Adds assigned bool for IP address API (#13301)

* adds assigned bool for ip address API #13151

* Add filterset test

---------

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

netbox/ipam/filtersets.py

@@ -591,6 +591,10 @@ class IPAddressFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
         method='_assigned_to_interface',
         label=_('Is assigned to an interface'),
     )
+    assigned = django_filters.BooleanFilter(
+        method='_assigned',
+        label=_('Is assigned'),
+    )
     status = django_filters.MultipleChoiceFilter(
         choices=IPAddressStatusChoices,
         null_value=None
@@ -706,6 +710,18 @@ class IPAddressFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
                 assigned_object_id__isnull=False
             )
 
+    def _assigned(self, queryset, name, value):
+        if value:
+            return queryset.exclude(
+                assigned_object_type__isnull=True,
+                assigned_object_id__isnull=True
+            )
+        else:
+            return queryset.filter(
+                assigned_object_type__isnull=True,
+                assigned_object_id__isnull=True
+            )
+
 
 class FHRPGroupFilterSet(NetBoxModelFilterSet):
     protocol = django_filters.MultipleChoiceFilter(

netbox/ipam/tests/test_filtersets.py

@@ -992,6 +992,12 @@ class IPAddressTestCase(TestCase, ChangeLoggedFilterSetTests):
         params = {'fhrpgroup_id': [fhrp_groups[0].pk, fhrp_groups[1].pk]}
         self.assertEqual(self.filterset(params, self.queryset).qs.count(), 2)
 
+    def test_assigned(self):
+        params = {'assigned': 'true'}
+        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 8)
+        params = {'assigned': 'false'}
+        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 4)
+
     def test_assigned_to_interface(self):
         params = {'assigned_to_interface': 'true'}
         self.assertEqual(self.filterset(params, self.queryset).qs.count(), 6)