django - ManyToOneRel 字段用于以下功能？

Question

我读了这个问题线程( Difference between ManyToOneRel and ForeignKey? )，但我没有完全理解它。我需要多对一的关系，以便我可以添加以下功能。尝试了多对多，这使得两个用户互相关注，即使其中一个用户不想关注(如果一个用户点击“关注”，那么它的行为就像另一个用户也做了同样的事情一样。)

问题是，我是否需要为关注者(关注登录用户的人)使用 ManyToOneRel 字段，并为用户关注的人使用相同的字段？

请原谅，我正在自学一切，有些东西有时可能很难掌握。

Answer 1

您需要通过设置 symmetrical=... parameter [Django-doc] 使关系不对称为 False，例如:

class Profile(models.Model):
    follows = models.ManyToManyField(
        'self',
        <b>symmetrical=False</b>,
        related_name='followers'
    )

正如文档所述:

When Django processes this model, it identifies that it has a ManyToManyField on itself, and as a result, it doesn’t add a person_set attribute to the Person class. Instead, the ManyToManyField is assumed to be symmetrical – that is, if I am your friend, then you are my friend.

If you do not want symmetry in many-to-many relationships with self, set symmetrical to False. This will force Django to add the descriptor for the reverse relationship, allowing ManyToManyField relationships to be non-symmetrical.