use source instead of field_name for model field detection tfranzel#274

diesieben07 · Jan 31, 2021 · 23ca3a8 · 23ca3a8
1 parent 5fb9c10
commit 23ca3a8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drf_spectacular/openapi.py b/drf_spectacular/openapi.py
@@ -480,9 +480,9 @@ def _map_serializer_field(self, field, direction):
                 model_field = field.queryset.model._meta.pk
             else:
                 if isinstance(field.parent, serializers.ManyRelatedField):
-                    relation_field = field.parent.parent.Meta.model._meta.get_field(field.parent.field_name)
+                    relation_field = field.parent.parent.Meta.model._meta.get_field(field.parent.source)
                 else:
-                    relation_field = field.parent.Meta.model._meta.get_field(field.field_name)
+                    relation_field = field.parent.Meta.model._meta.get_field(field.source)
                 model_field = relation_field.related_model._meta.pk
 
             # primary keys are usually non-editable (readOnly=True) and map_model_field correctly