fix: Fix "'NoneType' object has no attribute 'widget'" when M2M uses …

…intermediary model (#10)
unfoldadmin · Sep 13, 2022 · 61ea6f7 · 61ea6f7
1 parent df42f58
commit 61ea6f7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/unfold/admin.py b/src/unfold/admin.py
@@ -228,6 +228,10 @@ def formfield_for_manytomany(self, db_field, request, **kwargs):
 
         form_field = super().formfield_for_manytomany(db_field, request, **kwargs)
 
+        # If M2M uses intermediary model, form_field will be None
+        if not form_field:
+            return None
+
         if isinstance(form_field.widget, SelectMultiple):
             form_field.widget.attrs["class"] = " ".join(SELECT_CLASSES)