django动态压缩文件和下载

Question

假设“mylist”包含字符串“audio”或“video”或两者。基于“mylist”中的字符串将确定哪些文件被压缩并返回到发出http请求的位置。当我发送我的http请求时，没有下载弹出窗口。我是否错误地将文件路径发送到zip函数？

views.py

from django.http import HttpResponse
from django import http
from zipfile import ZipFile
from StringIO import StringIO
from django.core.servers.basehttp import FileWrapper

def zip (filenames):
  buffer= StringIO.StringIO()
  z= zipfile.ZipFile( buffer, "w" )
  [z.writestr(f) for f in filenames]
  z.close()
  # generate the file
  zippedfiles = HttpResponse(FileWrapper(z), content_type='application/zip')
  zippedfiles['Content-Disposition'] = 'attachment; filename=z.zip'
  return zippedfiles

def main(request):
  if request.method == 'POST':
    mylist = request.POST.getlist('list')
    files = []
    for item in mylist:
      if item == 'video':
        files.append('/home/dbs/public_html/download/video.html')
      elif item == 'audio':
        files.append('/home/dbs/public_html/download/audio.html')
      zipped = zip(files)
      return zipped
  else:
    return http.HttpResponseForbidden()