Question

我有两种模式：

class Account(models.Model):
    main_request = models.ForeignKey('JournalistRequest', related_name='main_request')
    key = models.CharField(_('Key'), max_length=100)

class JournalistRequest(models.Model):
    account = models.ForeignKey(Account, blank=True, null=True)

当我尝试删除JournalistRequest时，它会显示带有大量嵌套的警告，例如

Are you sure you want to delete the selected Заявка СМИ objects? All of the following objects and their related items will be deleted:

   Journalist Request: some request
        Account: some account
            Journalist Request: some request
                Account: some account
                    Journalist Request: some request
                        Account: some account
                            Journalist Request: some request
                                Account: some account
                                    Journalist Request: some request

所有帐户都是相同的（ID是相同的），并且所有请求都是相同的，所以我认为这是因为递归。但我不知道如何在Django 1.1.1中解决这个问题！你能救我吗？

Answer 1

您的帐户外键是否记入了JournalistRequest，并且您还将JournalistRequest外键键入帐户。可能没有必要在两个模型类上都有外键。删除其中一个外键将清除循环依赖关系。

如果不是这种情况，您可以在一个或两个类上override the delete method，具体取决于您要查找的行为类型。

Answer 2

我认为我的目标很明确：拥有一个帐户中的许多请求和一个请求必须是主要的。我应该使用什么模式？

class Account(models.Model):
    #whatever

class JournalistRequest(models.Model):
    account = models.ForeignKey(Account)
    is_main = models.BooleanField(default=False)

Django在删除对象时显示太多警告

2 个答案: