Mercurial > public > sg101

annotate gpp/core/middleware.py @ 227:423c39ee44e0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rework the who's online middleware and template tag for #87.
author Brian Neal <bgneal@gmail.com>
date Tue, 06 Jul 2010 03:02:20 +0000
parents 8c1832b9d815
children 08b30ac04580
rev   line source
bgneal@215 1 """Common middleware for the entire project."""
bgneal@227 2 import datetime
bgneal@227 3
bgneal@215 4 from django.contrib.auth import logout
bgneal@227 5 from django.conf import settings
bgneal@227 6
bgneal@227 7 from core.models import UserLastVisit
bgneal@227 8 from core.models import AnonLastVisit
bgneal@227 9 from core.functions import get_ip
bgneal@227 10
bgneal@215 11
bgneal@215 12 class InactiveUserMiddleware(object):
bgneal@215 13 """
bgneal@215 14 This middleware ensures users with is_active set to False get their
bgneal@215 15 session destroyed and are treated as logged out.
bgneal@215 16 This middleware should come after the 'django.contrib.auth.middleware.
bgneal@215 17 AuthenticationMiddleware' in settings.py.
bgneal@215 18 Idea taken from: http://djangosnippets.org/snippets/1105/
bgneal@215 19 """
bgneal@215 20
bgneal@227 21 def process_view(self, request, view_func, view_args, view_kwargs):
bgneal@215 22 if request.user.is_authenticated() and not request.user.is_active:
bgneal@215 23 logout(request)
bgneal@215 24
bgneal@227 25
bgneal@227 26 ONLINE_COOKIE = 'sg101_online' # online cookie name
bgneal@227 27 ONLINE_TIMEOUT = 10 * 60 # online cookie lifetime in seconds
bgneal@227 28
bgneal@227 29 class WhosOnline(object):
bgneal@227 30 """
bgneal@227 31 This middleware class keeps track of which registered users have
bgneal@227 32 been seen recently, and the number of unique unregistered users.
bgneal@227 33 This middleware should come after the authentication middleware,
bgneal@227 34 as we count on the user attribute being attached to the request.
bgneal@227 35 """
bgneal@227 36
bgneal@227 37 def process_response(self, request, response):
bgneal@227 38 """
bgneal@227 39 Keep track of who is online.
bgneal@227 40 """
bgneal@227 41 if request.is_ajax():
bgneal@227 42 return
bgneal@227 43
bgneal@227 44 if request.user.is_authenticated():
bgneal@227 45 if request.COOKIES.get(ONLINE_COOKIE) is None:
bgneal@227 46 # update the last seen timestamp
bgneal@227 47 try:
bgneal@227 48 ulv = UserLastVisit.objects.get(user=request.user)
bgneal@227 49 except UserLastVisit.DoesNotExist:
bgneal@227 50 ulv = UserLastVisit(user=request.user)
bgneal@227 51
bgneal@227 52 ulv.last_visit = datetime.datetime.now()
bgneal@227 53 ulv.save()
bgneal@227 54
bgneal@227 55 # set a cookie to expire in 10 minutes or so
bgneal@227 56 response.set_cookie(ONLINE_COOKIE, '1', max_age=ONLINE_TIMEOUT)
bgneal@227 57 else:
bgneal@227 58 if request.COOKIES.get(settings.CSRF_COOKIE_NAME) is not None:
bgneal@227 59 # We have a non-authenticated user that has cookies enabled. This
bgneal@227 60 # means we can track them.
bgneal@227 61 if request.COOKIES.get(ONLINE_COOKIE) is None:
bgneal@227 62 # update the timestamp for this anonymous visitor
bgneal@227 63 ip = get_ip(request)
bgneal@227 64 if ip:
bgneal@227 65 try:
bgneal@227 66 alv = AnonLastVisit.objects.get(ip=ip)
bgneal@227 67 except AnonLastVisit.DoesNotExist:
bgneal@227 68 alv = AnonLastVisit(ip=ip)
bgneal@227 69
bgneal@227 70 alv.last_visit = datetime.datetime.now()
bgneal@227 71 alv.save()
bgneal@227 72
bgneal@227 73 # set a cookie to expire in 10 minutes or so
bgneal@227 74 response.set_cookie(ONLINE_COOKIE, '1', max_age=ONLINE_TIMEOUT)
bgneal@227 75
bgneal@227 76 return response