models.py 文件源码

def remove_obj_perms_connected_with_user(sender, instance, **kwargs):
    """ Remove user's permissions upon user deletion (``pre_delete.connect``).

    :param sender: sender object
    :param instance: user instance
    :param kwargs: dictionary argument
    :return: None
    """
    filters = Q(content_type=ContentType.objects.get_for_model(instance),
                object_pk=instance.pk)
    UserObjectPermission.objects.filter(filters).delete()
    GroupObjectPermission.objects.filter(filters).delete()

    if instance.profile:
        instance.profile.delete()
    if instance.preference:
        for i in instance.preference.all():
            i.delete()