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annotate wiki/signals.py @ 627:a4300639c6e7

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Wiki integration. Create task to delete old cookie records. Rework logic upon logout, as session will not be available. Set an attribute on the request instead.
author Brian Neal <bgneal@gmail.com>
date Mon, 12 Nov 2012 15:10:52 -0600
parents a6bc1e2efa63
children f4c043cf55ac
rev   line source
bgneal@626 1 """Signal handlers for wiki integration.
bgneal@626 2
bgneal@626 3 """
bgneal@626 4 import logging
bgneal@626 5
bgneal@626 6 from django.contrib.auth.signals import user_logged_in, user_logged_out
bgneal@626 7
bgneal@627 8 from wiki.constants import SESSION_SET_FLAG, SESSION_SET_MEMBER
bgneal@626 9
bgneal@626 10 logger = logging.getLogger(__name__)
bgneal@626 11
bgneal@626 12
bgneal@626 13 def login_callback(sender, request, user, **kwargs):
bgneal@626 14 """Signal callback function for a user logging in.
bgneal@626 15
bgneal@626 16 Sets a flag for the middleware to create an external cookie.
bgneal@626 17
bgneal@626 18 """
bgneal@626 19 logger.info('User login: %s', user.username)
bgneal@626 20
bgneal@627 21 request.session[SESSION_SET_FLAG] = True
bgneal@626 22
bgneal@626 23
bgneal@626 24 def logout_callback(sender, request, user, **kwargs):
bgneal@626 25 """Signal callback function for a user logging in.
bgneal@626 26
bgneal@626 27 Sets a flag for the middleware to delete the external cookie.
bgneal@626 28
bgneal@627 29 Since the user is about to logout, her session will be wiped out after
bgneal@627 30 this function returns. This forces us to set an attribute on the request
bgneal@627 31 object so that the response middleware can delete the wiki's cookie.
bgneal@627 32
bgneal@626 33 """
bgneal@626 34 logger.info('User logout: %s', user.username)
bgneal@626 35
bgneal@627 36 # Remember what Redis set member to delete by adding an attribute to the
bgneal@627 37 # request object:
bgneal@627 38 request.wiki_delete_cookie = request.session.get(SESSION_SET_MEMBER)
bgneal@626 39
bgneal@626 40
bgneal@626 41 user_logged_in.connect(login_callback, dispatch_uid='wiki.signals.login')
bgneal@626 42 user_logged_out.connect(logout_callback, dispatch_uid='wiki.signals.logout')