Django clear request session value if user navigates away from certain pages

Question

I need to clear request session variable each time user navigates from certain pages.

I was thinking writing my own middleware for such thing and to implement process_request to clear the variable when needed.

what do you think?

do you know better solution?

would it damage performance instantly?

10x

Answer 1

You can use the request_finished signal to detect an HTTP request and trigger a function to get the current page's path to check if the user has navigated to a different page. If they have, then you can call flush() on the session, or set a specific session var to nil, etc.

Something like:

from django.core.signals import request_finished

def check_url(request):
    original_path = '/path_to_original_page'
    if HttpRequest.get_full_path(request) != original_path:
        request.session.flush()

request_finshed.connect(check_url, sender)

Take a look at the docs on Signals and Sessions for more information. I don't think writing your own middleware for this is necessary, but choose whatever suits your needs.