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annotate gpp/forums/views/subscriptions.py @ 509:248dd8dd67f8

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For #237, use Redis as the source of posts for the RSS feeds to hopefully eliminate some slow queries.
author Brian Neal <bgneal@gmail.com>
date Wed, 07 Dec 2011 01:08:54 +0000
parents 9d3bd7304050
children 82b97697312e
rev   line source
bgneal@232 1 """This module handles the subscriptions of users to forum topics."""
bgneal@232 2 from django.conf import settings
bgneal@232 3 from django.contrib.auth.decorators import login_required
bgneal@232 4 from django.contrib.sites.models import Site
bgneal@232 5 from django.core.paginator import InvalidPage
bgneal@232 6 from django.core.urlresolvers import reverse
bgneal@232 7 from django.http import HttpResponseRedirect
bgneal@232 8 from django.http import Http404
bgneal@232 9 from django.template.loader import render_to_string
bgneal@232 10 from django.shortcuts import get_object_or_404
bgneal@232 11 from django.shortcuts import render_to_response
bgneal@232 12 from django.template import RequestContext
bgneal@232 13 from django.views.decorators.http import require_POST
bgneal@232 14
bgneal@386 15 from forums.models import Topic
bgneal@459 16 import forums.permissions as perms
bgneal@232 17 from core.functions import send_mail
bgneal@232 18 from core.paginator import DiggPaginator
bgneal@232 19
bgneal@232 20
bgneal@232 21 def notify_topic_subscribers(post):
bgneal@301 22 """
bgneal@301 23 The argument post is a newly created post. Send out an email
bgneal@301 24 notification to all subscribers of the post's parent Topic.
bgneal@301 25 """
bgneal@301 26 #TODO: consider moving this function of the HTTP request/response cycle.
bgneal@232 27
bgneal@232 28 topic = post.topic
bgneal@386 29 recipients = topic.subscribers.exclude(id=post.user.id).values_list(
bgneal@386 30 'email', flat=True)
bgneal@232 31
bgneal@232 32 if recipients:
bgneal@232 33 site = Site.objects.get_current()
bgneal@232 34 subject = "[%s] Topic Reply: %s" % (site.name, topic.name)
bgneal@232 35 url_prefix = "http://%s" % site.domain
bgneal@232 36 post_url = url_prefix + post.get_absolute_url()
bgneal@232 37 unsubscribe_url = url_prefix + reverse("forums-manage_subscriptions")
bgneal@232 38 msg = render_to_string("forums/topic_notify_email.txt", {
bgneal@232 39 'poster': post.user.username,
bgneal@232 40 'topic_name': topic.name,
bgneal@232 41 'message': post.body,
bgneal@232 42 'post_url': post_url,
bgneal@232 43 'unsubscribe_url': unsubscribe_url,
bgneal@232 44 })
bgneal@232 45 for recipient in recipients:
bgneal@232 46 send_mail(subject, msg, settings.DEFAULT_FROM_EMAIL, [recipient])
bgneal@232 47
bgneal@232 48
bgneal@232 49 @login_required
bgneal@232 50 @require_POST
bgneal@232 51 def subscribe_topic(request, topic_id):
bgneal@232 52 """Subscribe the user to the requested topic."""
bgneal@232 53 topic = get_object_or_404(Topic.objects.select_related(), id=topic_id)
bgneal@459 54 if perms.can_access(topic.forum.category, request.user):
bgneal@386 55 topic.subscribers.add(request.user)
bgneal@232 56 return HttpResponseRedirect(
bgneal@232 57 reverse("forums-subscription_status", args=[topic.id]))
bgneal@386 58 raise Http404
bgneal@232 59
bgneal@232 60
bgneal@232 61 @login_required
bgneal@232 62 @require_POST
bgneal@232 63 def unsubscribe_topic(request, topic_id):
bgneal@232 64 """Unsubscribe the user to the requested topic."""
bgneal@232 65 topic = get_object_or_404(Topic, id=topic_id)
bgneal@386 66 topic.subscribers.remove(request.user)
bgneal@232 67 return HttpResponseRedirect(
bgneal@232 68 reverse("forums-subscription_status", args=[topic.id]))
bgneal@232 69
bgneal@232 70
bgneal@232 71 @login_required
bgneal@232 72 def subscription_status(request, topic_id):
bgneal@232 73 """Display the subscription status for the given topic."""
bgneal@232 74 topic = get_object_or_404(Topic.objects.select_related(), id=topic_id)
bgneal@232 75 is_subscribed = request.user in topic.subscribers.all()
bgneal@232 76 return render_to_response('forums/subscription_status.html', {
bgneal@232 77 'topic': topic,
bgneal@232 78 'is_subscribed': is_subscribed,
bgneal@232 79 },
bgneal@232 80 context_instance=RequestContext(request))
bgneal@232 81
bgneal@232 82
bgneal@232 83 @login_required
bgneal@232 84 def manage_subscriptions(request):
bgneal@232 85 """Display a user's topic subscriptions, and allow them to be deleted."""
bgneal@232 86
bgneal@232 87 user = request.user
bgneal@232 88 if request.method == "POST":
bgneal@232 89 if request.POST.get('delete_all'):
bgneal@386 90 user.subscriptions.clear()
bgneal@232 91 else:
bgneal@232 92 delete_ids = request.POST.getlist('delete_ids')
bgneal@232 93 try:
bgneal@232 94 delete_ids = [int(id) for id in delete_ids]
bgneal@232 95 except ValueError:
bgneal@232 96 raise Http404
bgneal@232 97
bgneal@386 98 for topic in user.subscriptions.filter(id__in=delete_ids):
bgneal@386 99 user.subscriptions.remove(topic)
bgneal@232 100
bgneal@383 101 return HttpResponseRedirect(reverse("forums-manage_subscriptions"))
bgneal@383 102
bgneal@383 103 page_num = request.GET.get('page', 1)
bgneal@232 104 topics = user.subscriptions.select_related().order_by('-update_date')
bgneal@232 105 paginator = DiggPaginator(topics, 20, body=5, tail=2, margin=3, padding=2)
bgneal@232 106 try:
bgneal@232 107 page_num = int(page_num)
bgneal@232 108 except ValueError:
bgneal@232 109 page_num = 1
bgneal@232 110 try:
bgneal@232 111 page = paginator.page(page_num)
bgneal@232 112 except InvalidPage:
bgneal@232 113 raise Http404
bgneal@232 114
bgneal@232 115 return render_to_response('forums/manage_topics.html', {
bgneal@232 116 'page_title': 'Topic Subscriptions',
bgneal@232 117 'description': 'The forum topics you are currently subscribed to are listed below.',
bgneal@232 118 'page': page,
bgneal@232 119 },
bgneal@232 120 context_instance=RequestContext(request))