Return correct errors

graphene_django/rest_framework/mutation.py

@@ -140,12 +140,10 @@ class SerializerMutation(ClientIDMutation):
         if serializer.is_valid():
             return cls.perform_mutate(serializer, info)
         else:
-            errors = [
-                ErrorType(field=key, messages=value)
-                for key, value in serializer.errors.items()
-            ]
+            # TODO: make sure that we have the correct value for
+            # non field errors
 
-            return cls(errors=errors)
+            return cls(errors=cls.Errors(**serializer.errors))
 
     @classmethod
     def perform_mutate(cls, serializer, info):

graphene_django/rest_framework/tests/test_mutation.py

@@ -159,13 +159,14 @@ def test_mutate_and_get_payload_error():
 
     # missing required fields
     result = MyMutation.mutate_and_get_payload(None, mock_info(), **{})
-    assert len(result.errors) > 0
+    assert result.errors.text[0] == "This field is required."
+    assert result.errors.model[0] == "This field is required."
 
 
 def test_model_mutate_and_get_payload_error():
     # missing required fields
     result = MyModelMutation.mutate_and_get_payload(None, mock_info(), **{})
-    assert len(result.errors) > 0
+    assert result.errors.cool_name[0] == "This field is required."
 
 
 def test_invalid_serializer_operations():