如何将当前登录的用户指定为模型字段的默认值? [英] How to assign currently logged in user as default value for a model field?

问题描述

我想做这样的事情:

class Task(models.Model):
    ...
    created_by = models.ForeignKey(User, **default=[LoggedInUser]** blank=True, null=True, related_name='created_by')

这可能吗?除了在视图中执行 request.user 之外，我找不到获取登录用户的正确方法，这似乎在这里不起作用.

Is this possible? I couldn't find what's the proper way to get the logged in user, apart from doing request.user, in a view, which doesn't seem to work here.

PS_我意识到我可以通过其他方式初始化模型数据，但我认为这是最干净的方法.

PS_ I realise I could initialize the Model data by other means, but I think this is the cleanest way.

推荐答案

不，你不能这样做.Django(和 Python)几乎零 全局值，这是一件好事(tm).通常，您可以使用 request.user 在 view(request) 中获取当前用户.然后，您可以将其作为参数传递给各种方法/函数，但尝试设置全局 user 只会导致多线程环境中的眼泪.

No, you can't do it this way. Django (and Python) has pretty much zero global values, and that's a Good Thing(tm). Normally you get the current user in the view(request) with request.user. You can then pass that as a param to various methods/functions, but trying to set a global user will only lead to tears in a multi-threaded environment.

应该有一个保险杠贴纸，上面写着，Globals are Evil.这会让您对我的 PHP 第一个问题有一个很好的了解.

There should be a bumper sticker that says, Globals are Evil. This will give you a good idea about my Number One problem with PHP.

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