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annotate wiki/signals.py @ 793:fa7377d90160

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Issue #71: in production, celeryd now needs tools on the PYTHONPATH. This is because it is now using site markup, which requires our Markdown extensions.
author Brian Neal <bgneal@gmail.com>
date Mon, 26 May 2014 19:34:49 -0500
parents 63603e931503
children
rev   line source
bgneal@626 1 """Signal handlers for wiki integration.
bgneal@626 2
bgneal@629 3 We are interested in hearing about users logging in and out, so we can create
bgneal@629 4 and destroy an external cookie to allow access to the wiki.
bgneal@629 5
bgneal@626 6 """
bgneal@626 7 import logging
bgneal@626 8
bgneal@626 9 from django.contrib.auth.signals import user_logged_in, user_logged_out
bgneal@626 10
bgneal@629 11 from wiki.constants import SESSION_SET_MEMBER
bgneal@626 12
bgneal@626 13 logger = logging.getLogger(__name__)
bgneal@626 14
bgneal@626 15
bgneal@626 16 def login_callback(sender, request, user, **kwargs):
bgneal@626 17 """Signal callback function for a user logging in.
bgneal@626 18
bgneal@626 19 Sets a flag for the middleware to create an external cookie.
bgneal@626 20
bgneal@626 21 """
bgneal@626 22 logger.info('User login: %s', user.username)
bgneal@626 23
bgneal@629 24 request.wiki_set_cookie = True
bgneal@626 25
bgneal@626 26
bgneal@626 27 def logout_callback(sender, request, user, **kwargs):
bgneal@626 28 """Signal callback function for a user logging in.
bgneal@626 29
bgneal@626 30 Sets a flag for the middleware to delete the external cookie.
bgneal@626 31
bgneal@627 32 Since the user is about to logout, her session will be wiped out after
bgneal@627 33 this function returns. This forces us to set an attribute on the request
bgneal@627 34 object so that the response middleware can delete the wiki's cookie.
bgneal@627 35
bgneal@626 36 """
bgneal@630 37 if user:
bgneal@630 38 logger.info('User logout: %s', user.username)
bgneal@626 39
bgneal@630 40 # Remember what Redis set member to delete by adding an attribute to the
bgneal@630 41 # request object:
bgneal@630 42 request.wiki_delete_cookie = request.session.get(SESSION_SET_MEMBER)
bgneal@626 43
bgneal@626 44
bgneal@626 45 user_logged_in.connect(login_callback, dispatch_uid='wiki.signals.login')
bgneal@626 46 user_logged_out.connect(logout_callback, dispatch_uid='wiki.signals.logout')