通过精确的M2M值获取实例 [英] Get instance by exact M2M values

问题描述

我有一个对话线程模型，一个成员 M2M字段给用户。

I have a conversation Thread model with a members M2M field to User.

我需要做什么是得到只有具体成员相关的Thread的实例，不再多，不少。

What I need to do is to get the instance of Thread which has only specific members related, no more, no less.

推荐答案

我想你在尝试做这样的事情：

I think you are trying to do something like this:

class Thread(models.Model):
    members = models.ManyToManyField(User, related_name='threads')

>> user_threads = user.threads.filter(any_condition)

编辑：

你需要看起来像这样：

>> exact_users = [user1, user2, ...]
>> ts = Thread.objects.filter(members__in = exact_users)

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