Mercurial > public > sg101

comparison gpp/forums/subscriptions.py @ 181:500e5875a306

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implementing #61: adding a forum topic subscription feature.
author Brian Neal <bgneal@gmail.com>
date Sun, 28 Mar 2010 01:07:47 +0000
parents
children
comparison
equal deleted inserted replaced
180:aef00df91165 181:500e5875a306
1 """This module handles the subscriptions of users to forum topics."""
2 from django.conf import settings
3 from django.contrib.auth.decorators import login_required
4 from django.contrib.sites.models import Site
5 from django.core.paginator import InvalidPage
6 from django.core.urlresolvers import reverse
7 from django.http import HttpResponseRedirect
8 from django.http import Http404
9 from django.template.loader import render_to_string
10 from django.shortcuts import get_object_or_404
11 from django.shortcuts import render_to_response
12 from django.template import RequestContext
13 from django.views.decorators.http import require_POST
14
15 from forums.models import Topic
16 from core.functions import send_mail
17 from core.paginator import DiggPaginator
18
19
20 def notify_topic_subscribers(post):
21 """The argument post is a newly created post. Send out an email
22 notification to all subscribers of the post's parent Topic."""
23
24 topic = post.topic
25 recipients = topic.subscribers.exclude(
26 id=post.user.id).values_list('email', flat=True)
27
28 if recipients:
29 site = Site.objects.get_current()
30 subject = "[%s] Topic Reply: %s" % (site.name, topic.name)
31 url_prefix = "http://%s" % site.domain
32 post_url = url_prefix + post.get_absolute_url()
33 unsubscribe_url = url_prefix + reverse("forums-manage_subscriptions")
34 msg = render_to_string("forums/topic_notify_email.txt", {
35 'poster': post.user.username,
36 'topic_name': topic.name,
37 'message': post.body,
38 'post_url': post_url,
39 'unsubscribe_url': unsubscribe_url,
40 })
41 for recipient in recipients:
42 send_mail(subject, msg, settings.DEFAULT_FROM_EMAIL, [recipient])
43
44
45 @login_required
46 @require_POST
47 def subscribe_topic(request, topic_id):
48 """Subscribe the user to the requested topic."""
49 topic = get_object_or_404(Topic.objects.select_related(), id=topic_id)
50 if topic.forum.category.can_access(request.user):
51 topic.subscribers.add(request.user)
52 return HttpResponseRedirect(
53 reverse("forums-subscription_status", args=[topic.id]))
54 raise Http404
55
56
57 @login_required
58 @require_POST
59 def unsubscribe_topic(request, topic_id):
60 """Unsubscribe the user to the requested topic."""
61 topic = get_object_or_404(Topic, id=topic_id)
62 topic.subscribers.remove(request.user)
63 return HttpResponseRedirect(
64 reverse("forums-subscription_status", args=[topic.id]))
65
66
67 @login_required
68 def subscription_status(request, topic_id):
69 """Display the subscription status for the given topic."""
70 topic = get_object_or_404(Topic.objects.select_related(), id=topic_id)
71 is_subscribed = request.user in topic.subscribers.all()
72 return render_to_response('forums/subscription_status.html', {
73 'topic': topic,
74 'is_subscribed': is_subscribed,
75 },
76 context_instance=RequestContext(request))
77
78
79 @login_required
80 def manage_subscriptions(request):
81 """Display a user's topic subscriptions, and allow them to be deleted."""
82
83 user = request.user
84 if request.method == "POST":
85 if request.POST.get('delete_all'):
86 user.subscriptions.clear()
87 else:
88 delete_ids = request.POST.getlist('delete_ids')
89 try:
90 delete_ids = [int(id) for id in delete_ids]
91 except ValueError:
92 raise Http404
93 for topic in user.subscriptions.filter(id__in=delete_ids):
94 user.subscriptions.remove(topic)
95
96 page_num = request.POST.get('page', 1)
97 else:
98 page_num = request.GET.get('page', 1)
99
100 topics = user.subscriptions.select_related().order_by('-creation_date')
101 paginator = DiggPaginator(topics, 20, body=5, tail=2, margin=3, padding=2)
102 try:
103 page_num = int(page_num)
104 except ValueError:
105 page_num = 1
106 try:
107 page = paginator.page(page_num)
108 except InvalidPage:
109 raise Http404
110
111 return render_to_response('forums/manage_subscriptions.html', {
112 'page': page,
113 },
114 context_instance=RequestContext(request))