from marshmallow import EXCLUDE, Schema

from apollo_utils.service.exceptions import BadRequest


class RequestSchema(Schema):
    """Base class for schemes used with @querystring_schema decorator.
       Allows raise Bad Request in case of having errors (instead of 422).
    """

    class Meta:
        strict = True
        unknown = EXCLUDE

    def handle_error(self, exc, data, **kwargs):
        """Overwrite original ValidationError with custom exception."""

        raise BadRequest(extra=exc.messages)