moved default group check to model function

netbox_topology_views/views.py

@@ -157,24 +157,11 @@ def create_node(
     node["image"] = get_image_for_entity(device)
 
     if group_id is None or group_id == "default":
-        # Default group named "default" must always exist in order to make sure
-        # that coordinate values can be stored even if no coordinate group has been
-        # selected. The default group will be added automatically if it does not exist.
-        try:
-            if CoordinateGroup.objects.filter(name="default"):
-                group = CoordinateGroup.objects.get(name="default")
-                group_id = group.pk
-            else:
-                group = CoordinateGroup(
-                    name="default", 
-                    description="Automatically generated default group. If you delete "
-                        "this group, all default coordinates are gone for good but "
-                        "the group itself will be re-created."
-                )
-                group.save()
-                group_id = group.pk
-        except:
-            pass
+        group_id = Coordinate.get_or_create_default_group(group_id)
+        if not group_id:
+            node["x"] = 0
+            node["y"] = 0
+            return node
    
     group = get_object_or_404(CoordinateGroup, pk=group_id)