如何在删除时执行CASCADE? [英] How to execute CASCADE on delete?

问题描述

我在Django中有这个模型，其中person具有与Django提供的user相同的信息，还有更多的信息.当我创建一个新的person时，它还需要创建一个新的user，这很好.但是，当我删除person时，user仍保留在数据库中.我在这里想念什么?我也想删除user.

I have this model in Django, where a person has the same information from the user provided by Django plus a little bit more information. When I create a new person it requires to create a new user also, that's fine. But when I delete a person the user still remains on my database. What am I missing here ? I would like to delete the user too.

class Person(models.Model):
    user = OneToOneField(User)
    gender = CharField(max_length=1, choices=GenderChoices, blank=True, null=True)
    birth_date = DateField(blank=True, null=True)

    def __unicode__(self):
        return self.user.username

推荐答案

尝试

Try to override the delete method on the model (code not tested):

class Person(models.Model):
    user = OneToOneField(User)
    gender = CharField(max_length=1, choices=GenderChoices, blank=True, null=True)
    birth_date = DateField(blank=True, null=True)

    def __unicode__(self):
        return self.user.username

    def delete():
        theuser = User.objects.get(id=user)
        theuser.delete()

我在Django 此处.

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