app/django/contrib/sessions/middleware.py
author Lennard de Rijk <ljvderijk@gmail.com>
Mon, 30 Mar 2009 21:16:18 +0000
changeset 2034 59de158c936d
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Fixed the duplicate slots view. The script would not clear the screen upon recalculation also the list of duplicates would increase with every iteration because the variables weren't properly reset. Patch by: Merio Ferraro, Lennard de Rijk Reviewed by: to-be-reviewed

import time

from django.conf import settings
from django.utils.cache import patch_vary_headers
from django.utils.http import cookie_date

class SessionMiddleware(object):
    def process_request(self, request):
        engine = __import__(settings.SESSION_ENGINE, {}, {}, [''])
        session_key = request.COOKIES.get(settings.SESSION_COOKIE_NAME, None)
        request.session = engine.SessionStore(session_key)

    def process_response(self, request, response):
        """
        If request.session was modified, or if the configuration is to save the
        session every time, save the changes and set a session cookie.
        """
        try:
            accessed = request.session.accessed
            modified = request.session.modified
        except AttributeError:
            pass
        else:
            if accessed:
                patch_vary_headers(response, ('Cookie',))
            if modified or settings.SESSION_SAVE_EVERY_REQUEST:
                if request.session.get_expire_at_browser_close():
                    max_age = None
                    expires = None
                else:
                    max_age = request.session.get_expiry_age()
                    expires_time = time.time() + max_age
                    expires = cookie_date(expires_time)
                # Save the session data and refresh the client cookie.
                request.session.save()
                response.set_cookie(settings.SESSION_COOKIE_NAME,
                        request.session.session_key, max_age=max_age,
                        expires=expires, domain=settings.SESSION_COOKIE_DOMAIN,
                        path=settings.SESSION_COOKIE_PATH,
                        secure=settings.SESSION_COOKIE_SECURE or None)
        return response