在django中返回HttpResponse后删除tmp文件 [英] Removing tmp file after return HttpResponse in django

问题描述

我使用以下django / python代码将文件流式传输到浏览器：

I'm using the following django/python code to stream a file to the browser:

wrapper = FileWrapper(file(path))
response = HttpResponse(wrapper, content_type='text/plain')
response['Content-Length'] = os.path.getsize(path)
return response

在返回响应后有没有办法删除文件？使用回调函数还是什么？
我可以做一个cron来删除所有的tmp文件，但是如果我可以从同一个请求中流式传输文件并删除它们，那将会更加简单。

Is there a way to delete the file after the reponse is returned? Using a callback function or something? I could just make a cron to delete all tmp files, but it would be neater if I could stream files and delete them as well from the same request.

推荐答案

您可以使用NamedTemporaryFile：

You can use a NamedTemporaryFile:

from django.core.files.temp import NamedTemporaryFile
def send_file(request):
    newfile = NamedTemporaryFile(suffix='.txt')
    # save your data to newfile.name
    wrapper = FileWrapper(newfile)
    response = HttpResponse(wrapper, content_type=mime_type)
    response['Content-Disposition'] = 'attachment; filename=%s' % os.path.basename(modelfile.name)
    response['Content-Length'] = os.path.getsize(modelfile.name)
    return response

一旦新文件对象被驱逐，临时文件应该被删除。

temporary file should be deleted once the newfile object is evicted.

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