hstore.py 文件源码

def to_python(self, value):
        if not value:
            return {}
        if not isinstance(value, dict):
            try:
                value = json.loads(value)
            except ValueError:
                raise ValidationError(
                    self.error_messages['invalid_json'],
                    code='invalid_json',
                )

        if not isinstance(value, dict):
            raise ValidationError(
                self.error_messages['invalid_format'],
                code='invalid_format',
            )

        # Cast everything to strings for ease.
        for key, val in value.items():
            value[key] = six.text_type(val)
        return value