上传文件而我无法通过'tuple'对象没有属性'startswith'错误

Question

我收到了这个错误

AttributeError at /admin/user/usermodel/1/
'tuple' object has no attribute 'startswith'

当我尝试将文件加载到管理员时,我真的很新文件上传,无法弄明白

settings.py

STATIC_URL = '/static/'

STATIC_ROOT = '/home/user/project/foo/yesno/static/'

STATICFILES_DIRS = (
    '/home/user/project/foo/yesno/static_store',
)

MEDIA_ROOT = '/home/user/project/foo/yesno/static/media',

MEDIA_URL = '/media/'

models.py

def get_upload_file_name(instance, filename):
    return "uploaded_files/%s_%s" % (str(time()).replace('.','_'), filename)

filename = ''

# Create your models here.

class UserModel(models.Model):
    user        = models.OneToOneField(User)
    position    = models.IntegerField(default=1)
    thumbnail   = models.FileField(upload_to="uploaded_files", blank=True)

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

forms.py

class ThumbnailForm(forms.Form):

    thumbnail = forms.FileField()

views.py

def handle_uploaded_file(f):
    with open('some/file/name.txt', 'wb+') as destination:
        for chunk in f.chunks():
            destination.write(chunk)

def UploadPicRequest(request):
    if request.method == 'POST':
        thumb_form = ThumbnailForm(request.POST, request.FILES)
        if thumb_form.is_valid():
            handle_uploaded_file(request.FILES['file'])
            return HttpResponseRedirect('/')
        else:
            thumb_form = ThumbnailForm()
        return render_to_response('/update_profile/error.html', {'thumb_form': thumb_form})

Answer 1

这条线

MEDIA_ROOT = '/home/user/project/foo/yesno/static/media',

定义MEDIA_ROOT为元组.具体来说,由于尾随逗号,它使它成为单项元组:元组由逗号定义,而不是括号中通常认为的(空元组除外:-).

删除可能意外的尾随逗号,这个特殊的错误应该消失.