diff options
| -rw-r--r-- | rest_framework/serializers.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py index d417ca80..b1175b5b 100644 --- a/rest_framework/serializers.py +++ b/rest_framework/serializers.py @@ -681,8 +681,8 @@ class ModelSerializer(Serializer): def update(self, instance, validated_attrs): assert not any( - isinstance(field, BaseSerializer) and not field.read_only - for field in self.fields.values() + isinstance(field, BaseSerializer) and (key in validated_attrs) + for key, field in self.fields.values() ), ( 'The `.update()` method does not suport nested writable fields ' 'by default. Write an explicit `.update()` method for serializer ' |