related.py 文件源码

def __init__(self, to, from_fields, to_fields, swappable=True, **kwargs):
        self.from_fields = from_fields
        self.to_fields = to_fields
        self.swappable = swappable

        if 'rel' not in kwargs:
            kwargs['rel'] = ForeignObjectRel(
                self, to,
                related_name=kwargs.pop('related_name', None),
                related_query_name=kwargs.pop('related_query_name', None),
                limit_choices_to=kwargs.pop('limit_choices_to', None),
                parent_link=kwargs.pop('parent_link', False),
                on_delete=kwargs.pop('on_delete', CASCADE),
            )
        kwargs['verbose_name'] = kwargs.get('verbose_name', None)

        super(ForeignObject, self).__init__(**kwargs)