7025 circuit redundancy (#16945)

* 7025 CircuitRedundancyGroups

* 7025 CircuitRedundancyGroups api

* 7025 CircuitRedundancyGroups api

* 7025 CircuitRedundancyGroups tests

* 7025 CircuitRedundancyGroup -> CircuitGroup

* 7025 add tenancy

* 7025 linkify name

* 7025 missing file

* 7025 circuitgroupassignment

* 7025 base group assignment working

* 7025 assignments

* 7025 fix forms/tests for CircuitGroup

* 7025 fix api tests

* 7025 view tests

* 7025 CircuitGroupAssignment tests

* 7025 fix typo

* 7025 fix typo

* 7025 fix tests

* 7025 remove m2m

* 7025 add count to serializer

* 7025 fix test

* 7025 documentation

* 7025 review comments

* 7025 review comments

* 7025 add search index

* Make CircuitPriorityChoices extensible

* Add group assignment table to circuit view

* Misc cleanup

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/circuits/filtersets.py

@@ -13,6 +13,8 @@ from .models import *
 
 __all__ = (
     'CircuitFilterSet',
+    'CircuitGroupAssignmentFilterSet',
+    'CircuitGroupFilterSet',
     'CircuitTerminationFilterSet',
     'CircuitTypeFilterSet',
     'ProviderNetworkFilterSet',
@@ -303,3 +305,43 @@ class CircuitTerminationFilterSet(NetBoxModelFilterSet, CabledObjectFilterSet):
             Q(pp_info__icontains=value) |
             Q(description__icontains=value)
         ).distinct()
+
+
+class CircuitGroupFilterSet(OrganizationalModelFilterSet, TenancyFilterSet):
+
+    class Meta:
+        model = CircuitGroup
+        fields = ('id', 'name', 'slug', 'description')
+
+
+class CircuitGroupAssignmentFilterSet(NetBoxModelFilterSet):
+    q = django_filters.CharFilter(
+        method='search',
+        label=_('Search'),
+    )
+    circuit_id = django_filters.ModelMultipleChoiceFilter(
+        queryset=Circuit.objects.all(),
+        label=_('Circuit'),
+    )
+    group_id = django_filters.ModelMultipleChoiceFilter(
+        queryset=CircuitGroup.objects.all(),
+        label=_('Circuit group (ID)'),
+    )
+    group = django_filters.ModelMultipleChoiceFilter(
+        field_name='group__slug',
+        queryset=CircuitGroup.objects.all(),
+        to_field_name='slug',
+        label=_('Circuit group (slug)'),
+    )
+
+    class Meta:
+        model = CircuitGroupAssignment
+        fields = ('id', 'circuit', 'group', 'priority')
+
+    def search(self, queryset, name, value):
+        if not value.strip():
+            return queryset
+        return queryset.filter(
+            Q(circuit__cid__icontains=value) |
+            Q(group__name__icontains=value)
+        )