Django Storage 应用程序，不同 "upload_to" 取决于用户的选择

Question

我正在尝试实现用户可以上传文件并选择（在表单中）此文件是全局文件（所有人可用）还是私有文件（仅供他使用）的功能。表格看起来像这样

首先我将模型、视图、表单等加倍，唯一的区别是：

file = models.FileField(upload_to=user_directory_path)

和

file = models.FileField(upload_to='global files/')

是什么破坏了DRY规则。显然这不是我想要达到的。

然后我尝试在模型中做一个布尔值，并根据用户的选择更改 upload_to 参数：

class FileModel(models.Model):
    title = models.CharField(max_length=50, blank=True)
    uploaded_at = models.DateTimeField(auto_now_add=True)
    file = models.FileField(upload_to=user_directory_path)
    user = models.ForeignKey(User, on_delete=models.CASCADE, default=1)
    STATUS = (
      (1, ('Global file')),
      (2, ('My file')),
      )
    status = models.CharField(max_length = 30, choices=STATUS, default=2)
    if status == 'My file':
        file = models.FileField(upload_to=user_directory_path)

    elif status == 'Global file':
        file = models.FileField(upload_to='global files')

很遗憾，它不起作用。有人知道如何实现吗？

Answer 1

其中一个就够了

file = models.FileField(upload_to=user_directory_path)

您不想破坏 DRY 或添加无用的 db 列，让我们深入了解表单

# forms.py 

class MyForm(...):
    ...
    def form_valid(self, form):
       # here you have access to form.data and form.instance (the instance of your model)
       # I'll make it pseudo and you translate to python
       # get what the user chose from form.data in a variable (print it first to see it)
       # edit the form.instance.file depending on it. (instance of your model
       # think of it as my_instance = form.instance)

Django Storage 应用程序，不同 "upload_to" 取决于用户的选择

Django Storage app, different "upload_to" depending on user's choice

python

django

forms

choice