jquery ajax 提交form表单 以及django后台接受

          <form id="project_file_upload" enctype="multipart/form-data" >
              <div class="modal-body">
                   <!-- multiple 增加此属性，文件可以多选 -->
                   <input type="file"  name="file" id="file">
                   <input id = 'num_id' name="id" type="hidden" value="">
              </div>
              <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">{% trans "Close" %}</button>
                <button class="btn btn-success" type="submit" id="submit_upload_b"><i class="icon-share"></i> 上传</button>
              </div>
         {% csrf_token %}
         </form>

   //文件上传函数
   function dispalyfiletable(url) {
        var csrftoken = getCookie('csrftoken');
        $.ajax({
            cache: false,
            type: 'POST',
            data: new FormData($('#project_file_upload')[0]),
            url: url,
            traditional:true, //为必须内容 　　
            //dataType:'json',  //data为json时必须
            processData: false, //为必须内容
            contentType: false, //为必须内容
            success: function(data) {

               console.log(data);



            },
            beforeSend: function(xhr, settings) {
                xhr.setRequestHeader("X-CSRFToken", csrftoken);
            }
        });
   }

from django import forms
from django.forms import ModelForm
from .models import Advertisement


class UploadFileForm(ModelForm):

    class Meta:
        model = Advertisement
        localized_fields = ('__all__')

        exclude = ['add_time']
        error_messages = {
            'protype': {
                'required': '这是个必填项目',  # 生成错误信息
            },
        }

        id = request.POST.get('id','')
        print(id)
        form = UploadFileForm(request.POST, request.FILES)
        file_obj = request.FILES.get('file','') #获取上传文件