'Refactored by Sourcery'

Author: Sourcery AI

netbox_acls/forms/models.py

@@ -490,20 +490,19 @@ def _check_if_interface_already_has_acl_in_direction(self, assigned_object_id, a
         """
         Check that the interface does not have an existing ACL applied in the direction already.
         """
-        if ACLInterfaceAssignment.objects.filter(
+        if not ACLInterfaceAssignment.objects.filter(
             assigned_object_id=assigned_object_id,
             assigned_object_type=assigned_object_type_id,
             direction=direction,
         ).exists():
-            error_interface_already_assigned = (
-                "Interfaces can only have 1 Access List assigned in each direction."
-            )
-            return {
-                "direction": [error_interface_already_assigned],
-                assigned_object_type: [error_interface_already_assigned],
-            }
-        else:
             return {}
+        error_interface_already_assigned = (
+            "Interfaces can only have 1 Access List assigned in each direction."
+        )
+        return {
+            "direction": [error_interface_already_assigned],
+            assigned_object_type: [error_interface_already_assigned],
+        }
 
 
     def save(self, *args, **kwargs):