django - 将文件上传到特定文件夹

Question

我有一个用户配置文件，其中包含用户名和用户分配到的组。我希望将上传的文件保存在组名文件夹下。文件夹已经存在于媒体根目录，文件应该被路由到这些文件夹

我通过给出的解决方案解决了这个问题。现在，用户名在上传页面上显示为下拉列表。我只想显示记录的用户名或排除甚至显示它

models.py

class uploadmeta(models.Model):

    path = models.ForeignKey(Metadataform, on_delete=models.CASCADE)

    user_profile = models.ForeignKey(UserProfile, on_delete=models.CASCADE, null=True, verbose_name='Username')


    tar_gif = models.FileField(upload_to=nice_user_folder_upload, verbose_name="Dataset") # validators=[FileExtensionValidator(allowed_extensions=['tar', 'zip'])]


    def __str__(self):
        return self.request.user.username

class UserProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)

    Group= models.CharField(max_length=500, choices=Group_choices, default='Please Select')

    def __str__(self):
        return self.user.username

view.py

def uploaddata(request):
        if request.user.is_authenticated:

                if request.method == 'POST':

                        form = uploadmetaform(request.POST, request.FILES)
                        if form.is_valid():
                                form.save()

                                return redirect('file_list')
                else:
                        form = uploadmetaform()
                return render(request, 'uploaddata.html', {
                        'form': form
                })
        else:
                return render(request, 'home.html')

forms.py

class uploadmetaform(forms.ModelForm):
        count = Metadataform.objects.all().latest('id').id #To know the id of latest object
        data  = Metadataform.objects.all().filter(id=count) #return the queryset with only latest object
        path  = forms.ModelChoiceField(queryset=data)

        def __init__(self, *args, **kwargs):
            super(uploadmetaform, self).__init__(*args, **kwargs)
            count = Metadataform.objects.all().latest('id').id
            data = Metadataform.objects.all().filter(id=count)
            self.fields['path'] = forms.ModelChoiceField(queryset=data)


        class Meta:
            model = uploadmeta
            fields = ['path', 'user_profile','tar_gif',]

Answer 1

您可以在FileField 中使用upload_to 参数。 它接受一个字符串，表示您要存储文件的路径，或者您可以传入一个函数来添加更多详细信息。

来自文档的更多信息：https://docs.djangoproject.com/fr/2.2/ref/models/fields/#django.db.models.FileField.upload_to

您可能需要将外键形式 uploadmeta 添加到 UserProfile 中，例如：

user_profile = models.ForeignKey(UserProfile, on_delete=models.PROTECT)

那么你可以使用下面的

def nice_user_folder_upload(instance, filename):
    extension = filename.split(".")[-1]
    return (
        f"your_already_definied_folder/{instance.user_profile.group}/{file}.{extension}"
    )

然后在uploadmetaFileField中使用 doc = models.FileField(upload_to=nice_user_folder_upload, verbose_name="Dataset")