Introduce PathContains lookup to allow filtering against objects in path directly

netbox/dcim/lookups.py

@@ -0,0 +1,10 @@
+from django.contrib.postgres.fields.array import ArrayContains
+
+from dcim.utils import object_to_path_node
+
+
+class PathContains(ArrayContains):
+
+    def get_prep_lookup(self):
+        self.rhs = [object_to_path_node(self.rhs)]
+        return super().get_prep_lookup()