Django FileField与upload_to在运行时确定 [英] Django FileField with upload_to determined at runtime

问题描述

我正在尝试设置我的上传，以便如果用户joe上传一个文件，它将转到MEDIA_ROOT / joe，而不是让所有人的文件都转到MEDIA_ROOT。问题是我不知道如何在模型中定义这个。这是现在的样子：

I'm trying to set up my uploads so that if user joe uploads a file it goes to MEDIA_ROOT/joe as opposed to having everyone's files go to MEDIA_ROOT. The problem is I don't know how to define this in the model. Here is how it currently looks:

class Content(models.Model):
    name = models.CharField(max_length=200)
    user = models.ForeignKey(User)
    file = models.FileField(upload_to='.')

所以我想要的不是'。'作为upload_to，它是用户的名字。

So what I want is instead of '.' as the upload_to, have it be the user's name.

我明白，的Django 1.0你可以定义你自己的函数来处理upload_to，但这个函数不知道用户是谁，所以我有点迷失了。

I understand that as of Django 1.0 you can define your own function to handle the upload_to but that function has no idea of who the user will be either so I'm a bit lost.

谢谢为了帮助！

推荐答案

你可能读过文档，所以这里有一个很简单的例子来说明这一点：

You've probably read the documentation, so here's an easy example to make it make sense:

def content_file_name(instance, filename):
    return '/'.join(['content', instance.user.username, filename])

class Content(models.Model):
    name = models.CharField(max_length=200)
    user = models.ForeignKey(User)
    file = models.FileField(upload_to=content_file_name)

如您所见，您甚至不需要使用文件名 - 如果您喜欢，您也可以在upload_to callable中覆盖。

As you can see, you don't even need to use the filename given - you could override that in your upload_to callable too if you liked.

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