Load select_related after update resource

fastapi_admin/routes/resources.py

@@ -103,6 +103,7 @@ async def update(
         obj = (
             await model.filter(pk=pk)
             .using_db(conn)
+            .select_related(*model_resource.get_fk_field())
             .get()
             .prefetch_related(*model_resource.get_m2m_field())
         )