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