使用“删除戳记”和自动级联删除

时间:2011-10-23 22:47:50

标签: django cascade stamp

由于我从不想真正删除USER (BASE)个对象,因此我在delete_date模型上引入了BASE

class BASE (models.Model):

    class Meta:

        abstract = True
        app_label = 'base'
        verbose_name_plural = 'bases'

    objects = BASE_MANAGER ()

    insert_date = models.DateTimeField (default = datetime.now (), auto_now_add = True)
    update_date = models.DateTimeField (default = datetime.now (), auto_now = True)
    delete_date = models.DateTimeField (null = True, blank = True)

    def save (self):

        super (BASE, self).save ()

    def delete (self):

        if not self.delete_date:
            self.update_date = datetime.now ()
            self.delete_date = datetime.now ()
            self.save ()
        else:
            pass ## no delete!

现在因为我没有在super (BASE, self).delete ()中包含BASE.delete,所以没有执行实际的SQL,这很好;不幸的是,这也阻止了外键的级联。在Django中有没有一种优雅的方法来实现这一目标?

1 个答案:

答案 0 :(得分:0)

我想我已经找到了我一直在寻找的答案,因为显然用于描述我的用例的实际术语是在soft delete cascading实施的soft delete implementation中描述的“软删除”。

我会看看那个;仍然感谢你的回复。 :)