Method __init__

mongoengine/fields.py:1093–1097

(self, field=None, *args, **kwargs)

    """

    def __init__(self, field=None, *args, **kwargs):
        # XXX ValidationError raised outside the "validate" method.
        if not isinstance(field, BaseField):
            self.error("Argument to MapField constructor must be a valid field")
        super().__init__(field=field, *args, **kwargs)


class ReferenceField(BaseField):