How to delete file after user download with bottle framework...?

Question

I use python with bottle framework. When the user clicks a button, the server should generate file and let the user download it. When the user downloads it completely, the server should delete this file.

Is there any way to achieve this?

I found some information,look like should use hooks plugin ...? But, I can't understand how to use it... — KBKai, Sep 22 '15 at 06:51
Well, here is Stack Overflow. So I think you should Google your question first. And try to write some code. If your run your code and got an error, then you can ask here. — Remi Guan, Sep 22 '15 at 06:56
I tried google my question first, but lots of result about flask framework... — KBKai, Sep 22 '15 at 07:09
Hmm...you're right. But I think you still doesn't ask some question like this...Let me search about this again. — Remi Guan, Sep 22 '15 at 07:21
So your problem is that you can't know the browser has finished downloaded the file or the file is downloading right? I've just see [the tutorial](http://bottlepy.org/docs/dev/tutorial.html) and I can't find any helpful things. — Remi Guan, Sep 22 '15 at 07:28
OK... thanks for your response. I will apply for delete this question. — KBKai, Sep 22 '15 at 07:35
I think you can keep this question, however this is a difficult question :) — Remi Guan, Sep 22 '15 at 07:36
Yes, you are right. I don't know how to do function after browser request. — KBKai, Sep 22 '15 at 07:37

score 0 · Answer 1 · edited May 23 '17 at 11:44

I found the way by this page (flask solution) and this page(hooks plugin) and this page(Forced Download).

this is my solution:

put hook "after_request" function into route function

part of my code:

download page templete (only one button):

<form id="export" calss="etable" method="POST" action="/download">
    <input type="submit" name="export" value="export">  
</form>

download page

@route('/download')
def download():
    output = template('download',template_lookup=['./views'])       
    return output

click button(generate file and redirect to download)

@route('/download',method = 'POST')
def downloadPost():
    zipname = zipFolder('./temp') #create files
    if zipname is not None:
        return redirect('/download/'+zipname)
    else:
        abort(500,'error.')

Forced Download function (put hook in this part.)

@route('/download/<filename:path>')
def download_file(filename):
    @hook('after_request')
    def delFiles():
        del('./temp/',filename) #delete file function       
    return static_file(filename, root='./temp/', download=filename)

How to delete file after user download with bottle framework...?

1 Answers1