如何在Django模板中发布隐藏的FileField？

我正在尝试处理在Django中上传文件，我遇到了麻烦 . 我的目标是创建一个表单，允许用户上传文本和文件数据，预览输入，然后发布它 .

我将所有逻辑放在一个视图中，其中多个模板与各种提交按钮相关联 . 我不想保存所有实例，然后为已发布的帖子创建自定义管理器 . 但是，也许我应该这样做 .

我的问题是我的文件formset无法正常工作 . 当我刚刚提交数据而没有预览时，它很好 . 但是，有一次，我开始POST回到不同的模板，它停止工作 . 我知道你想在POST后想要HttpResponseRedirect，但我认为我的方法在这种情况下很好 . 老实说，我没有任何线索 .

这是我的观点逻辑

def post(request):
    page="post"
#check if user has already posted and if so, direct them to their account post history page
try:
    user=User.objects.get(pk=request.user.id)
except User.DoesNotExist:   
    user=''
if user:
    try:
        post=user.post_set.all()[0]
        return HttpResponseRedirect("/profile/post/")

    #Here a user who has not posted is shown a form to do so
    except IndexError:
        postform=PostForm(prefix="post")
        PhotoFormSet=modelformset_factory(Post_Photo,exclude=('post',), extra=4, max_num=4)
        photo_formset=PhotoFormSet(queryset=Post_Photo.objects.filter(post__lt=0),prefix="photos")  #lt 0 is a hack to return an empty query set, so that other photos aren't returned with the form

#Here an anonymous user sees the form, though they can't successfully submit
else:
    postform=PostForm(prefix="post")
    PhotoFormSet=modelformset_factory(Post_Photo,exclude=('post',), extra=4, max_num=4)
    photo_formset=PhotoFormSet(queryset=Post_Photo.objects.filter(post__lt=0),prefix="photos")


if request.method=='POST' and user and request.POST.get('preview'):     
    photo_formset=PhotoFormSet(request.POST, request.FILES, prefix="photos")
    postform=PostForm(request.POST,prefix="post")
    if postform.is_valid() and photo_formset.is_valid():
        post=postform.save(commit=False)
        photos=photo_formset.save(commit=False)
        return render_to_response('website/preview_post.html', {'page':page,'post':post,'photos':photos,'photo_formset':photo_formset}, context_instance=RequestContext(request))
    else:
        return HttpResponse('error test')


if request.method=='POST' and user and request.POST.get('edit'):
    photo_formset=PhotoFormSet(request.POST, request.FILES, prefix="photos")
    postform=PostForm(request.POST,prefix="post")
    neighborhood=request.POST.get('post-neighborhood','')
    if postform.is_valid() and photo_formset.is_valid():
        return render_to_response('website/post_upload.html', {'page':page, 'neighborhood':neighborhood,'postform':postform, 'photo_formset':photo_formset}, context_instance=RequestContext(request))
    else:
        return HttpResponse(postform.errors)


if request.method=='POST' and user and request.POST.get('publish'):     
    photo_formset=PhotoFormSet(request.POST, request.FILES, prefix="photos")
    postform=PostForm(request.POST,prefix="post")
    if postform.is_valid() and photo_formset.is_valid():
        post=postform.save(commit=False)
        post.user=user
        post.save()
        photos=photo_formset.save(commit=False)
        for photo in photos:
            photo.post=post
            photo.save()
        return HttpResponse('/post_upload/?success=1')
    else:
        return HttpResponse('%s' %postform.errors)
return render_to_response("website/post_upload.html", {'page':page,'postform':postform,'photo_formset':photo_formset}, context_instance=RequestContext(request))

在我的预览模板中，我包含隐藏的输入，然后将其发送回编辑页面或发布 . 我的photo_formset包含在带有display：none属性的div中，因此它是不可见的 .

当我从编辑页面POST时，隐藏的文本输入通过，但FILE输入没有 . 我该怎么办？

谢谢