def disallow_extra_fields(self, processed_data, original_data):
# If the input data isn't a dict just short-circuit and let the Marshmallow unmarshaller
# raise an error.
if not isinstance(original_data, dict):
return
input_fields = original_data.keys()
expected_fields = list(self.fields) + [
field.load_from
for field in self.fields.values() if field.load_from is not None
]
excluded_fields = self.exclude
unsupported_fields = set(input_fields) - set(expected_fields) - set(
excluded_fields)
if len(unsupported_fields) > 0:
raise ValidationError(
message=messages.unsupported_fields(unsupported_fields))
def test_unexpected_field(self):
data, errs = DisallowExtraFieldsSchema().load({"foo": "bar"})
self.assertEqual(errs,
{"_schema": [messages.unsupported_fields(["foo"])]})
def test_unexpected_field(self):
data, errs = DisallowExtraFieldsSchema().load({'foo': 'bar'})
self.assertEqual(errs,
{'_schema': [messages.unsupported_fields(['foo'])]})