Closes #3062: Add assigned_to_interface filter for IP addresses

docs/release-notes/version-2.6.md

@@ -2,6 +2,7 @@
 
 ## Enhancements
 
+* [#3062](https://github.com/netbox-community/netbox/issues/3062) - Add `assigned_to_interface` filter for IP addresses
 * [#3461](https://github.com/netbox-community/netbox/issues/3461) - Fail gracefully on custom link rendering exception
 * [#3705](https://github.com/netbox-community/netbox/issues/3705) - Provide request context when executing custom scripts
 * [#3762](https://github.com/netbox-community/netbox/issues/3762) - Add date/time picker widgets

netbox/ipam/filters.py

@@ -309,6 +309,10 @@ class IPAddressFilter(TenancyFilterSet, CustomFieldFilterSet, CreatedUpdatedFilt
         queryset=Interface.objects.all(),
         label='Interface (ID)',
     )
+    assigned_to_interface = django_filters.BooleanFilter(
+        method='_assigned_to_interface',
+        label='Is assigned to an interface',
+    )
     status = django_filters.MultipleChoiceFilter(
         choices=IPADDRESS_STATUS_CHOICES,
         null_value=None
@@ -366,6 +370,9 @@ class IPAddressFilter(TenancyFilterSet, CustomFieldFilterSet, CreatedUpdatedFilt
         except Device.DoesNotExist:
             return queryset.none()
 
+    def _assigned_to_interface(self, queryset, name, value):
+        return queryset.exclude(interface__isnull=value)
+
 
 class VLANGroupFilter(NameSlugSearchFilterSet):
     site_id = django_filters.ModelMultipleChoiceFilter(

netbox/ipam/forms.py

@@ -938,7 +938,8 @@ class IPAddressAssignForm(BootstrapMixin, forms.Form):
 class IPAddressFilterForm(BootstrapMixin, TenancyFilterForm, CustomFieldFilterForm):
     model = IPAddress
     field_order = [
-        'q', 'parent', 'family', 'mask_length', 'vrf_id', 'status', 'role', 'tenant_group', 'tenant',
+        'q', 'parent', 'family', 'mask_length', 'vrf_id', 'status', 'role', 'assigned_to_interface', 'tenant_group',
+        'tenant',
     ]
     q = forms.CharField(
         required=False,
@@ -984,6 +985,13 @@ class IPAddressFilterForm(BootstrapMixin, TenancyFilterForm, CustomFieldFilterFo
         required=False,
         widget=StaticSelect2Multiple()
     )
+    assigned_to_interface = forms.NullBooleanField(
+        required=False,
+        label='Assigned to an interface',
+        widget=StaticSelect2(
+            choices=BOOLEAN_WITH_BLANK_CHOICES
+        )
+    )
 
 
 #