managers.py 文件源码

def _get_unrecoverable_nodes(self, user):
        """
        Filter Workspace where the user is the only member
        :param user:
        :return: QuerySet
        """
        member_cls = get_model('accounts', 'Member')
        return get_model('nodes', 'Node').objects.filter(
            pk__in=member_cls.objects.filter(user=user).values_list(
                'node_id', flat=True)
        ).annotate(is_recoverable=Count('membership')).exclude(
            is_recoverable__gt=1)