django在表单上传时同时向本地数据库保存文件的描述应该怎么办？

Question

key值暂时是自动的，代码如下，但是不能同时添加一个文件的描述，该怎么办？就在f.title那里添加文件描述

def upload_file(request):
    file = qiniu.rs.PutPolicy('dlpucsdn')
    file.returnUrl = "http://127.0.0.1:8000/src/receive"
    token = file.token()
    return render_to_response('uploader/upload.html',{'token':token,
                                               'request':request},
                          context_instance = RequestContext(request))

def receive_url(request):
    if request.method == 'GET':
        ret = request.GET['upload_ret']
        if ret:
            fileInfo = json.loads(base64.decodestring(ret))
            key = fileInfo['key']
            domain = 'dlpucsdn.qiniudn.com'
            base_url = qiniu.rs.make_base_url(domain, key)
            policy = qiniu.rs.GetPolicy()
            key = base64.encodestring(fileInfo['key'])
            print(key)
            private_url = policy.make_request(base_url)  # 获得下载地址
            f = files()
            f.auth = request.user
            f.title = 'world hello'
            f.url = private_url
            f.save()
            return HttpResponseRedirect(reverse('src_index',))
        return render_to_response('uploader/error.html')
    return render_to_response('uploader/error.html')

HTML模板如下

<form method="post"action="http://upload.qiniu.com/"enctype="multipart/form-data">
   {% csrf_token %}
     <p><input name="title" type="text" class="form-control" placeholder="文件描述（必填）"></p>
    <p><input name="token" type="hidden" value="{{ token }}"></p>
    <p><input name="file" type="file" class="form-control"></p>
    <input type="submit" value="上传" class="btn-info form-control" style="width: 100px;float: right">

Answer 1

根据我的理解，你是希望在上传的时候添加一个“文件描述”的自定义变量，你可以参考http://developer.qiniu.com/docs/v6/api/reference/up/upload.html当中的自定义变量的设置，边当中的文件描述最好修改成

<p><input name="x:title" type="text" class="form-control" value="文件描述（必填）"></p>

另外，你尝试修改一下extra

extra = io.PutExtra()
extra.mime_type = "text/plain"
extra.params = {'x:title': '文件描述（必填）'}