Auto Logout Middleware

from django.conf import settings
from django.contrib import auth
from datetime import datetime, timedelta

class AutoLogout:
  def process_request(self, request):
    if not request.user.is_authenticated() :
      #Can't log out if not logged in
      return

    try:
      if datetime.now() - request.session['last_touch'] > timedelta( 0, settings.AUTO_LOGOUT_DELAY * 60, 0):
        auth.logout(request)
        del request.session['last_touch']
        return
    except KeyError:
      pass

    request.session['last_touch'] = datetime.now()

This Middleware is to log users out after a certain amount of time has passed. You'll want to add AUTO_LOGOUT_DELAY to your settings.py, set to a number of minutes after which a user should be logged out.

It adds the key 'last_touch' to the session, you'll want to change that if you happen to be using that already.

Author:: LuckiDog
Posted:: October 19, 2007
Language:: Python
Tags:: auth logout middleware
Score:: 4 (after 4 ratings)

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david_bgk (on October 22, 2007):

Thanks for this snippet, an import is missing:

from django.contrib import auth

LuckiDog (on October 24, 2007):

Thanks, I've updated the code.

kmajbar (on November 25, 2007):

Hello,

I get the following error when I try to use your middleware :

----------------------------------------------------------

Traceback (most recent call last):

  File "/var/lib/python-support/python2.5/django/core/servers/basehttp.py", line 272, in run
    self.result = application(self.environ, self.start_response)

  File "/var/lib/python-support/python2.5/django/core/servers/basehttp.py", line 614, in __call__
    return self.application(environ, start_response)

  File "/var/lib/python-support/python2.5/django/core/handlers/wsgi.py", line 184, in __call__
    self.load_middleware()

  File "/var/lib/python-support/python2.5/django/core/handlers/base.py", line 35, in load_middleware
    raise exceptions.ImproperlyConfigured, 'Middleware module "%s" does not define a "%s" class' % (mw_module, mw_classname)

ImproperlyConfigured: Middleware module "WebGui" does not define a "AutoLogout" class

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WebGui is my project and in it's settings.py I added 'WebGui.AutoLogout', in the middlware conf like so :

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.middleware.doc.XViewMiddleware',
    'WebGui.AutoLogout',
)

and I also added:

AUTO_LOGOUT_DELAY=1

to settings.py like you said. Did I do something wrong?

Thank you, Kenza

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Auto Logout Middleware

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