Django .update不会调用覆盖保存？

I am trying to call this overrride save method in models:

我试图在模型中调用这个覆盖保存方法：

def save(self, *args, **kwargs):
    if self.done is True:
        if self.averagepa is None:
            pass
        elif self.averagepa < 26:
            self.links = 5
        elif self.averagepa < 31:
            self.links = 10
        elif self.averagepa < 36:
            self.links = 15
        elif self.averagepa < 41:
            self.links = 20
        else:
            self.links = 99
super(KW, self).save(*args, **kwargs)

This works perfectly if I just save model in admin panel. But when I try to update it via ./manage.py shell like this:

如果我只是在管理面板中保存模型，这非常有效。但是，当我尝试通过./manage.py shell更新它时，如下所示：

KW.objects.filter(id=138).update()

It doesn't trigger it. How can I call save override method with update from shell?

它不会触发它。如何从shell调用保存覆盖方法？

1 个解决方案

#1

This is the documented behaviour of the update() method.

这是update（）方法的记录行为。

Be aware that the update() method is converted directly to an SQL statement. It is a bulk operation for direct updates. It doesn’t run any save() methods on your models, or emit the pre_save or post_save signals (which are a consequence of calling save()), or honor the auto_now field option. If you want to save every item in a QuerySet and make sure that the save() method is called on each instance, you don’t need any special function to handle that. Just loop over them and call save().

请注意，update（）方法直接转换为SQL语句。这是直接更新的批量操作。它不会在模型上运行任何save（）方法，也不会发出pre_save或post_save信号（这是调用save（）的结果），或者遵循auto_now字段选项。如果要保存QuerySet中的每个项目并确保在每个实例上调用save（）方法，则不需要任何特殊函数来处理它。只需循环遍历它们并调用save（）。

In your case:

在你的情况下：

kw = KW.objects.get(id=138)
# update kw
kw.save()

#1