Method errors

rest_framework/serializers.py:813–822

(self)

    @property
    def errors(self):
        ret = super().errors
        if isinstance(ret, list) and len(ret) == 1 and getattr(ret[0], 'code', None) == 'null':
            # Edge case. Provide a more descriptive error than
            # "this field may not be null", when no data is passed.
            detail = ErrorDetail('No data provided', code='null')
            ret = {api_settings.NON_FIELD_ERRORS_KEY: [detail]}
        if isinstance(ret, dict):
            return ReturnDict(ret, serializer=self)
        return ReturnList(ret, serializer=self)


# ModelSerializer & HyperlinkedModelSerializer