer(WritableNestedSerializer):
+    """
+    NestedRearPortSerializer but with parent device omitted (since front and rear ports must belong to same device)
+    """
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:rearport-detail')
+
+    class Meta:
+        model = RearPort
+        fields = ['id', 'url', 'name']
+
+
+class FrontPortSerializer(ValidatedModelSerializer):
     device = NestedDeviceSerializer()
-    installed_device = NestedDeviceSerializer(required=False, allow_null=True)
+    type = ChoiceField(choices=PORT_TYPE_CHOICES)
+    rear_port = FrontPortRearPortSerializer()
+    cable = NestedCableSerializer(read_only=True)
     tags = TagListSerializerField(required=False)
 
     class Meta:
-        model = DeviceBay
-        fields = ['id', 'device', 'name', 'installed_device', 'tags']
+        model = FrontPort
+        fields = ['id', 'device', 'name', 'type', 'rear_port', 'rear_port_position', 'description', 'cable', 'tags']
 
 
-class NestedDeviceBaySerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:devicebay-detail')
-    device = NestedDeviceSerializer(read_only=True)
+class DeviceBaySerializer(TaggitSerializer, ValidatedModelSerializer):
+    device = NestedDeviceSerializer()
+    installed_device = NestedDeviceSerializer(required=False, allow_null=True)
+    tags = TagListSerializerField(required=False)
 
     class Meta:
         model = DeviceBay
-        fields = ['id', 'url', 'device', 'name']
+        fields = ['id', 'device', 'name', 'installed_device', 'tags']
 
 
 #
@@ -721,40 +498,75 @@ class InventoryItemSerializer(TaggitSerializer, ValidatedModelSerializer):
 
 
 #
-# Interface connections
+# Cables
 #
 
-class InterfaceConnectionSerializer(ValidatedModelSerializer):
-    interface_a = NestedInterfaceSerializer()
-    interface_b = NestedInterfaceSerializer()
-    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, required=False)
+class CableSerializer(ValidatedModelSerializer):
+    termination_a_type = ContentTypeField()
+    termination_b_type = ContentTypeField()
+    termination_a = serializers.SerializerMethodField(read_only=True)
+    termination_b = serializers.SerializerMethodField(read_only=True)
+    status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, required=False)
+    length_unit = ChoiceField(choices=CABLE_LENGTH_UNIT_CHOICES, required=False)
 
     class Meta:
-        model = InterfaceConnection
-        fields = ['id', 'interface_a', 'interface_b', 'connection_status']
+        model = Cable
+        fields = [
+            'id', 'termination_a_type', 'termination_a_id', 'termination_a', 'termination_b_type', 'termination_b_id',
+            'termination_b', 'type', 'status', 'label', 'color', 'length', 'length_unit',
+        ]
 
+    def _get_termination(self, obj, side):
+        """
+        Serialize a nested representation of a termination.
+        """
+        if side.lower() not in ['a', 'b']:
+            raise ValueError("Termination side must be either A or B.")
+        termination = getattr(obj, 'termination_{}'.format(side.lower()))
+        if termination is None:
+            return None
+        serializer = get_serializer_for_model(termination, prefix='Nested')
+        context = {'request': self.context['request']}
+        data = serializer(termination, context=context).data
+
+        return data
 
-class NestedInterfaceConnectionSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:interfaceconnection-detail')
+    def get_termination_a(self, obj):
+        return self._get_termination(obj, 'a')
 
-    class Meta:
-        model = InterfaceConnection
-        fields = ['id', 'url', 'connection_status']
+    def get_termination_b(self, obj):
+        return self._get_termination(obj, 'b')
 
 
-class ContextualInterfaceConnectionSerializer(serializers.ModelSerializer):
+class TracedCableSerializer(serializers.ModelSerializer):
     """
-    A read-only representation of an InterfaceConnection from the perspective of either of its two connected Interfaces.
+    Used only while tracing a cable path.
     """
-    interface = serializers.SerializerMethodField(read_only=True)
-    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, read_only=True)
+    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:cable-detail')
 
     class Meta:
-        model = InterfaceConnection
-        fields = ['id', 'interface', 'connection_status']
+        model = Cable
+        fields = [
+            'id', 'url', 'type', 'status', 'label', 'color', 'length', 'length_unit',
+        ]
 
-    def get_interface(self, obj):
-        return NestedInterfaceSerializer(self.context['interface'], context=self.context).data
+
+#
+# Interface connections
+#
+
+class InterfaceConnectionSerializer(ValidatedModelSerializer):
+    interface_a = serializers.SerializerMethodField()
+    interface_b = NestedInterfaceSerializer(source='connected_endpoint')
+    connection_status = ChoiceField(choices=CONNECTION_STATUS_CHOICES, required=False)
+
+    class Meta:
+        model = Interface
+        fields = ['interface_a', 'interface_b', 'connection_status']
+
+    def get_interface_a(self, obj):
+        context = {'request': self.context['request']}
+        return NestedInterfaceSerializer(instance=obj, context=context).data
 
 
 #
@@ -768,11 +580,3 @@ class VirtualChassisSerializer(TaggitSerializer, ValidatedModelSerializer):
     class Meta:
         model = VirtualChassis
         fields = ['id', 'master', 'domain', 'tags']
-
-
-class NestedVirtualChassisSerializer(WritableNestedSerializer):
-    url = serializers.HyperlinkedIdentityField(view_name='dcim-api:virtualchassis-detail')
-
-    class Meta:
-        model = VirtualChassis
-        fields = ['id', 'url']

netbox/dcim/api/urls.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from rest_framework import routers
 
 from . import views
@@ -17,7 +15,7 @@ router = routers.DefaultRouter()
 router.APIRootView = DCIMRootView
 
 # Field choices
-router.register(r'_choices', views.DCIMFieldChoicesViewSet, base_name='field-choice')
+router.register(r'_choices', views.DCIMFieldChoicesViewSet, basename='field-choice')
 
 # Sites
 router.register(r'regions', views.RegionViewSet)
@@ -39,6 +37,8 @@ router.register(r'console-server-port-templates', views.ConsoleServerPortTemplat
 router.register(r'power-port-templates', views.PowerPortTemplateViewSet)
 router.register(r'power-outlet-templates', views.PowerOutletTemplateViewSet)
 router.register(r'interface-templates', views.InterfaceTemplateViewSet)
+router.register(r'front-port-templates', views.FrontPortTemplateViewSet)
+router.register(r'rear-port-templates', views.RearPortTemplateViewSet)
 router.register(r'device-bay-templates', views.DeviceBayTemplateViewSet)
 
 # Devices
@@ -52,19 +52,24 @@ router.register(r'console-server-ports', views.ConsoleServerPortViewSet)
 router.register(r'power-ports', views.PowerPortViewSet)
 router.register(r'power-outlets', views.PowerOutletViewSet)
 router.register(r'interfaces', views.InterfaceViewSet)
+router.register(r'front-ports', views.FrontPortViewSet)
+router.register(r'rear-ports', views.RearPortViewSet)
 router.register(r'device-bays', views.DeviceBayViewSet)
 router.register(r'inventory-items', views.InventoryItemViewSet)
 
 # Connections
-router.register(r'console-connections', views.ConsoleConnectionViewSet, base_name='consoleconnections')
-router.register(r'power-connections', views.PowerConnectionViewSet, base_name='powerconnections')
-router.register(r'interface-connections', views.InterfaceConnectionViewSet)
+router.register(r'console-connections', views.ConsoleConnectionViewSet, basename='consoleconnections')
+router.register(r'power-connections', views.PowerConnectionViewSet, basename='powerconnections')
+router.register(r'interface-connections', views.InterfaceConnectionViewSet, basename='interfaceconnections')
+
+# Cables
+router.register(r'cables', views.CableViewSet)
 
 # Virtual chassis
 router.register(r'virtual-chassis', views.VirtualChassisViewSet)
 
 # Miscellaneous
-router.register(r'connected-device', views.ConnectedDeviceViewSet, base_name='connected-device')
+router.register(r'connected-device', views.ConnectedDeviceViewSet, basename='connected-device')
 
 app_name = 'dcim-api'
 urlpatterns = router.urls

netbox/dcim/api/views.py

@@ -1,8 +1,7 @@
-from __future__ import unicode_literals
-
 from collections import OrderedDict
 
 from django.conf import settings
+from django.db.models import F, Q
 from django.http import HttpResponseForbidden
 from django.shortcuts import get_object_or_404
 from drf_yasg import openapi
@@ -15,15 +14,17 @@ from rest_framework.viewsets import GenericViewSet, ViewSet
 
 from dcim import filters
 from dcim.models import (
-    ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
-    DeviceBayTemplate, DeviceRole, DeviceType, Interface, InterfaceConnection, InterfaceTemplate, Manufacturer,
-    InventoryItem, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack, RackGroup,
-    RackReservation, RackRole, Region, Site, VirtualChassis,
+    Cable, ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
+    DeviceBayTemplate, DeviceRole, DeviceType, FrontPort, FrontPortTemplate, Interface, InterfaceTemplate,
+    Manufacturer, InventoryItem, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack,
+    RackGroup, RackReservation, RackRole, RearPort, RearPortTemplate, Region, Site, VirtualChassis,
 )
 from extras.api.serializers import RenderedGraphSerializer
 from extras.api.views import CustomFieldModelViewSet
 from extras.models import Graph, GRAPH_TYPE_INTERFACE, GRAPH_TYPE_SITE
-from utilities.api import IsAuthenticatedOrLoginNotRequired, FieldChoicesViewSet, ModelViewSet, ServiceUnavailable
+from utilities.api import (
+    get_serializer_for_model, IsAuthenticatedOrLoginNotRequired, FieldChoicesViewSet, ModelViewSet, ServiceUnavailable,
+)
 from . import serializers
 from .exceptions import MissingFilterException
 
@@ -34,17 +35,51 @@ from .exceptions import MissingFilterException
 
 class DCIMFieldChoicesViewSet(FieldChoicesViewSet):
     fields = (
+        (Cable, ['length_unit']),
         (Device, ['face', 'status']),
         (ConsolePort, ['connection_status']),
-        (Interface, ['form_factor', 'mode']),
-        (InterfaceConnection, ['connection_status']),
+        (Interface, ['connection_status', 'form_factor', 'mode']),
         (InterfaceTemplate, ['form_factor']),
         (PowerPort, ['connection_status']),
-        (Rack, ['type', 'width']),
+        (Rack, ['outer_unit', 'status', 'type', 'width']),
         (Site, ['status']),
     )
 
 
+# Mixins
+
+class CableTraceMixin(object):
+
+    @action(detail=True, url_path='trace')
+    def trace(self, request, pk):
+        """
+        Trace a complete cable path and return each segment as a three-tuple of (termination, cable, termination).
+        """
+        obj = get_object_or_404(self.queryset.model, pk=pk)
+
+        # Initialize the path array
+        path = []
+
+        for near_end, cable, far_end in obj.trace():
+
+            # Serialize each object
+            serializer_a = get_serializer_for_model(near_end, prefix='Nested')
+            x = serializer_a(near_end, context={'request': request}).data
+            if cable is not None:
+                y = serializers.TracedCableSerializer(cable, context={'request': request}).data
+            else:
+                y = None
+            if far_end is not None:
+                serializer_b = get_serializer_for_model(far_end, prefix='Nested')
+                z = serializer_b(far_end, context={'request': request}).data
+            else:
+                z = None
+
+            path.append((x, y, z))
+
+        return Response(path)
+
+
 #
 # Regions
 #
@@ -52,7 +87,7 @@ class DCIMFieldChoicesViewSet(FieldChoicesViewSet):
 class RegionViewSet(ModelViewSet):
     queryset = Region.objects.all()
     serializer_class = serializers.RegionSerializer
-    filter_class = filters.RegionFilter
+    filterset_class = filters.RegionFilter
 
 
 #
@@ -62,7 +97,7 @@ class RegionViewSet(ModelViewSet):
 class SiteViewSet(CustomFieldModelViewSet):
     queryset = Site.objects.select_related('region', 'tenant').prefetch_related('tags')
     serializer_class = serializers.SiteSerializer
-    filter_class = filters.SiteFilter
+    filterset_class = filters.SiteFilter
 
     @action(detail=True)
     def graphs(self, request, pk=None):
@@ -82,7 +117,7 @@ class SiteViewSet(CustomFieldModelViewSet):
 class RackGroupViewSet(ModelViewSet):
     queryset = RackGroup.objects.select_related('site')
     serializer_class = serializers.RackGroupSerializer
-    filter_class = filters.RackGroupFilter
+    filterset_class = filters.RackGroupFilter
 
 
 #
@@ -92,7 +127,7 @@ class RackGroupViewSet(ModelViewSet):
 class RackRoleViewSet(ModelViewSet):
     queryset = RackRole.objects.all()
     serializer_class = serializers.RackRoleSerializer
-    filter_class = filters.RackRoleFilter
+    filterset_class = filters.RackRoleFilter
 
 
 #
@@ -102,7 +137,7 @@ class RackRoleViewSet(ModelViewSet):
 class RackViewSet(CustomFieldModelViewSet):
     queryset = Rack.objects.select_related('site', 'group__site', 'tenant').prefetch_related('tags')
     serializer_class = serializers.RackSerializer
-    filter_class = filters.RackFilter
+    filterset_class = filters.RackFilter
 
     @action(detail=True)
     def units(self, request, pk=None):
@@ -132,7 +167,7 @@ class RackViewSet(CustomFieldModelViewSet):
 class RackReservationViewSet(ModelViewSet):
     queryset = RackReservation.objects.select_related('rack', 'user', 'tenant')
     serializer_class = serializers.RackReservationSerializer
-    filter_class = filters.RackReservationFilter
+    filterset_class = filters.RackReservationFilter
 
     # Assign user from request
     def perform_create(self, serializer):
@@ -146,7 +181,7 @@ class RackReservationViewSet(ModelViewSet):
 class ManufacturerViewSet(ModelViewSet):
     queryset = Manufacturer.objects.all()
     serializer_class = serializers.ManufacturerSerializer
-    filter_class = filters.ManufacturerFilter
+    filterset_class = filters.ManufacturerFilter
 
 
 #
@@ -156,7 +191,7 @@ class ManufacturerViewSet(ModelViewSet):
 class DeviceTypeViewSet(CustomFieldModelViewSet):
     queryset = DeviceType.objects.select_related('manufacturer').prefetch_related('tags')
     serializer_class = serializers.DeviceTypeSerializer
-    filter_class = filters.DeviceTypeFilter
+    filterset_class = filters.DeviceTypeFilter
 
 
 #
@@ -166,37 +201,49 @@ class DeviceTypeViewSet(CustomFieldModelViewSet):
 class ConsolePortTemplateViewSet(ModelViewSet):
     queryset = ConsolePortTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.ConsolePortTemplateSerializer
-    filter_class = filters.ConsolePortTemplateFilter
+    filterset_class = filters.ConsolePortTemplateFilter
 
 
 class ConsoleServerPortTemplateViewSet(ModelViewSet):
     queryset = ConsoleServerPortTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.ConsoleServerPortTemplateSerializer
-    filter_class = filters.ConsoleServerPortTemplateFilter
+    filterset_class = filters.ConsoleServerPortTemplateFilter
 
 
 class PowerPortTemplateViewSet(ModelViewSet):
     queryset = PowerPortTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.PowerPortTemplateSerializer
-    filter_class = filters.PowerPortTemplateFilter
+    filterset_class = filters.PowerPortTemplateFilter
 
 
 class PowerOutletTemplateViewSet(ModelViewSet):
     queryset = PowerOutletTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.PowerOutletTemplateSerializer
-    filter_class = filters.PowerOutletTemplateFilter
+    filterset_class = filters.PowerOutletTemplateFilter
 
 
 class InterfaceTemplateViewSet(ModelViewSet):
     queryset = InterfaceTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.InterfaceTemplateSerializer
-    filter_class = filters.InterfaceTemplateFilter
+    filterset_class = filters.InterfaceTemplateFilter
+
+
+class FrontPortTemplateViewSet(ModelViewSet):
+    queryset = FrontPortTemplate.objects.select_related('device_type__manufacturer')
+    serializer_class = serializers.FrontPortTemplateSerializer
+    filterset_class = filters.FrontPortTemplateFilter
+
+
+class RearPortTemplateViewSet(ModelViewSet):
+    queryset = RearPortTemplate.objects.select_related('device_type__manufacturer')
+    serializer_class = serializers.RearPortTemplateSerializer
+    filterset_class = filters.RearPortTemplateFilter
 
 
 class DeviceBayTemplateViewSet(ModelViewSet):
     queryset = DeviceBayTemplate.objects.select_related('device_type__manufacturer')
     serializer_class = serializers.DeviceBayTemplateSerializer
-    filter_class = filters.DeviceBayTemplateFilter
+    filterset_class = filters.DeviceBayTemplateFilter
 
 
 #
@@ -206,7 +253,7 @@ class DeviceBayTemplateViewSet(ModelViewSet):
 class DeviceRoleViewSet(ModelViewSet):
     queryset = DeviceRole.objects.all()
     serializer_class = serializers.DeviceRoleSerializer
-    filter_class = filters.DeviceRoleFilter
+    filterset_class = filters.DeviceRoleFilter
 
 
 #
@@ -216,7 +263,7 @@ class DeviceRoleViewSet(ModelViewSet):
 class PlatformViewSet(ModelViewSet):
     queryset = Platform.objects.all()
     serializer_class = serializers.PlatformSerializer
-    filter_class = filters.PlatformFilter
+    filterset_class = filters.PlatformFilter
 
 
 #
@@ -230,7 +277,7 @@ class DeviceViewSet(CustomFieldModelViewSet):
     ).prefetch_related(
         'primary_ip4__nat_outside', 'primary_ip6__nat_outside', 'tags',
     )
-    filter_class = filters.DeviceFilter
+    filterset_class = filters.DeviceFilter
 
     def get_serializer_class(self):
         """
@@ -321,34 +368,54 @@ class DeviceViewSet(CustomFieldModelViewSet):
 # Device components
 #
 
-class ConsolePortViewSet(ModelViewSet):
-    queryset = ConsolePort.objects.select_related('device', 'cs_port__device').prefetch_related('tags')
+class ConsolePortViewSet(CableTraceMixin, ModelViewSet):
+    queryset = ConsolePort.objects.select_related(
+        'device', 'connected_endpoint__device', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
     serializer_class = serializers.ConsolePortSerializer
-    filter_class = filters.ConsolePortFilter
+    filterset_class = filters.ConsolePortFilter
 
 
-class ConsoleServerPortViewSet(ModelViewSet):
-    queryset = ConsoleServerPort.objects.select_related('device', 'connected_console__device').prefetch_related('tags')
+class ConsoleServerPortViewSet(CableTraceMixin, ModelViewSet):
+    queryset = ConsoleServerPort.objects.select_related(
+        'device', 'connected_endpoint__device', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
     serializer_class = serializers.ConsoleServerPortSerializer
-    filter_class = filters.ConsoleServerPortFilter
+    filterset_class = filters.ConsoleServerPortFilter
 
 
-class PowerPortViewSet(ModelViewSet):
-    queryset = PowerPort.objects.select_related('device', 'power_outlet__device').prefetch_related('tags')
+class PowerPortViewSet(CableTraceMixin, ModelViewSet):
+    queryset = PowerPort.objects.select_related(
+        'device', 'connected_endpoint__device', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
     serializer_class = serializers.PowerPortSerializer
-    filter_class = filters.PowerPortFilter
+    filterset_class = filters.PowerPortFilter
 
 
-class PowerOutletViewSet(ModelViewSet):
-    queryset = PowerOutlet.objects.select_related('device', 'connected_port__device').prefetch_related('tags')
+class PowerOutletViewSet(CableTraceMixin, ModelViewSet):
+    queryset = PowerOutlet.objects.select_related(
+        'device', 'connected_endpoint__device', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
     serializer_class = serializers.PowerOutletSerializer
-    filter_class = filters.PowerOutletFilter
+    filterset_class = filters.PowerOutletFilter
 
 
-class InterfaceViewSet(ModelViewSet):
-    queryset = Interface.objects.select_related('device').prefetch_related('tags')
+class InterfaceViewSet(CableTraceMixin, ModelViewSet):
+    queryset = Interface.objects.select_related(
+        'device', '_connected_interface', '_connected_circuittermination', 'cable'
+    ).prefetch_related(
+        'ip_addresses', 'tags'
+    )
     serializer_class = serializers.InterfaceSerializer
-    filter_class = filters.InterfaceFilter
+    filterset_class = filters.InterfaceFilter
 
     @action(detail=True)
     def graphs(self, request, pk=None):
@@ -361,16 +428,36 @@ class InterfaceViewSet(ModelViewSet):
         return Response(serializer.data)
 
 
+class FrontPortViewSet(ModelViewSet):
+    queryset = FrontPort.objects.select_related(
+        'device__device_type__manufacturer', 'rear_port', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
+    serializer_class = serializers.FrontPortSerializer
+    filterset_class = filters.FrontPortFilter
+
+
+class RearPortViewSet(ModelViewSet):
+    queryset = RearPort.objects.select_related(
+        'device__device_type__manufacturer', 'cable'
+    ).prefetch_related(
+        'tags'
+    )
+    serializer_class = serializers.RearPortSerializer
+    filterset_class = filters.RearPortFilter
+
+
 class DeviceBayViewSet(ModelViewSet):
     queryset = DeviceBay.objects.select_related('installed_device').prefetch_related('tags')
     serializer_class = serializers.DeviceBaySerializer
-    filter_class = filters.DeviceBayFilter
+    filterset_class = filters.DeviceBayFilter
 
 
 class InventoryItemViewSet(ModelViewSet):
     queryset = InventoryItem.objects.select_related('device', 'manufacturer').prefetch_related('tags')
     serializer_class = serializers.InventoryItemSerializer
-    filter_class = filters.InventoryItemFilter
+    filterset_class = filters.InventoryItemFilter
 
 
 #
@@ -378,21 +465,47 @@ class InventoryItemViewSet(ModelViewSet):
 #
 
 class ConsoleConnectionViewSet(ListModelMixin, GenericViewSet):
-    queryset = ConsolePort.objects.select_related('device', 'cs_port__device').filter(cs_port__isnull=False)
+    queryset = ConsolePort.objects.select_related(
+        'device', 'connected_endpoint__device'
+    ).filter(
+        connected_endpoint__isnull=False
+    )
     serializer_class = serializers.ConsolePortSerializer
-    filter_class = filters.ConsoleConnectionFilter
+    filterset_class = filters.ConsoleConnectionFilter
 
 
 class PowerConnectionViewSet(ListModelMixin, GenericViewSet):
-    queryset = PowerPort.objects.select_related('device', 'power_outlet__device').filter(power_outlet__isnull=False)
+    queryset = PowerPort.objects.select_related(
+        'device', 'connected_endpoint__device'
+    ).filter(
+        connected_endpoint__isnull=False
+    )
     serializer_class = serializers.PowerPortSerializer
-    filter_class = filters.PowerConnectionFilter
+    filterset_class = filters.PowerConnectionFilter
 
 
 class InterfaceConnectionViewSet(ModelViewSet):
-    queryset = InterfaceConnection.objects.select_related('interface_a__device', 'interface_b__device')
+    queryset = Interface.objects.select_related(
+        'device', '_connected_interface', '_connected_circuittermination'
+    ).filter(
+        # Avoid duplicate connections by only selecting the lower PK in a connected pair
+        Q(_connected_interface__isnull=False, pk__lt=F('_connected_interface')) |
+        Q(_connected_circuittermination__isnull=False)
+    )
     serializer_class = serializers.InterfaceConnectionSerializer
-    filter_class = filters.InterfaceConnectionFilter
+    filterset_class = filters.InterfaceConnectionFilter
+
+
+#
+# Cables
+#
+
+class CableViewSet(ModelViewSet):
+    queryset = Cable.objects.prefetch_related(
+        'termination_a', 'termination_b'
+    )
+    serializer_class = serializers.CableSerializer
+    filterset_class = filters.CableFilter
 
 
 #
@@ -418,32 +531,39 @@ class ConnectedDeviceViewSet(ViewSet):
     * `peer_interface`: The name of the peer interface
     """
     permission_classes = [IsAuthenticatedOrLoginNotRequired]
-    _device_param = Parameter('peer_device', 'query',
-                              description='The name of the peer device', required=True, type=openapi.TYPE_STRING)
-    _interface_param = Parameter('peer_interface', 'query',
-                                 description='The name of the peer interface', required=True, type=openapi.TYPE_STRING)
+    _device_param = Parameter(
+        name='peer_device',
+        in_='query',
+        description='The name of the peer device',
+        required=True,
+        type=openapi.TYPE_STRING
+    )
+    _interface_param = Parameter(
+        name='peer_interface',
+        in_='query',
+        description='The name of the peer interface',
+        required=True,
+        type=openapi.TYPE_STRING
+    )
 
     def get_view_name(self):
         return "Connected Device Locator"
 
     @swagger_auto_schema(
-        manual_parameters=[_device_param, _interface_param], responses={'200': serializers.DeviceSerializer})
+        manual_parameters=[_device_param, _interface_param],
+        responses={'200': serializers.DeviceSerializer}
+    )
     def list(self, request):
 
         peer_device_name = request.query_params.get(self._device_param.name)
-        if not peer_device_name:
-            # TODO: remove this after 2.4 as the switch to using underscores is a breaking change
-            peer_device_name = request.query_params.get('peer-device')
         peer_interface_name = request.query_params.get(self._interface_param.name)
-        if not peer_interface_name:
-            # TODO: remove this after 2.4 as the switch to using underscores is a breaking change
-            peer_interface_name = request.query_params.get('peer-interface')
+
         if not peer_device_name or not peer_interface_name:
             raise MissingFilterException(detail='Request must include "peer_device" and "peer_interface" filters.')
 
         # Determine local interface from peer interface's connection
         peer_interface = get_object_or_404(Interface, device__name=peer_device_name, name=peer_interface_name)
-        local_interface = peer_interface.connected_interface
+        local_interface = peer_interface._connected_interface
 
         if local_interface is None:
             return Response()

netbox/dcim/apps.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.apps import AppConfig
 
 

netbox/dcim/constants.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 
 # Rack types
 RACK_TYPE_2POST = 100
@@ -31,6 +29,20 @@ RACK_FACE_CHOICES = [
     [RACK_FACE_REAR, 'Rear'],
 ]
 
+# Rack statuses
+RACK_STATUS_RESERVED = 0
+RACK_STATUS_AVAILABLE = 1
+RACK_STATUS_PLANNED = 2
+RACK_STATUS_ACTIVE = 3
+RACK_STATUS_DEPRECATED = 4
+RACK_STATUS_CHOICES = [
+    [RACK_STATUS_ACTIVE, 'Active'],
+    [RACK_STATUS_PLANNED, 'Planned'],
+    [RACK_STATUS_RESERVED, 'Reserved'],
+    [RACK_STATUS_AVAILABLE, 'Available'],
+    [RACK_STATUS_DEPRECATED, 'Deprecated'],
+]
+
 # Parent/child device roles
 SUBDEVICE_ROLE_PARENT = True
 SUBDEVICE_ROLE_CHILD = False
@@ -233,6 +245,36 @@ IFACE_MODE_CHOICES = [
     [IFACE_MODE_TAGGED_ALL, 'Tagged All'],
 ]
 
+# Pass-through port types
+PORT_TYPE_8P8C = 1000
+PORT_TYPE_ST = 2000
+PORT_TYPE_SC = 2100
+PORT_TYPE_FC = 2200
+PORT_TYPE_LC = 2300
+PORT_TYPE_MTRJ = 2400
+PORT_TYPE_MPO = 2500
+PORT_TYPE_LSH = 2600
+PORT_TYPE_CHOICES = [
+    [
+        'Copper',
+        [
+            [PORT_TYPE_8P8C, '8P8C'],
+        ],
+    ],
+    [
+        'Fiber Optic',
+        [
+            [PORT_TYPE_FC, 'FC'],
+            [PORT_TYPE_LC, 'LC'],
+            [PORT_TYPE_LSH, 'LSH'],
+            [PORT_TYPE_MPO, 'MPO'],
+            [PORT_TYPE_MTRJ, 'MTRJ'],
+            [PORT_TYPE_SC, 'SC'],
+            [PORT_TYPE_ST, 'ST'],
+        ]
+    ]
+]
+
 # Device statuses
 DEVICE_STATUS_OFFLINE = 0
 DEVICE_STATUS_ACTIVE = 1
@@ -259,7 +301,7 @@ SITE_STATUS_CHOICES = [
     [SITE_STATUS_RETIRED, 'Retired'],
 ]
 
-# Bootstrap CSS classes for device statuses
+# Bootstrap CSS classes for device/rack statuses
 STATUS_CLASSES = {
     0: 'warning',
     1: 'success',
@@ -277,12 +319,81 @@ CONNECTION_STATUS_CHOICES = [
     [CONNECTION_STATUS_CONNECTED, 'Connected'],
 ]
 
-# Platform -> RPC client mappings
-RPC_CLIENT_JUNIPER_JUNOS = 'juniper-junos'
-RPC_CLIENT_CISCO_IOS = 'cisco-ios'
-RPC_CLIENT_OPENGEAR = 'opengear'
-RPC_CLIENT_CHOICES = [
-    [RPC_CLIENT_JUNIPER_JUNOS, 'Juniper Junos (NETCONF)'],
-    [RPC_CLIENT_CISCO_IOS, 'Cisco IOS (SSH)'],
-    [RPC_CLIENT_OPENGEAR, 'Opengear (SSH)'],
+# Cable endpoint types
+CABLE_TERMINATION_TYPES = [
+    'consoleport', 'consoleserverport', 'interface', 'poweroutlet', 'powerport', 'frontport', 'rearport',
 ]
+
+# Cable types
+CABLE_TYPE_CAT3 = 1300
+CABLE_TYPE_CAT5 = 1500
+CABLE_TYPE_CAT5E = 1510
+CABLE_TYPE_CAT6 = 1600
+CABLE_TYPE_CAT6A = 1610
+CABLE_TYPE_CAT7 = 1700
+CABLE_TYPE_MMF_OM1 = 3010
+CABLE_TYPE_MMF_OM2 = 3020
+CABLE_TYPE_MMF_OM3 = 3030
+CABLE_TYPE_MMF_OM4 = 3040
+CABLE_TYPE_SMF = 3500
+CABLE_TYPE_POWER = 5000
+CABLE_TYPE_CHOICES = (
+    (
+        'Copper', (
+            (CABLE_TYPE_CAT3, 'CAT3'),
+            (CABLE_TYPE_CAT5, 'CAT5'),
+            (CABLE_TYPE_CAT5E, 'CAT5e'),
+            (CABLE_TYPE_CAT6, 'CAT6'),
+            (CABLE_TYPE_CAT6A, 'CAT6a'),
+            (CABLE_TYPE_CAT7, 'CAT7'),
+        ),
+    ),
+    (
+        'Fiber', (
+            (CABLE_TYPE_MMF_OM1, 'Multimode Fiber (OM1)'),
+            (CABLE_TYPE_MMF_OM2, 'Multimode Fiber (OM2)'),
+            (CABLE_TYPE_MMF_OM3, 'Multimode Fiber (OM3)'),
+            (CABLE_TYPE_MMF_OM4, 'Multimode Fiber (OM4)'),
+            (CABLE_TYPE_SMF, 'Singlemode Fiber'),
+        ),
+    ),
+    (CABLE_TYPE_POWER, 'Power'),
+)
+
+CABLE_TERMINATION_TYPE_CHOICES = {
+    # (API endpoint, human-friendly name)
+    'consoleport': ('console-ports', 'Console port'),
+    'consoleserverport': ('console-server-ports', 'Console server port'),
+    'powerport': ('power-ports', 'Power port'),
+    'poweroutlet': ('power-outlets', 'Power outlet'),
+    'interface': ('interfaces', 'Interface'),
+    'frontport': ('front-ports', 'Front panel port'),
+    'rearport': ('rear-ports', 'Rear panel port'),
+}
+
+COMPATIBLE_TERMINATION_TYPES = {
+    'consoleport': ['consoleserverport', 'frontport', 'rearport'],
+    'consoleserverport': ['consoleport', 'frontport', 'rearport'],
+    'powerport': ['poweroutlet'],
+    'poweroutlet': ['powerport'],
+    'interface': ['interface', 'circuittermination', 'frontport', 'rearport'],
+    'frontport': ['consoleport', 'consoleserverport', 'interface', 'frontport', 'rearport', 'circuittermination'],
+    'rearport': ['consoleport', 'consoleserverport', 'interface', 'frontport', 'rearport', 'circuittermination'],
+    'circuittermination': ['interface', 'frontport', 'rearport'],
+}
+
+LENGTH_UNIT_METER = 1200
+LENGTH_UNIT_CENTIMETER = 1100
+LENGTH_UNIT_MILLIMETER = 1000
+LENGTH_UNIT_FOOT = 2100
+LENGTH_UNIT_INCH = 2000
+CABLE_LENGTH_UNIT_CHOICES = (
+    (LENGTH_UNIT_METER, 'Meters'),
+    (LENGTH_UNIT_CENTIMETER, 'Centimeters'),
+    (LENGTH_UNIT_FOOT, 'Feet'),
+    (LENGTH_UNIT_INCH, 'Inches'),
+)
+RACK_DIMENSION_UNIT_CHOICES = (
+    (LENGTH_UNIT_MILLIMETER, 'Millimeters'),
+    (LENGTH_UNIT_INCH, 'Inches'),
+)

netbox/dcim/fields.py

@@ -1,10 +1,7 @@
-from __future__ import unicode_literals
-
-from netaddr import AddrFormatError, EUI, mac_unix_expanded
-
 from django.core.exceptions import ValidationError
 from django.core.validators import MinValueValidator, MaxValueValidator
 from django.db import models
+from netaddr import AddrFormatError, EUI, mac_unix_expanded
 
 
 class ASNField(models.BigIntegerField):

netbox/dcim/filters.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import django_filters
 from django.contrib.auth.models import User
 from django.core.exceptions import ObjectDoesNotExist
@@ -9,17 +7,15 @@ from netaddr.core import AddrFormatError
 
 from extras.filters import CustomFieldFilterSet
 from tenancy.models import Tenant
+from utilities.constants import COLOR_CHOICES
 from utilities.filters import NullableCharFieldFilter, NumericInFilter, TagFilter
 from virtualization.models import Cluster
-from .constants import (
-    DEVICE_STATUS_CHOICES, IFACE_FF_LAG, NONCONNECTABLE_IFACE_TYPES, SITE_STATUS_CHOICES, VIRTUAL_IFACE_TYPES,
-    WIRELESS_IFACE_TYPES, IFACE_FF_CHOICES,
-)
+from .constants import *
 from .models import (
-    ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
-    DeviceBayTemplate, DeviceRole, DeviceType, Interface, InterfaceConnection, InterfaceTemplate, Manufacturer,
-    InventoryItem, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack, RackGroup,
-    RackReservation, RackRole, Region, Site, VirtualChassis,
+    Cable, ConsolePort, ConsolePortTemplate, ConsoleServerPort, ConsoleServerPortTemplate, Device, DeviceBay,
+    DeviceBayTemplate, DeviceRole, DeviceType, FrontPort, FrontPortTemplate, Interface, InterfaceTemplate,
+    InventoryItem, Manufacturer, Platform, PowerOutlet, PowerOutletTemplate, PowerPort, PowerPortTemplate, Rack,
+    RackGroup, RackReservation, RackRole, RearPort, RearPortTemplate, Region, Site, VirtualChassis,
 )
 
 
@@ -33,7 +29,7 @@ class RegionFilter(django_filters.FilterSet):
         label='Parent region (ID)',
     )
     parent = django_filters.ModelMultipleChoiceFilter(
-        name='parent__slug',
+        field_name='parent__slug',
         queryset=Region.objects.all(),
         to_field_name='slug',
         label='Parent region (slug)',
@@ -54,7 +50,10 @@ class RegionFilter(django_filters.FilterSet):
 
 
 class SiteFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
@@ -68,7 +67,7 @@ class SiteFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Region (ID)',
     )
     region = django_filters.ModelMultipleChoiceFilter(
-        name='region__slug',
+        field_name='region__slug',
         queryset=Region.objects.all(),
         to_field_name='slug',
         label='Region (slug)',
@@ -78,7 +77,7 @@ class SiteFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='tenant__slug',
+        field_name='tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
@@ -120,7 +119,7 @@ class RackGroupFilter(django_filters.FilterSet):
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='site__slug',
+        field_name='site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
@@ -148,7 +147,10 @@ class RackRoleFilter(django_filters.FilterSet):
 
 
 class RackFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
@@ -159,7 +161,7 @@ class RackFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='site__slug',
+        field_name='site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
@@ -169,7 +171,7 @@ class RackFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Group (ID)',
     )
     group = django_filters.ModelMultipleChoiceFilter(
-        name='group__slug',
+        field_name='group__slug',
         queryset=RackGroup.objects.all(),
         to_field_name='slug',
         label='Group',
@@ -179,26 +181,34 @@ class RackFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='tenant__slug',
+        field_name='tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
     )
+    status = django_filters.MultipleChoiceFilter(
+        choices=RACK_STATUS_CHOICES,
+        null_value=None
+    )
     role_id = django_filters.ModelMultipleChoiceFilter(
         queryset=RackRole.objects.all(),
         label='Role (ID)',
     )
     role = django_filters.ModelMultipleChoiceFilter(
-        name='role__slug',
+        field_name='role__slug',
         queryset=RackRole.objects.all(),
         to_field_name='slug',
         label='Role (slug)',
     )
+    asset_tag = NullableCharFieldFilter()
     tag = TagFilter()
 
     class Meta:
         model = Rack
-        fields = ['name', 'serial', 'type', 'width', 'u_height', 'desc_units']
+        fields = [
+            'name', 'serial', 'asset_tag', 'type', 'width', 'u_height', 'desc_units', 'outer_width', 'outer_depth',
+            'outer_unit',
+        ]
 
     def search(self, queryset, name, value):
         if not value.strip():
@@ -207,12 +217,16 @@ class RackFilter(CustomFieldFilterSet, django_filters.FilterSet):
             Q(name__icontains=value) |
             Q(facility_id__icontains=value) |
             Q(serial__icontains=value.strip()) |
+            Q(asset_tag__icontains=value.strip()) |
             Q(comments__icontains=value)
         )
 
 
 class RackReservationFilter(django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
@@ -222,23 +236,23 @@ class RackReservationFilter(django_filters.FilterSet):
         label='Rack (ID)',
     )
     site_id = django_filters.ModelMultipleChoiceFilter(
-        name='rack__site',
+        field_name='rack__site',
         queryset=Site.objects.all(),
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='rack__site__slug',
+        field_name='rack__site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site (slug)',
     )
     group_id = django_filters.ModelMultipleChoiceFilter(
-        name='rack__group',
+        field_name='rack__group',
         queryset=RackGroup.objects.all(),
         label='Group (ID)',
     )
     group = django_filters.ModelMultipleChoiceFilter(
-        name='rack__group__slug',
+        field_name='rack__group__slug',
         queryset=RackGroup.objects.all(),
         to_field_name='slug',
         label='Group',
@@ -248,7 +262,7 @@ class RackReservationFilter(django_filters.FilterSet):
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='tenant__slug',
+        field_name='tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
@@ -258,7 +272,7 @@ class RackReservationFilter(django_filters.FilterSet):
         label='User (ID)',
     )
     user = django_filters.ModelMultipleChoiceFilter(
-        name='user',
+        field_name='user',
         queryset=User.objects.all(),
         to_field_name='username',
         label='User (name)',
@@ -286,8 +300,11 @@ class ManufacturerFilter(django_filters.FilterSet):
         fields = ['name', 'slug']
 
 
-class DeviceTypeFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+class DeviceTypeFilter(CustomFieldFilterSet):
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
@@ -297,18 +314,41 @@ class DeviceTypeFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Manufacturer (ID)',
     )
     manufacturer = django_filters.ModelMultipleChoiceFilter(
-        name='manufacturer__slug',
+        field_name='manufacturer__slug',
         queryset=Manufacturer.objects.all(),
         to_field_name='slug',
         label='Manufacturer (slug)',
     )
+    console_ports = django_filters.BooleanFilter(
+        method='_console_ports',
+        label='Has console ports',
+    )
+    console_server_ports = django_filters.BooleanFilter(
+        method='_console_server_ports',
+        label='Has console server ports',
+    )
+    power_ports = django_filters.BooleanFilter(
+        method='_power_ports',
+        label='Has power ports',
+    )
+    power_outlets = django_filters.BooleanFilter(
+        method='_power_outlets',
+        label='Has power outlets',
+    )
+    interfaces = django_filters.BooleanFilter(
+        method='_interfaces',
+        label='Has interfaces',
+    )
+    pass_through_ports = django_filters.BooleanFilter(
+        method='_pass_through_ports',
+        label='Has pass-through ports',
+    )
     tag = TagFilter()
 
     class Meta:
         model = DeviceType
         fields = [
-            'model', 'slug', 'part_number', 'u_height', 'is_full_depth', 'is_console_server', 'is_pdu',
-            'is_network_device', 'subdevice_role',
+            'model', 'slug', 'part_number', 'u_height', 'is_full_depth', 'subdevice_role',
         ]
 
     def search(self, queryset, name, value):
@@ -321,11 +361,32 @@ class DeviceTypeFilter(CustomFieldFilterSet, django_filters.FilterSet):
             Q(comments__icontains=value)
         )
 
+    def _console_ports(self, queryset, name, value):
+        return queryset.exclude(consoleport_templates__isnull=value)
+
+    def _console_server_ports(self, queryset, name, value):
+        return queryset.exclude(consoleserverport_templates__isnull=value)
+
+    def _power_ports(self, queryset, name, value):
+        return queryset.exclude(powerport_templates__isnull=value)
+
+    def _power_outlets(self, queryset, name, value):
+        return queryset.exclude(poweroutlet_templates__isnull=value)
+
+    def _interfaces(self, queryset, name, value):
+        return queryset.exclude(interface_templates__isnull=value)
+
+    def _pass_through_ports(self, queryset, name, value):
+        return queryset.exclude(
+            frontport_templates__isnull=value,
+            rearport_templates__isnull=value
+        )
+
 
 class DeviceTypeComponentFilterSet(django_filters.FilterSet):
     devicetype_id = django_filters.ModelMultipleChoiceFilter(
         queryset=DeviceType.objects.all(),
-        name='device_type_id',
+        field_name='device_type_id',
         label='Device type (ID)',
     )
 
@@ -365,6 +426,20 @@ class InterfaceTemplateFilter(DeviceTypeComponentFilterSet):
         fields = ['name', 'form_factor', 'mgmt_only']
 
 
+class FrontPortTemplateFilter(DeviceTypeComponentFilterSet):
+
+    class Meta:
+        model = FrontPortTemplate
+        fields = ['name', 'type']
+
+
+class RearPortTemplateFilter(DeviceTypeComponentFilterSet):
+
+    class Meta:
+        model = RearPortTemplate
+        fields = ['name', 'type']
+
+
 class DeviceBayTemplateFilter(DeviceTypeComponentFilterSet):
 
     class Meta:
@@ -381,12 +456,12 @@ class DeviceRoleFilter(django_filters.FilterSet):
 
 class PlatformFilter(django_filters.FilterSet):
     manufacturer_id = django_filters.ModelMultipleChoiceFilter(
-        name='manufacturer',
+        field_name='manufacturer',
         queryset=Manufacturer.objects.all(),
         label='Manufacturer (ID)',
     )
     manufacturer = django_filters.ModelMultipleChoiceFilter(
-        name='manufacturer__slug',
+        field_name='manufacturer__slug',
         queryset=Manufacturer.objects.all(),
         to_field_name='slug',
         label='Manufacturer (slug)',
@@ -397,19 +472,22 @@ class PlatformFilter(django_filters.FilterSet):
         fields = ['name', 'slug']
 
 
-class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
-    id__in = NumericInFilter(name='id', lookup_expr='in')
+class DeviceFilter(CustomFieldFilterSet):
+    id__in = NumericInFilter(
+        field_name='id',
+        lookup_expr='in'
+    )
     q = django_filters.CharFilter(
         method='search',
         label='Search',
     )
     manufacturer_id = django_filters.ModelMultipleChoiceFilter(
-        name='device_type__manufacturer',
+        field_name='device_type__manufacturer',
         queryset=Manufacturer.objects.all(),
         label='Manufacturer (ID)',
     )
     manufacturer = django_filters.ModelMultipleChoiceFilter(
-        name='device_type__manufacturer__slug',
+        field_name='device_type__manufacturer__slug',
         queryset=Manufacturer.objects.all(),
         to_field_name='slug',
         label='Manufacturer (slug)',
@@ -419,12 +497,12 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Device type (ID)',
     )
     role_id = django_filters.ModelMultipleChoiceFilter(
-        name='device_role_id',
+        field_name='device_role_id',
         queryset=DeviceRole.objects.all(),
         label='Role (ID)',
     )
     role = django_filters.ModelMultipleChoiceFilter(
-        name='device_role__slug',
+        field_name='device_role__slug',
         queryset=DeviceRole.objects.all(),
         to_field_name='slug',
         label='Role (slug)',
@@ -434,7 +512,7 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='tenant__slug',
+        field_name='tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
@@ -444,7 +522,7 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Platform (ID)',
     )
     platform = django_filters.ModelMultipleChoiceFilter(
-        name='platform__slug',
+        field_name='platform__slug',
         queryset=Platform.objects.all(),
         to_field_name='slug',
         label='Platform (slug)',
@@ -453,12 +531,12 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
     asset_tag = NullableCharFieldFilter()
     region_id = django_filters.NumberFilter(
         method='filter_region',
-        name='pk',
+        field_name='pk',
         label='Region (ID)',
     )
     region = django_filters.CharFilter(
         method='filter_region',
-        name='slug',
+        field_name='slug',
         label='Region (slug)',
     )
     site_id = django_filters.ModelMultipleChoiceFilter(
@@ -466,18 +544,18 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='site__slug',
+        field_name='site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site name (slug)',
     )
     rack_group_id = django_filters.ModelMultipleChoiceFilter(
-        name='rack__group',
+        field_name='rack__group',
         queryset=RackGroup.objects.all(),
         label='Rack group (ID)',
     )
     rack_id = django_filters.ModelMultipleChoiceFilter(
-        name='rack',
+        field_name='rack',
         queryset=Rack.objects.all(),
         label='Rack (ID)',
     )
@@ -486,7 +564,7 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='VM cluster (ID)',
     )
     model = django_filters.ModelMultipleChoiceFilter(
-        name='device_type__slug',
+        field_name='device_type__slug',
         queryset=DeviceType.objects.all(),
         to_field_name='slug',
         label='Device model (slug)',
@@ -496,21 +574,9 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         null_value=None
     )
     is_full_depth = django_filters.BooleanFilter(
-        name='device_type__is_full_depth',
+        field_name='device_type__is_full_depth',
         label='Is full depth',
     )
-    is_console_server = django_filters.BooleanFilter(
-        name='device_type__is_console_server',
-        label='Is a console server',
-    )
-    is_pdu = django_filters.BooleanFilter(
-        name='device_type__is_pdu',
-        label='Is a PDU',
-    )
-    is_network_device = django_filters.BooleanFilter(
-        name='device_type__is_network_device',
-        label='Is a network device',
-    )
     mac_address = django_filters.CharFilter(
         method='_mac_address',
         label='MAC address',
@@ -520,10 +586,34 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
         label='Has a primary IP',
     )
     virtual_chassis_id = django_filters.ModelMultipleChoiceFilter(
-        name='virtual_chassis',
+        field_name='virtual_chassis',
         queryset=VirtualChassis.objects.all(),
         label='Virtual chassis (ID)',
     )
+    console_ports = django_filters.BooleanFilter(
+        method='_console_ports',
+        label='Has console ports',
+    )
+    console_server_ports = django_filters.BooleanFilter(
+        method='_console_server_ports',
+        label='Has console server ports',
+    )
+    power_ports = django_filters.BooleanFilter(
+        method='_power_ports',
+        label='Has power ports',
+    )
+    power_outlets = django_filters.BooleanFilter(
+        method='_power_outlets',
+        label='Has power outlets',
+    )
+    interfaces = django_filters.BooleanFilter(
+        method='_interfaces',
+        label='Has interfaces',
+    )
+    pass_through_ports = django_filters.BooleanFilter(
+        method='_pass_through_ports',
+        label='Has pass-through ports',
+    )
     tag = TagFilter()
 
     class Meta:
@@ -573,6 +663,27 @@ class DeviceFilter(CustomFieldFilterSet, django_filters.FilterSet):
                 Q(primary_ip6__isnull=False)
             )
 
+    def _console_ports(self, queryset, name, value):
+        return queryset.exclude(consoleports__isnull=value)
+
+    def _console_server_ports(self, queryset, name, value):
+        return queryset.exclude(consoleserverports__isnull=value)
+
+    def _power_ports(self, queryset, name, value):
+        return queryset.exclude(powerports__isnull=value)
+
+    def _power_outlets(self, queryset, name, value):
+        return queryset.exclude(poweroutlets_isnull=value)
+
+    def _interfaces(self, queryset, name, value):
+        return queryset.exclude(interfaces__isnull=value)
+
+    def _pass_through_ports(self, queryset, name, value):
+        return queryset.exclude(
+            frontports__isnull=value,
+            rearports__isnull=value
+        )
+
 
 class DeviceComponentFilterSet(django_filters.FilterSet):
     device_id = django_filters.ModelChoiceFilter(
@@ -588,54 +699,78 @@ class DeviceComponentFilterSet(django_filters.FilterSet):
 
 
 class ConsolePortFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
 
     class Meta:
         model = ConsolePort
-        fields = ['name']
+        fields = ['name', 'connection_status']
 
 
 class ConsoleServerPortFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
 
     class Meta:
         model = ConsoleServerPort
-        fields = ['name']
+        fields = ['name', 'connection_status']
 
 
 class PowerPortFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
 
     class Meta:
         model = PowerPort
-        fields = ['name']
+        fields = ['name', 'connection_status']
 
 
 class PowerOutletFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
 
     class Meta:
         model = PowerOutlet
-        fields = ['name']
+        fields = ['name', 'connection_status']
 
 
 class InterfaceFilter(django_filters.FilterSet):
     """
-    Not using DeviceComponentFilterSet for Interfaces because we need to glean the ordering logic from the parent
-    Device's DeviceType.
+    Not using DeviceComponentFilterSet for Interfaces because we need to check for VirtualChassis membership.
     """
     device = django_filters.CharFilter(
         method='filter_device',
-        name='name',
+        field_name='name',
         label='Device',
     )
     device_id = django_filters.NumberFilter(
         method='filter_device',
-        name='pk',
+        field_name='pk',
         label='Device (ID)',
     )
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
     type = django_filters.CharFilter(
         method='filter_type',
         label='Interface type',
     )
     lag_id = django_filters.ModelMultipleChoiceFilter(
-        name='lag',
+        field_name='lag',
         queryset=Interface.objects.all(),
         label='LAG interface (ID)',
     )
@@ -659,14 +794,13 @@ class InterfaceFilter(django_filters.FilterSet):
 
     class Meta:
         model = Interface
-        fields = ['name', 'enabled', 'mtu', 'mgmt_only']
+        fields = ['name', 'connection_status', 'form_factor', 'enabled', 'mtu', 'mgmt_only']
 
     def filter_device(self, queryset, name, value):
         try:
-            device = Device.objects.select_related('device_type').get(**{name: value})
-            vc_interface_ids = [i['id'] for i in device.vc_interfaces.values('id')]
-            ordering = device.device_type.interface_ordering
-            return queryset.filter(pk__in=vc_interface_ids).order_naturally(ordering)
+            device = Device.objects.get(**{name: value})
+            vc_interface_ids = device.vc_interfaces.values_list('id', flat=True)
+            return queryset.filter(pk__in=vc_interface_ids)
         except Device.DoesNotExist:
             return queryset.none()
 
@@ -708,6 +842,30 @@ class InterfaceFilter(django_filters.FilterSet):
             return queryset.none()
 
 
+class FrontPortFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
+
+    class Meta:
+        model = FrontPort
+        fields = ['name', 'type']
+
+
+class RearPortFilter(DeviceComponentFilterSet):
+    cabled = django_filters.BooleanFilter(
+        field_name='cable',
+        lookup_expr='isnull',
+        exclude=True
+    )
+
+    class Meta:
+        model = RearPort
+        fields = ['name', 'type']
+
+
 class DeviceBayFilter(DeviceComponentFilterSet):
 
     class Meta:
@@ -738,7 +896,7 @@ class InventoryItemFilter(DeviceComponentFilterSet):
         label='Manufacturer (ID)',
     )
     manufacturer = django_filters.ModelMultipleChoiceFilter(
-        name='manufacturer__slug',
+        field_name='manufacturer__slug',
         queryset=Manufacturer.objects.all(),
         to_field_name='slug',
         label='Manufacturer (slug)',
@@ -768,23 +926,23 @@ class VirtualChassisFilter(django_filters.FilterSet):
         label='Search',
     )
     site_id = django_filters.ModelMultipleChoiceFilter(
-        name='master__site',
+        field_name='master__site',
         queryset=Site.objects.all(),
         label='Site (ID)',
     )
     site = django_filters.ModelMultipleChoiceFilter(
-        name='master__site__slug',
+        field_name='master__site__slug',
         queryset=Site.objects.all(),
         to_field_name='slug',
         label='Site name (slug)',
     )
     tenant_id = django_filters.ModelMultipleChoiceFilter(
-        name='master__tenant',
+        field_name='master__tenant',
         queryset=Tenant.objects.all(),
         label='Tenant (ID)',
     )
     tenant = django_filters.ModelMultipleChoiceFilter(
-        name='master__tenant__slug',
+        field_name='master__tenant__slug',
         queryset=Tenant.objects.all(),
         to_field_name='slug',
         label='Tenant (slug)',
@@ -805,6 +963,28 @@ class VirtualChassisFilter(django_filters.FilterSet):
         return queryset.filter(qs_filter)
 
 
+class CableFilter(django_filters.FilterSet):
+    q = django_filters.CharFilter(
+        method='search',
+        label='Search',
+    )
+    type = django_filters.MultipleChoiceFilter(
+        choices=CABLE_TYPE_CHOICES
+    )
+    color = django_filters.MultipleChoiceFilter(
+        choices=COLOR_CHOICES
+    )
+
+    class Meta:
+        model = Cable
+        fields = ['type', 'status', 'color', 'length', 'length_unit']
+
+    def search(self, queryset, name, value):
+        if not value.strip():
+            return queryset
+        return queryset.filter(label__icontains=value)
+
+
 class ConsoleConnectionFilter(django_filters.FilterSet):
     site = django_filters.CharFilter(
         method='filter_site',
@@ -822,14 +1002,14 @@ class ConsoleConnectionFilter(django_filters.FilterSet):
     def filter_site(self, queryset, name, value):
         if not value.strip():
             return queryset
-        return queryset.filter(cs_port__device__site__slug=value)
+        return queryset.filter(connected_endpoint__device__site__slug=value)
 
     def filter_device(self, queryset, name, value):
         if not value.strip():
             return queryset
         return queryset.filter(
             Q(device__name__icontains=value) |
-            Q(cs_port__device__name__icontains=value)
+            Q(connected_endpoint__device__name__icontains=value)
         )
 
 
@@ -850,14 +1030,14 @@ class PowerConnectionFilter(django_filters.FilterSet):
     def filter_site(self, queryset, name, value):
         if not value.strip():
             return queryset
-        return queryset.filter(power_outlet__device__site__slug=value)
+        return queryset.filter(connected_endpoint__device__site__slug=value)
 
     def filter_device(self, queryset, name, value):
         if not value.strip():
             return queryset
         return queryset.filter(
             Q(device__name__icontains=value) |
-            Q(power_outlet__device__name__icontains=value)
+            Q(connected_endpoint__device__name__icontains=value)
         )
 
 
@@ -872,21 +1052,21 @@ class InterfaceConnectionFilter(django_filters.FilterSet):
     )
 
     class Meta:
-        model = InterfaceConnection
+        model = Interface
         fields = ['connection_status']
 
     def filter_site(self, queryset, name, value):
         if not value.strip():
             return queryset
         return queryset.filter(
-            Q(interface_a__device__site__slug=value) |
-            Q(interface_b__device__site__slug=value)
+            Q(device__site__slug=value) |
+            Q(_connected_interface__device__site__slug=value)
         )
 
     def filter_device(self, queryset, name, value):
         if not value.strip():
             return queryset
         return queryset.filter(
-            Q(interface_a__device__name__icontains=value) |
-            Q(interface_b__device__name__icontains=value)
+            Q(device__name__icontains=value) |
+            Q(_connected_interface__device__name__icontains=value)
         )

netbox/dcim/fixtures/dcim.json

@@ -76,10 +76,7 @@
         "model": "MX960",
         "slug": "mx960",
         "u_height": 16,
-        "is_full_depth": true,
-        "is_console_server": false,
-        "is_pdu": false,
-        "is_network_device": true
+        "is_full_depth": true
     }
 },
 {
@@ -92,10 +89,7 @@
         "model": "EX9214",
         "slug": "ex9214",
         "u_height": 16,
-        "is_full_depth": true,
-        "is_console_server": false,
-        "is_pdu": false,
-        "is_network_device": true
+        "is_full_depth": true
     }
 },
 {
@@ -108,10 +102,7 @@
         "model": "QFX5100-24Q",
         "slug": "qfx5100-24q",
         "u_height": 1,
-        "is_full_depth": true,
-        "is_console_server": false,
-        "is_pdu": false,
-        "is_network_device": true
+        "is_full_depth": true
     }
 },
 {
@@ -124,10 +115,7 @@
         "model": "QFX5100-48S",
         "slug": "qfx5100-48s",
         "u_height": 1,
-        "is_full_depth": true,
-        "is_console_server": false,
-        "is_pdu": false,
-        "is_network_device": true
+        "is_full_depth": true
     }
 },
 {
@@ -140,10 +128,7 @@
         "model": "CM4148",
         "slug": "cm4148",
         "u_height": 1,
-        "is_full_depth": true,
-        "is_console_server": true,
-        "is_pdu": false,
-        "is_network_device": false
+        "is_full_depth": true
     }
 },
 {
@@ -156,10 +141,7 @@
         "model": "CWG-24VYM415C9",
         "slug": "cwg-24vym415c9",
         "u_height": 0,
-        "is_full_depth": false,
-        "is_console_server": false,
-        "is_pdu": true,
-        "is_network_device": false
+        "is_full_depth": false
     }
 },
 {
@@ -1903,8 +1885,7 @@
     "pk": 1,
     "fields": {
         "name": "Juniper Junos",
-        "slug": "juniper-junos",
-        "rpc_client": "juniper-junos"
+        "slug": "juniper-junos"
     }
 },
 {
@@ -1912,8 +1893,7 @@
     "pk": 2,
     "fields": {
         "name": "Opengear",
-        "slug": "opengear",
-        "rpc_client": "opengear"
+        "slug": "opengear"
     }
 },
 {
@@ -2153,7 +2133,7 @@
     "fields": {
         "device": 1,
         "name": "Console (RE0)",
-        "cs_port": 27,
+        "connected_endpoint": 27,
         "connection_status": true
     }
 },
@@ -2163,7 +2143,7 @@
     "fields": {
         "device": 1,
         "name": "Console (RE1)",
-        "cs_port": 38,
+        "connected_endpoint": 38,
         "connection_status": true
     }
 },
@@ -2173,7 +2153,7 @@
     "fields": {
         "device": 2,
         "name": "Console (RE0)",
-        "cs_port": 5,
+        "connected_endpoint": 5,
         "connection_status": true
     }
 },
@@ -2183,7 +2163,7 @@
     "fields": {
         "device": 2,
         "name": "Console (RE1)",
-        "cs_port": 16,
+        "connected_endpoint": 16,
         "connection_status": true
     }
 },
@@ -2193,7 +2173,7 @@
     "fields": {
         "device": 3,
         "name": "Console",
-        "cs_port": 49,
+        "connected_endpoint": 49,
         "connection_status": true
     }
 },
@@ -2203,7 +2183,7 @@
     "fields": {
         "device": 4,
         "name": "Console",
-        "cs_port": 48,
+        "connected_endpoint": 48,
         "connection_status": true
     }
 },
@@ -2213,7 +2193,7 @@
     "fields": {
         "device": 5,
         "name": "Console",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2223,7 +2203,7 @@
     "fields": {
         "device": 6,
         "name": "Console",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2233,7 +2213,7 @@
     "fields": {
         "device": 7,
         "name": "Console (RE0)",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2243,7 +2223,7 @@
     "fields": {
         "device": 7,
         "name": "Console (RE1)",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2253,7 +2233,7 @@
     "fields": {
         "device": 8,
         "name": "Console (RE0)",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2263,7 +2243,7 @@
     "fields": {
         "device": 8,
         "name": "Console (RE1)",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2273,7 +2253,7 @@
     "fields": {
         "device": 9,
         "name": "Console",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2283,7 +2263,7 @@
     "fields": {
         "device": 11,
         "name": "Serial",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2293,7 +2273,7 @@
     "fields": {
         "device": 12,
         "name": "Serial",
-        "cs_port": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2687,7 +2667,7 @@
     "fields": {
         "device": 1,
         "name": "PEM0",
-        "power_outlet": 25,
+        "connected_endpoint": 25,
         "connection_status": true
     }
 },
@@ -2697,7 +2677,7 @@
     "fields": {
         "device": 1,
         "name": "PEM1",
-        "power_outlet": 49,
+        "connected_endpoint": 49,
         "connection_status": true
     }
 },
@@ -2707,7 +2687,7 @@
     "fields": {
         "device": 1,
         "name": "PEM2",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2717,7 +2697,7 @@
     "fields": {
         "device": 1,
         "name": "PEM3",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2727,7 +2707,7 @@
     "fields": {
         "device": 2,
         "name": "PEM0",
-        "power_outlet": 26,
+        "connected_endpoint": 26,
         "connection_status": true
     }
 },
@@ -2737,7 +2717,7 @@
     "fields": {
         "device": 2,
         "name": "PEM1",
-        "power_outlet": 50,
+        "connected_endpoint": 50,
         "connection_status": true
     }
 },
@@ -2747,7 +2727,7 @@
     "fields": {
         "device": 2,
         "name": "PEM2",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2757,7 +2737,7 @@
     "fields": {
         "device": 2,
         "name": "PEM3",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2767,7 +2747,7 @@
     "fields": {
         "device": 4,
         "name": "PSU0",
-        "power_outlet": 28,
+        "connected_endpoint": 28,
         "connection_status": true
     }
 },
@@ -2777,7 +2757,7 @@
     "fields": {
         "device": 4,
         "name": "PSU1",
-        "power_outlet": 52,
+        "connected_endpoint": 52,
         "connection_status": true
     }
 },
@@ -2787,7 +2767,7 @@
     "fields": {
         "device": 5,
         "name": "PSU0",
-        "power_outlet": 56,
+        "connected_endpoint": 56,
         "connection_status": true
     }
 },
@@ -2797,7 +2777,7 @@
     "fields": {
         "device": 5,
         "name": "PSU1",
-        "power_outlet": 32,
+        "connected_endpoint": 32,
         "connection_status": true
     }
 },
@@ -2807,7 +2787,7 @@
     "fields": {
         "device": 3,
         "name": "PSU0",
-        "power_outlet": 27,
+        "connected_endpoint": 27,
         "connection_status": true
     }
 },
@@ -2817,7 +2797,7 @@
     "fields": {
         "device": 3,
         "name": "PSU1",
-        "power_outlet": 51,
+        "connected_endpoint": 51,
         "connection_status": true
     }
 },
@@ -2827,7 +2807,7 @@
     "fields": {
         "device": 7,
         "name": "PEM0",
-        "power_outlet": 53,
+        "connected_endpoint": 53,
         "connection_status": true
     }
 },
@@ -2837,7 +2817,7 @@
     "fields": {
         "device": 7,
         "name": "PEM1",
-        "power_outlet": 29,
+        "connected_endpoint": 29,
         "connection_status": true
     }
 },
@@ -2847,7 +2827,7 @@
     "fields": {
         "device": 7,
         "name": "PEM2",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2857,7 +2837,7 @@
     "fields": {
         "device": 7,
         "name": "PEM3",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2867,7 +2847,7 @@
     "fields": {
         "device": 8,
         "name": "PEM0",
-        "power_outlet": 54,
+        "connected_endpoint": 54,
         "connection_status": true
     }
 },
@@ -2877,7 +2857,7 @@
     "fields": {
         "device": 8,
         "name": "PEM1",
-        "power_outlet": 30,
+        "connected_endpoint": 30,
         "connection_status": true
     }
 },
@@ -2887,7 +2867,7 @@
     "fields": {
         "device": 8,
         "name": "PEM2",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2897,7 +2877,7 @@
     "fields": {
         "device": 8,
         "name": "PEM3",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -2907,7 +2887,7 @@
     "fields": {
         "device": 6,
         "name": "PSU0",
-        "power_outlet": 55,
+        "connected_endpoint": 55,
         "connection_status": true
     }
 },
@@ -2917,7 +2897,7 @@
     "fields": {
         "device": 6,
         "name": "PSU1",
-        "power_outlet": 31,
+        "connected_endpoint": 31,
         "connection_status": true
     }
 },
@@ -2927,7 +2907,7 @@
     "fields": {
         "device": 9,
         "name": "PSU",
-        "power_outlet": null,
+        "connected_endpoint": null,
         "connection_status": true
     }
 },
@@ -5748,158 +5728,5 @@
         "mgmt_only": true,
         "description": ""
     }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 3,
-    "fields": {
-        "interface_a": 99,
-        "interface_b": 15,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 4,
-    "fields": {
-        "interface_a": 100,
-        "interface_b": 153,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 5,
-    "fields": {
-        "interface_a": 46,
-        "interface_b": 14,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 6,
-    "fields": {
-        "interface_a": 47,
-        "interface_b": 152,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 7,
-    "fields": {
-        "interface_a": 91,
-        "interface_b": 144,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 8,
-    "fields": {
-        "interface_a": 92,
-        "interface_b": 145,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 16,
-    "fields": {
-        "interface_a": 189,
-        "interface_b": 37,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 17,
-    "fields": {
-        "interface_a": 192,
-        "interface_b": 175,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 18,
-    "fields": {
-        "interface_a": 195,
-        "interface_b": 41,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 19,
-    "fields": {
-        "interface_a": 198,
-        "interface_b": 179,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 20,
-    "fields": {
-        "interface_a": 191,
-        "interface_b": 197,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 21,
-    "fields": {
-        "interface_a": 194,
-        "interface_b": 200,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 22,
-    "fields": {
-        "interface_a": 9,
-        "interface_b": 218,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 23,
-    "fields": {
-        "interface_a": 8,
-        "interface_b": 206,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 24,
-    "fields": {
-        "interface_a": 7,
-        "interface_b": 212,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 25,
-    "fields": {
-        "interface_a": 217,
-        "interface_b": 205,
-        "connection_status": true
-    }
-},
-{
-    "model": "dcim.interfaceconnection",
-    "pk": 26,
-    "fields": {
-        "interface_a": 216,
-        "interface_b": 211,
-        "connection_status": true
-    }
 }
 ]

netbox/dcim/fixtures/initial_data.json

@@ -149,8 +149,7 @@
     "pk": 1,
     "fields": {
         "name": "Cisco IOS",
-        "slug": "cisco-ios",
-        "rpc_client": "cisco-ios"
+        "slug": "cisco-ios"
     }
 },
 {
@@ -158,8 +157,7 @@
     "pk": 2,
     "fields": {
         "name": "Cisco NX-OS",
-        "slug": "cisco-nx-os",
-        "rpc_client": ""
+        "slug": "cisco-nx-os"
     }
 },
 {
@@ -167,8 +165,7 @@
     "pk": 3,
     "fields": {
         "name": "Juniper Junos",
-        "slug": "juniper-junos",
-        "rpc_client": "juniper-junos"
+        "slug": "juniper-junos"
     }
 },
 {
@@ -176,8 +173,7 @@
     "pk": 4,
     "fields": {
         "name": "Arista EOS",
-        "slug": "arista-eos",
-        "rpc_client": ""
+        "slug": "arista-eos"
     }
 },
 {
@@ -185,8 +181,7 @@
     "pk": 5,
     "fields": {
         "name": "Linux",
-        "slug": "linux",
-        "rpc_client": ""
+        "slug": "linux"
     }
 },
 {
@@ -194,8 +189,7 @@
     "pk": 6,
     "fields": {
         "name": "Opengear",
-        "slug": "opengear",
-        "rpc_client": "opengear"
+        "slug": "opengear"
     }
 }
 ]

netbox/dcim/managers.py

@@ -0,0 +1,85 @@
+from django.db.models import Manager, QuerySet
+from django.db.models.expressions import RawSQL
+
+from .constants import NONCONNECTABLE_IFACE_TYPES
+
+# Regular expressions for parsing Interface names
+TYPE_RE = r"SUBSTRING({} FROM '^([^0-9\.:]+)')"
+SLOT_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^(?:[^0-9]+)?(\d{{1,9}})/') AS integer), NULL)"
+SUBSLOT_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^(?:[^0-9\.:]+)?\d{{1,9}}/(\d{{1,9}})') AS integer), NULL)"
+POSITION_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^(?:[^0-9]+)?(?:\d{{1,9}}/){{2}}(\d{{1,9}})') AS integer), NULL)"
+SUBPOSITION_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^(?:[^0-9]+)?(?:\d{{1,9}}/){{3}}(\d{{1,9}})') AS integer), NULL)"
+ID_RE = r"CAST(SUBSTRING({} FROM '^(?:[^0-9\.:]+)?(\d{{1,9}})([^/]|$)') AS integer)"
+CHANNEL_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^.*:(\d{{1,9}})(\.\d{{1,9}})?$') AS integer), 0)"
+VC_RE = r"COALESCE(CAST(SUBSTRING({} FROM '^.*\.(\d{{1,9}})$') AS integer), 0)"
+
+
+class DeviceComponentManager(Manager):
+
+    def get_queryset(self):
+
+        queryset = super().get_queryset()
+        table_name = self.model._meta.db_table
+        sql = r"CONCAT(REGEXP_REPLACE({}.name, '\d+$', ''), LPAD(SUBSTRING({}.name FROM '\d+$'), 8, '0'))"
+
+        # Pad any trailing digits to effect natural sorting
+        return queryset.extra(
+            select={
+                'name_padded': sql.format(table_name, table_name),
+            }
+        ).order_by('name_padded')
+
+
+class InterfaceQuerySet(QuerySet):
+
+    def connectable(self):
+        """
+        Return only physical interfaces which are capable of being connected to other interfaces (i.e. not virtual or
+        wireless).
+        """
+        return self.exclude(form_factor__in=NONCONNECTABLE_IFACE_TYPES)
+
+
+class InterfaceManager(Manager):
+
+    def get_queryset(self):
+        """
+        Naturally order interfaces by their type and numeric position. To order interfaces naturally, the `name` field
+        is split into eight distinct components: leading text (type), slot, subslot, position, subposition, ID, channel,
+        and virtual circuit:
+
+            {type}{slot or ID}/{subslot}/{position}/{subposition}:{channel}.{vc}
+
+        Components absent from the interface name are coalesced to zero or null. For example, an interface named
+        GigabitEthernet1/2/3 would be parsed as follows:
+
+            type = 'GigabitEthernet'
+            slot =  1
+            subslot = 2
+            position = 3
+            subposition = None
+            id = None
+            channel = 0
+            vc = 0
+
+        The original `name` field is considered in its entirety to serve as a fallback in the event interfaces do not
+        match any of the prescribed fields.
+        """
+
+        sql_col = '{}.name'.format(self.model._meta.db_table)
+        ordering = [
+            '_slot', '_subslot', '_position', '_subposition', '_type', '_id', '_channel', '_vc', 'name',
+        ]
+
+        fields = {
+            '_type': RawSQL(TYPE_RE.format(sql_col), []),
+            '_id': RawSQL(ID_RE.format(sql_col), []),
+            '_slot': RawSQL(SLOT_RE.format(sql_col), []),
+            '_subslot': RawSQL(SUBSLOT_RE.format(sql_col), []),
+            '_position': RawSQL(POSITION_RE.format(sql_col), []),
+            '_subposition': RawSQL(SUBPOSITION_RE.format(sql_col), []),
+            '_channel': RawSQL(CHANNEL_RE.format(sql_col), []),
+            '_vc': RawSQL(VC_RE.format(sql_col), []),
+        }
+
+        return InterfaceQuerySet(self.model, using=self._db).annotate(**fields).order_by(*ordering)

netbox/dcim/migrations/0001_initial.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-06-22 18:21
-from __future__ import unicode_literals
-
 import django.core.validators
 from django.db import migrations, models
 import django.db.models.deletion

netbox/dcim/migrations/0002_auto_20160622_1821.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-06-22 18:21
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0002_auto_20160622_1821_squashed_0022_color_names_to_rgb.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-31 02:06
-from __future__ import unicode_literals
-
 import dcim.fields
 import django.core.validators
 from django.db import migrations, models

netbox/dcim/migrations/0003_auto_20160628_1721.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-06-28 17:21
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0004_auto_20160701_2049.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-01 20:49
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0005_auto_20160706_1722.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-06 17:22
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.db import migrations, models
 

netbox/dcim/migrations/0006_add_device_primary_ip4_ip6.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-11 18:40
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0007_device_copy_primary_ip.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-11 18:40
-from __future__ import unicode_literals
-
 from django.db import migrations
 
 

netbox/dcim/migrations/0008_device_remove_primary_ip.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-11 19:01
-from __future__ import unicode_literals
-
 from django.db import migrations
 
 

netbox/dcim/migrations/0009_site_32bit_asn_support.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-13 19:24
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.db import migrations
 

netbox/dcim/migrations/0010_devicebay_installed_device_set_null.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.7 on 2016-07-14 21:38
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0011_devicetype_part_number.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-07-26 15:05
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0012_site_rack_device_add_tenant.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-07-26 21:59
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0013_add_interface_form_factors.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-06 20:24
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0014_rack_add_type_width.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-08 21:11
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0015_rack_add_u_height_validator.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-09 21:18
-from __future__ import unicode_literals
-
 import django.core.validators
 from django.db import migrations, models
 

netbox/dcim/migrations/0016_module_add_manufacturer.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-10 13:45
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0017_rack_add_role.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.9.8 on 2016-08-10 14:58
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0018_device_add_asset_tag.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-08-11 15:42
-from __future__ import unicode_literals
-
 from django.db import migrations
 import utilities.fields
 

netbox/dcim/migrations/0019_new_iface_form_factors.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-09-13 15:20
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0020_rack_desc_units.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-10-28 15:01
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0021_add_ff_flexstack.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-10-31 18:47
-from __future__ import unicode_literals
-
 import django.core.validators
 from django.db import migrations, models
 

netbox/dcim/migrations/0022_color_names_to_rgb.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-12-06 16:35
-from __future__ import unicode_literals
-
 from django.db import migrations
 import utilities.fields
 

netbox/dcim/migrations/0023_devicetype_comments.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10 on 2016-12-16 16:08
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0023_devicetype_comments_squashed_0043_device_component_name_lengths.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-31 02:13
-from __future__ import unicode_literals
-
 import dcim.fields
 from django.conf import settings
 import django.contrib.postgres.fields

netbox/dcim/migrations/0024_site_add_contact_fields.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2016-12-29 16:23
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0025_devicetype_add_interface_ordering.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-01-06 16:56
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0026_add_rack_reservations.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-16 18:43
-from __future__ import unicode_literals
-
 from django.conf import settings
 import django.contrib.postgres.fields
 from django.db import migrations, models

netbox/dcim/migrations/0027_device_add_site.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-16 21:21
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0028_device_copy_rack_to_site.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-16 21:23
-from __future__ import unicode_literals
-
 from django.db import migrations
 
 

netbox/dcim/migrations/0029_allow_rackless_devices.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-16 21:25
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0030_interface_add_lag.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-27 19:55
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0031_regions.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-02-28 17:14
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 import mptt.fields

netbox/dcim/migrations/0032_device_increase_name_length.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.4 on 2017-03-02 15:09
-from __future__ import unicode_literals
-
 from django.db import migrations
 import utilities.fields
 

netbox/dcim/migrations/0033_rackreservation_rack_editable.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.6 on 2017-03-17 18:39
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0034_rename_module_to_inventoryitem.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.6 on 2017-03-21 14:55
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0035_device_expand_status_choices.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.10.7 on 2017-05-08 15:57
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0036_add_ff_juniper_vcp.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.1 on 2017-05-09 16:00
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0037_unicode_literals.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11 on 2017-05-24 15:34
-from __future__ import unicode_literals
-
 import dcim.fields
 import django.core.validators
 from django.db import migrations, models

netbox/dcim/migrations/0038_wireless_interfaces.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.1 on 2017-06-16 21:38
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0039_interface_add_enabled_mtu.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.1 on 2017-06-23 17:05
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0040_inventoryitem_add_asset_tag_description.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11 on 2017-06-23 20:44
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import utilities.fields
 

netbox/dcim/migrations/0041_napalm_integration.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.3 on 2017-07-14 17:26
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0042_interface_ff_10ge_cx4.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.4 on 2017-08-29 21:00
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0043_device_component_name_lengths.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.4 on 2017-08-29 21:26
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0044_virtualization.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.4 on 2017-08-31 14:15
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 import django.db.models.deletion
 

netbox/dcim/migrations/0044_virtualization_squashed_0055_virtualchassis_ordering.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-31 02:17
-from __future__ import unicode_literals
-
 from django.conf import settings
 import django.core.validators
 from django.db import migrations, models

netbox/dcim/migrations/0045_devicerole_vm_role.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.4 on 2017-09-29 16:09
-from __future__ import unicode_literals
-
 from django.db import migrations, models
 
 

netbox/dcim/migrations/0046_rack_lengthen_facility_id.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.4 on 2017-10-09 17:43
-from __future__ import unicode_literals
-
 from django.db import migrations
 import utilities.fields