如何将当前登录的用户分配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'）
  pre> 
 
 
这可能吗？我找不到什么是正确的方式来获取登录的用户，除了请求。用户，在一个视图，这似乎不起作用。
 
 
 
 PS_我意识到我可以用其他方式初始化模型数据，但我认为这是最干净的方式。
解决方案
你不能这样做。 Django（和Python）的全局值几乎都是零，这是一个好事（tm）。通常，您可以在视图（请求）中使用 request.user 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，但尝试设置全局用户将仅导致多线程环境中的眼泪。
 
 
 
应该有一个保险杠贴纸，说全球是邪恶的。这将让您对PHP的第一个问题有一个好主意。
 
I'd like to do something like this:
class Task(models.Model):
    ...
    created_by = models.ForeignKey(User, **default=[LoggedInUser]** blank=True, null=True, related_name='created_by')
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_ I realise I could initialize the Model data by other means, but I think this is the cleanest way.
解决方案
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.

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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