Closes #5307: Add a region selector for every site form field

netbox/circuits/forms.py

@@ -303,14 +303,24 @@ class CircuitFilterForm(BootstrapMixin, TenancyFilterForm, CustomFieldFilterForm
 #
 
 class CircuitTerminationForm(BootstrapMixin, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
-        queryset=Site.objects.all()
+        queryset=Site.objects.all(),
+        query_params={
+            'region_id': '$region'
+        }
     )
 
     class Meta:
         model = CircuitTermination
         fields = [
-            'term_side', 'site', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info', 'description',
+            'term_side', 'region', 'site', 'port_speed', 'upstream_speed', 'xconnect_id', 'pp_info', 'description',
         ]
         help_texts = {
             'port_speed': "Physical circuit speed",

netbox/dcim/forms.py

@@ -352,8 +352,18 @@ class SiteFilterForm(BootstrapMixin, TenancyFilterForm, CustomFieldFilterForm):
 #
 
 class RackGroupForm(BootstrapMixin, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
-        queryset=Site.objects.all()
+        queryset=Site.objects.all(),
+        query_params={
+            'region_id': '$region'
+        }
     )
     parent = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -367,7 +377,7 @@ class RackGroupForm(BootstrapMixin, forms.ModelForm):
     class Meta:
         model = RackGroup
         fields = (
-            'site', 'parent', 'name', 'slug', 'description',
+            'region', 'site', 'parent', 'name', 'slug', 'description',
         )
 
 
@@ -447,14 +457,17 @@ class RackRoleCSVForm(CSVModelForm):
 #
 
 class RackForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
-    site = DynamicModelChoiceField(
-        queryset=Site.objects.all()
-    )
-    group = DynamicModelChoiceField(
-        queryset=RackGroup.objects.all(),
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
         required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
+    site = DynamicModelChoiceField(
+        queryset=Site.objects.all(),
         query_params={
-            'site_id': '$site'
+            'region_id': '$region'
         }
     )
     role = DynamicModelChoiceField(
@@ -470,8 +483,9 @@ class RackForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
     class Meta:
         model = Rack
         fields = [
-            'site', 'group', 'name', 'facility_id', 'tenant_group', 'tenant', 'status', 'role', 'serial', 'asset_tag',
-            'type', 'width', 'u_height', 'desc_units', 'outer_width', 'outer_depth', 'outer_unit', 'comments', 'tags',
+            'region', 'site', 'group', 'name', 'facility_id', 'tenant_group', 'tenant', 'status', 'role', 'serial',
+            'asset_tag', 'type', 'width', 'u_height', 'desc_units', 'outer_width', 'outer_depth', 'outer_unit',
+            'comments', 'tags',
         ]
         help_texts = {
             'site': "The site at which the rack exists",
@@ -548,9 +562,19 @@ class RackBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditFor
         queryset=Rack.objects.all(),
         widget=forms.MultipleHiddenInput
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     group = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -691,9 +715,19 @@ class RackElevationFilterForm(RackFilterForm):
 #
 
 class RackReservationForm(BootstrapMixin, TenancyForm, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     rack_group = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -707,7 +741,7 @@ class RackReservationForm(BootstrapMixin, TenancyForm, forms.ModelForm):
         display_field='display_name',
         query_params={
             'site_id': '$site',
-            'group_id': 'rack',
+            'group_id': '$rack',
         }
     )
     units = NumericArrayField(
@@ -809,15 +843,23 @@ class RackReservationBulkEditForm(BootstrapMixin, AddRemoveTagsForm, BulkEditFor
 
 class RackReservationFilterForm(BootstrapMixin, TenancyFilterForm):
     model = RackReservation
-    field_order = ['q', 'site', 'group_id', 'tenant_group', 'tenant']
+    field_order = ['q', 'region', 'site', 'group_id', 'tenant_group', 'tenant']
     q = forms.CharField(
         required=False,
         label='Search'
     )
+    region = DynamicModelMultipleChoiceField(
+        queryset=Region.objects.all(),
+        to_field_name='slug',
+        required=False
+    )
     site = DynamicModelMultipleChoiceField(
         queryset=Site.objects.all(),
         to_field_name='slug',
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     group_id = DynamicModelMultipleChoiceField(
         queryset=RackGroup.objects.prefetch_related('site'),
@@ -3417,10 +3459,18 @@ class ConnectCableToDeviceForm(BootstrapMixin, forms.ModelForm):
     """
     Base form for connecting a Cable to a Device component
     """
+    termination_b_region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        label='Region',
+        required=False
+    )
     termination_b_site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         label='Site',
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$termination_b_region'
+        }
     )
     termination_b_rack = DynamicModelChoiceField(
         queryset=Rack.objects.all(),
@@ -3446,8 +3496,8 @@ class ConnectCableToDeviceForm(BootstrapMixin, forms.ModelForm):
     class Meta:
         model = Cable
         fields = [
-            'termination_b_site', 'termination_b_rack', 'termination_b_device', 'termination_b_id', 'type', 'status',
-            'label', 'color', 'length', 'length_unit',
+            'termination_b_region', 'termination_b_site', 'termination_b_rack', 'termination_b_device',
+            'termination_b_id', 'type', 'status', 'label', 'color', 'length', 'length_unit',
         ]
         widgets = {
             'status': StaticSelect2,
@@ -3544,10 +3594,18 @@ class ConnectCableToCircuitTerminationForm(BootstrapMixin, forms.ModelForm):
         label='Provider',
         required=False
     )
+    termination_b_region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        label='Region',
+        required=False
+    )
     termination_b_site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         label='Site',
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$termination_b_region'
+        }
     )
     termination_b_circuit = DynamicModelChoiceField(
         queryset=Circuit.objects.all(),
@@ -3571,8 +3629,8 @@ class ConnectCableToCircuitTerminationForm(BootstrapMixin, forms.ModelForm):
     class Meta:
         model = Cable
         fields = [
-            'termination_b_provider', 'termination_b_site', 'termination_b_circuit', 'termination_b_id', 'type',
-            'status', 'label', 'color', 'length', 'length_unit',
+            'termination_b_provider', 'termination_b_region', 'termination_b_site', 'termination_b_circuit',
+            'termination_b_id', 'type', 'status', 'label', 'color', 'length', 'length_unit',
         ]
 
     def clean_termination_b_id(self):
@@ -3581,11 +3639,18 @@ class ConnectCableToCircuitTerminationForm(BootstrapMixin, forms.ModelForm):
 
 
 class ConnectCableToPowerFeedForm(BootstrapMixin, forms.ModelForm):
+    termination_b_region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        label='Region',
+        required=False
+    )
     termination_b_site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         label='Site',
         required=False,
-        display_field='cid'
+        query_params={
+            'region_id': '$termination_b_region'
+        }
     )
     termination_b_rackgroup = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -3827,10 +3892,18 @@ class CableFilterForm(BootstrapMixin, forms.Form):
         required=False,
         label='Search'
     )
+    region = DynamicModelMultipleChoiceField(
+        queryset=Region.objects.all(),
+        to_field_name='slug',
+        required=False
+    )
     site = DynamicModelMultipleChoiceField(
         queryset=Site.objects.all(),
         to_field_name='slug',
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     tenant = DynamicModelMultipleChoiceField(
         queryset=Tenant.objects.all(),
@@ -3879,10 +3952,18 @@ class CableFilterForm(BootstrapMixin, forms.Form):
 #
 
 class ConsoleConnectionFilterForm(BootstrapMixin, forms.Form):
+    region = DynamicModelMultipleChoiceField(
+        queryset=Region.objects.all(),
+        to_field_name='slug',
+        required=False
+    )
     site = DynamicModelMultipleChoiceField(
         queryset=Site.objects.all(),
         to_field_name='slug',
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     device_id = DynamicModelMultipleChoiceField(
         queryset=Device.objects.all(),
@@ -3895,10 +3976,18 @@ class ConsoleConnectionFilterForm(BootstrapMixin, forms.Form):
 
 
 class PowerConnectionFilterForm(BootstrapMixin, forms.Form):
+    region = DynamicModelMultipleChoiceField(
+        queryset=Region.objects.all(),
+        to_field_name='slug',
+        required=False
+    )
     site = DynamicModelMultipleChoiceField(
         queryset=Site.objects.all(),
         to_field_name='slug',
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     device_id = DynamicModelMultipleChoiceField(
         queryset=Device.objects.all(),
@@ -3911,10 +4000,18 @@ class PowerConnectionFilterForm(BootstrapMixin, forms.Form):
 
 
 class InterfaceConnectionFilterForm(BootstrapMixin, forms.Form):
+    region = DynamicModelMultipleChoiceField(
+        queryset=Region.objects.all(),
+        to_field_name='slug',
+        required=False
+    )
     site = DynamicModelMultipleChoiceField(
         queryset=Site.objects.all(),
         to_field_name='slug',
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     device_id = DynamicModelMultipleChoiceField(
         queryset=Device.objects.all(),
@@ -3938,9 +4035,19 @@ class DeviceSelectionForm(forms.Form):
 
 
 class VirtualChassisCreateForm(BootstrapMixin, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     rack = DynamicModelChoiceField(
         queryset=Rack.objects.all(),
@@ -3973,7 +4080,7 @@ class VirtualChassisCreateForm(BootstrapMixin, forms.ModelForm):
     class Meta:
         model = VirtualChassis
         fields = [
-            'name', 'domain', 'site', 'rack', 'members', 'initial_position', 'tags',
+            'name', 'domain', 'region', 'site', 'rack', 'members', 'initial_position', 'tags',
         ]
 
     def save(self, *args, **kwargs):
@@ -4070,9 +4177,19 @@ class DeviceVCMembershipForm(forms.ModelForm):
 
 
 class VCMemberSelectForm(BootstrapMixin, forms.Form):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     rack = DynamicModelChoiceField(
         queryset=Rack.objects.all(),
@@ -4171,8 +4288,18 @@ class VirtualChassisFilterForm(BootstrapMixin, CustomFieldFilterForm):
 #
 
 class PowerPanelForm(BootstrapMixin, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
-        queryset=Site.objects.all()
+        queryset=Site.objects.all(),
+        query_params={
+            'region_id': '$region'
+        }
     )
     rack_group = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -4189,7 +4316,7 @@ class PowerPanelForm(BootstrapMixin, forms.ModelForm):
     class Meta:
         model = PowerPanel
         fields = [
-            'site', 'rack_group', 'name', 'tags',
+            'region', 'site', 'rack_group', 'name', 'tags',
         ]
 
 
@@ -4224,9 +4351,19 @@ class PowerPanelBulkEditForm(BootstrapMixin, AddRemoveTagsForm, BulkEditForm):
         queryset=PowerPanel.objects.all(),
         widget=forms.MultipleHiddenInput
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     rack_group = DynamicModelChoiceField(
         queryset=RackGroup.objects.all(),
@@ -4278,11 +4415,21 @@ class PowerPanelFilterForm(BootstrapMixin, CustomFieldFilterForm):
 #
 
 class PowerFeedForm(BootstrapMixin, CustomFieldModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites__powerpanel': '$power_panel'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         required=False,
         initial_params={
             'powerpanel': '$power_panel'
+        },
+        query_params={
+            'region_id': '$region'
         }
     )
     power_panel = DynamicModelChoiceField(
@@ -4308,7 +4455,7 @@ class PowerFeedForm(BootstrapMixin, CustomFieldModelForm):
     class Meta:
         model = PowerFeed
         fields = [
-            'site', 'power_panel', 'rack', 'name', 'status', 'type', 'supply', 'phase', 'voltage', 'amperage',
+            'region', 'site', 'power_panel', 'rack', 'name', 'status', 'type', 'supply', 'phase', 'voltage', 'amperage',
             'max_utilization', 'comments', 'tags',
         ]
         widgets = {

netbox/dcim/views.py

@@ -2043,8 +2043,11 @@ class CableCreateView(ObjectEditView):
         initial_data = {k: request.GET[k] for k in request.GET}
 
         # Set initial site and rack based on side A termination (if not already set)
+        termination_a_site = getattr(obj.termination_a.parent, 'site', None)
+        if termination_a_site and 'termination_b_region' not in initial_data:
+            initial_data['termination_b_region'] = termination_a_site.region
         if 'termination_b_site' not in initial_data:
-            initial_data['termination_b_site'] = getattr(obj.termination_a.parent, 'site', None)
+            initial_data['termination_b_site'] = termination_a_site
         if 'termination_b_rack' not in initial_data:
             initial_data['termination_b_rack'] = getattr(obj.termination_a.parent, 'rack', None)
 

netbox/ipam/forms.py

@@ -253,10 +253,20 @@ class PrefixForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
         label='VRF',
         display_field='display_name'
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         required=False,
-        null_option='None'
+        null_option='None',
+        query_params={
+            'region_id': '$region'
+        }
     )
     vlan_group = DynamicModelChoiceField(
         queryset=VLANGroup.objects.all(),
@@ -369,9 +379,17 @@ class PrefixBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditF
         queryset=Prefix.objects.all(),
         widget=forms.MultipleHiddenInput()
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        to_field_name='slug'
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     vrf = DynamicModelChoiceField(
         queryset=VRF.objects.all(),
@@ -529,10 +547,21 @@ class IPAddressForm(BootstrapMixin, TenancyForm, ReturnURLForm, CustomFieldModel
         label='VRF',
         display_field='display_name'
     )
+    nat_region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        label='Region',
+        initial_params={
+            'sites': '$nat_site'
+        }
+    )
     nat_site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         required=False,
-        label='Site'
+        label='Site',
+        query_params={
+            'region_id': '$nat_region'
+        }
     )
     nat_rack = DynamicModelChoiceField(
         queryset=Rack.objects.all(),
@@ -924,16 +953,26 @@ class IPAddressFilterForm(BootstrapMixin, TenancyFilterForm, CustomFieldFilterFo
 #
 
 class VLANGroupForm(BootstrapMixin, forms.ModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     slug = SlugField()
 
     class Meta:
         model = VLANGroup
         fields = [
-            'site', 'name', 'slug', 'description',
+            'region', 'site', 'name', 'slug', 'description',
         ]
 
 
@@ -973,10 +1012,20 @@ class VLANGroupFilterForm(BootstrapMixin, forms.Form):
 #
 
 class VLANForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
         required=False,
-        null_option='None'
+        null_option='None',
+        query_params={
+            'region_id': '$region'
+        }
     )
     group = DynamicModelChoiceField(
         queryset=VLANGroup.objects.all(),
@@ -1065,9 +1114,17 @@ class VLANBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditFor
         queryset=VLAN.objects.all(),
         widget=forms.MultipleHiddenInput()
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        to_field_name='slug'
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     group = DynamicModelChoiceField(
         queryset=VLANGroup.objects.all(),

netbox/templates/circuits/circuittermination_edit.html

@@ -40,6 +40,7 @@
                                 <p class="form-control-static">{{ form.term_side.value }}</p>
                             </div>
                         </div>
+                        {% render_field form.region %}
                         {% render_field form.site %}
                     </div>
                 </div>

netbox/templates/dcim/cable_connect.html

@@ -32,6 +32,12 @@
                     <div class="panel-body">
                         {% if termination_a.device %}
                             {# Device component #}
+                            <div class="form-group">
+                                <label class="col-md-3 control-label required">Region</label>
+                                <div class="col-md-9">
+                                    <p class="form-control-static">{{ termination_a.device.site.region }}</p>
+                                </div>
+                            </div>
                             <div class="form-group">
                                 <label class="col-md-3 control-label required">Site</label>
                                 <div class="col-md-9">
@@ -111,6 +117,9 @@
                         {% if 'termination_b_provider' in form.fields %}
                             {% render_field form.termination_b_provider %}
                         {% endif %}
+                        {% if 'termination_b_region' in form.fields %}
+                            {% render_field form.termination_b_region %}
+                        {% endif %}
                         {% if 'termination_b_site' in form.fields %}
                             {% render_field form.termination_b_site %}
                         {% endif %}

netbox/templates/dcim/powerfeed_edit.html

@@ -3,10 +3,16 @@
 
 {% block form %}
     <div class="panel panel-default">
-        <div class="panel-heading"><strong>Power Feed</strong></div>
+        <div class="panel-heading"><strong>Power Panel</strong></div>
         <div class="panel-body">
+            {% render_field form.region %}
             {% render_field form.site %}
             {% render_field form.power_panel %}
+        </div>
+    </div>
+    <div class="panel panel-default">
+        <div class="panel-heading"><strong>Power Feed</strong></div>
+        <div class="panel-body">
             {% render_field form.rack %}
             {% render_field form.name %}
             {% render_field form.status %}

netbox/templates/dcim/rack_edit.html

@@ -5,6 +5,7 @@
     <div class="panel panel-default">
         <div class="panel-heading"><strong>Rack</strong></div>
         <div class="panel-body">
+            {% render_field form.region %}
             {% render_field form.site %}
             {% render_field form.name %}
             {% render_field form.facility_id %}

netbox/templates/dcim/rackreservation_edit.html

@@ -5,6 +5,7 @@
     <div class="panel panel-default">
         <div class="panel-heading"><strong>Rack Reservation</strong></div>
         <div class="panel-body">
+            {% render_field form.region %}
             {% render_field form.site %}
             {% render_field form.rack_group %}
             {% render_field form.rack %}

netbox/templates/dcim/virtualchassis_add.html

@@ -13,6 +13,7 @@
     <div class="panel panel-default">
         <div class="panel-heading"><strong>Member Devices</strong></div>
         <div class="panel-body">
+            {% render_field form.region %}
             {% render_field form.site %}
             {% render_field form.rack %}
             {% render_field form.members %}

netbox/templates/ipam/ipaddress_edit.html

@@ -62,6 +62,7 @@
             </ul>
             <div class="tab-content">
                 <div class="tab-pane active" id="by_device">
+                    {% render_field form.nat_region %}
                     {% render_field form.nat_site %}
                     {% render_field form.nat_rack %}
                     {% render_field form.nat_device %}

netbox/templates/ipam/prefix_edit.html

@@ -16,6 +16,7 @@
     <div class="panel panel-default">
         <div class="panel-heading"><strong>Site/VLAN Assignment</strong></div>
         <div class="panel-body">
+            {% render_field form.region %}
             {% render_field form.site %}
             {% render_field form.vlan_group %}
             {% render_field form.vlan %}

netbox/templates/ipam/vlan_edit.html

@@ -8,12 +8,18 @@
             {% render_field form.vid %}
             {% render_field form.name %}
             {% render_field form.status %}
-            {% render_field form.site %}
-            {% render_field form.group %}
             {% render_field form.role %}
             {% render_field form.description %}
         </div>
     </div>
+    <div class="panel panel-default">
+        <div class="panel-heading"><strong>Assignment</strong></div>
+        <div class="panel-body">
+            {% render_field form.region %}
+            {% render_field form.site %}
+            {% render_field form.group %}
+        </div>
+    </div>
     <div class="panel panel-default">
         <div class="panel-heading"><strong>Tenancy</strong></div>
         <div class="panel-body">

netbox/templates/virtualization/cluster_edit.html

@@ -8,6 +8,7 @@
             {% render_field form.name %}
             {% render_field form.type %}
             {% render_field form.group %}
+            {% render_field form.region %}
             {% render_field form.site %}
         </div>
     </div>

netbox/virtualization/forms.py

@@ -79,9 +79,19 @@ class ClusterForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
         queryset=ClusterGroup.objects.all(),
         required=False
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        initial_params={
+            'sites': '$site'
+        }
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region_id': '$region'
+        }
     )
     comments = CommentField()
     tags = DynamicModelMultipleChoiceField(
@@ -92,7 +102,7 @@ class ClusterForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
     class Meta:
         model = Cluster
         fields = (
-            'name', 'type', 'group', 'tenant', 'site', 'comments', 'tags',
+            'name', 'type', 'group', 'tenant', 'region', 'site', 'comments', 'tags',
         )
 
 
@@ -143,9 +153,17 @@ class ClusterBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEdit
         queryset=Tenant.objects.all(),
         required=False
     )
+    region = DynamicModelChoiceField(
+        queryset=Region.objects.all(),
+        required=False,
+        to_field_name='slug'
+    )
     site = DynamicModelChoiceField(
         queryset=Site.objects.all(),
-        required=False
+        required=False,
+        query_params={
+            'region': '$region'
+        }
     )
     comments = CommentField(
         widget=SmallTextarea,