Question

在我的项目中，当我添加一个使用ForeignKey w / User和＆＃39; related_name＆＃39;的模型时，我在models.py中收到错误。例如：

class Follow(models.Model):
follower = models.ForeignKey('User', related_name='id_of_the_follower')
who_following = models.ForeignKey('User', related__name='id_of_the_person_being_followed')
pubdate = models.DateTimeField(default=timezone.now)

class Meta:
    ordering = ['-pubdate']

我得到的错误是：

lobby.follow: 'follower' has a relation with model User, which has either not been installed or is abstract.
lobby.follow: 'who_following' has a relation with model User, which has either not been installed or is abstract.

我导入了我的用户数据库：来自django.contrib.auth.models导入用户

Models.py可以很好地验证我的其他模型，这些模型将User作为ForeignKey但不使用＆＃39; related_name＆＃39;但是当我有一个related_name时，它一直让我犯错。

Answer 1

首先：你已经写过＆＃34; related_name＆＃34; （＆＃34; who_following＆＃34; field）关键字带有双下划线。这是错的！

只要您使用＆＃34; django.contrib.auth＆＃34;你应该像这样引用用户模型：

class Follow(models.Model):
    follower = models.ForeignKey('auth.User',
        related_name='id_of_the_follower')
    who_following = models.ForeignKey('auth.User',
        related_name='id_of_the_person_being_followed')

或者您可以明确地引用模型用户：

from django.db import models
from django.contrib.auth.models import User

class Follow(models.Model):
    follower = models.ForeignKey(User,
        related_name='id_of_the_follower')
    who_following = models.ForeignKey(User,
        related_name='id_of_the_person_being_followed')

但是，如果你想引用＆＃34;用户＆＃34;从项目中的其他应用程序模型，您应该执行以下操作：

class Follow(models.Model):
    follower = models.ForeignKey("yourappname.User",
        related_name='id_of_the_follower')
    who_following = models.ForeignKey("yourappname.User",
        related_name='id_of_the_person_being_followed')

Django＆＃39; related_name＆＃39;用户验证错误

1 个答案: