Destroying file after HTTP response in Django

Question

I'm now making website that downloads certain images from other website, zip files, and let users download the zip file.

Everything works great, but I have no way to delete zip file from server, which has to be deleted after users download it.

I tried deleting temp directory that contains zip file with shutil.rmtree, but I couldn't find way to run it after HTTPResponse.

Here is my code in views.py.

    zipdir = condown(idx)#condown creates zip file in zipdir
    logging.info(os.path.basename(zipdir))
    if os.path.exists(zipdir):
        with open(zipdir, 'rb') as fh:
            response = HttpResponse(fh.read(), content_type="multipart/form-data")
            response['Content-Disposition'] = 'inline; filename=download.zip'
            return response
    raise Http404

Thanks in advance.

Hi 류형석, have you seen this [question](https://stackoverflow.com/q/34149274/5675325)? — Tiago Martins Peres, Oct 27 '19 at 16:59
Yes. But in my case, I should remove 'existing' 'folder'. I'm not sure the question can be applied in my case. — devingryu, Oct 27 '19 at 17:11
And [this one](https://stackoverflow.com/q/3582414/5675325)? — Tiago Martins Peres, Oct 27 '19 at 17:34

score 0 · Accepted Answer · answered Oct 27 '19 at 18:25

You should looks to Celery project. It allows to schedule delayed function calls (after response generated).
So you can read that file to a variable and schedule task to remove that file.

# views.py
def some_view(request):
    zipdir = condown(idx)#condown creates zip file in zipdir
    logging.info(os.path.basename(zipdir))
    response = HttpResponseNotFound()
    if os.path.exists(zipdir):
        with open(zipdir, 'rb') as fh:
            response = HttpResponse(fh.read(), content_type="multipart/form-data")
            response['Content-Disposition'] = 'inline; filename=download.zip'

    task_delete_zipfile.delay(zipdir)
    return response


# tasks.py
import os
from webapp.celery import app

@app.task
def task_delete_zipfile(filePath):
    if os.path.exists(filePath):
        os.remove(filePath)
    else:
        print("Can not delete the file as it doesn't exists")

Destroying file after HTTP response in Django

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