bgneal@232: """
bgneal@232: Views for the forums application.
bgneal@680: 
bgneal@232: """
bgneal@329: import collections
bgneal@232: import datetime
bgneal@232: 
bgneal@232: from django.contrib.auth.decorators import login_required
bgneal@232: from django.contrib.auth.models import User
bgneal@232: from django.http import Http404
bgneal@232: from django.http import HttpResponse
bgneal@232: from django.http import HttpResponseBadRequest
bgneal@232: from django.http import HttpResponseForbidden
bgneal@232: from django.http import HttpResponseRedirect
bgneal@232: from django.core.urlresolvers import reverse
bgneal@232: from django.core.paginator import InvalidPage
bgneal@232: from django.shortcuts import get_object_or_404
bgneal@1031: from django.shortcuts import render
bgneal@232: from django.template.loader import render_to_string
bgneal@232: from django.views.decorators.http import require_POST
bgneal@232: from django.db.models import F
bgneal@232: 
bgneal@459: import antispam
bgneal@459: import antispam.utils
bgneal@791: from bio.models import BadgeOwnership
bgneal@232: from core.paginator import DiggPaginator
bgneal@566: from core.functions import email_admins, quote_message
bgneal@232: 
bgneal@459: from forums.models import (Forum, Topic, Post, FlaggedPost, TopicLastVisit,
bgneal@791:         ForumLastVisit)
bgneal@459: from forums.forms import (NewTopicForm, NewPostForm, PostForm, MoveTopicForm,
bgneal@459:         SplitTopicForm)
bgneal@459: from forums.unread import (get_forum_unread_status, get_topic_unread_status,
bgneal@459:         get_post_unread_status, get_unread_topics)
bgneal@459: 
bgneal@459: import forums.permissions as perms
bgneal@469: from forums.signals import (notify_new_topic, notify_updated_topic,
bgneal@469:         notify_new_post, notify_updated_post)
bgneal@522: from forums.latest import get_latest_topic_ids
bgneal@232: 
bgneal@232: #######################################################################
bgneal@232: 
bgneal@232: TOPICS_PER_PAGE = 50
bgneal@232: POSTS_PER_PAGE = 20
bgneal@263: FEED_BASE = '/feeds/forums/'
bgneal@263: FORUM_FEED = FEED_BASE + '%s/'
bgneal@232: 
bgneal@232: 
bgneal@232: def get_page_num(request):
bgneal@232:     """Returns the value of the 'page' variable in GET if it exists, or 1
bgneal@232:     if it does not."""
bgneal@232: 
bgneal@232:     try:
bgneal@232:         page_num = int(request.GET.get('page', 1))
bgneal@232:     except ValueError:
bgneal@232:         page_num = 1
bgneal@232: 
bgneal@232:     return page_num
bgneal@232: 
bgneal@232: 
bgneal@232: def create_topic_paginator(topics):
bgneal@232:    return DiggPaginator(topics, TOPICS_PER_PAGE, body=5, tail=2, margin=3, padding=2)
bgneal@232: 
bgneal@232: def create_post_paginator(posts):
bgneal@232:    return DiggPaginator(posts, POSTS_PER_PAGE, body=5, tail=2, margin=3, padding=2)
bgneal@232: 
bgneal@232: 
bgneal@232: def attach_topic_page_ranges(topics):
bgneal@232:     """Attaches a page_range attribute to each topic in the supplied list.
bgneal@232:     This attribute will be None if it is a single page topic. This is used
bgneal@232:     by the templates to generate "goto page x" links.
bgneal@232:     """
bgneal@232:     for topic in topics:
bgneal@232:         if topic.post_count > POSTS_PER_PAGE:
bgneal@286:             pp = DiggPaginator(range(topic.post_count), POSTS_PER_PAGE,
bgneal@232:                     body=2, tail=3, margin=1)
bgneal@232:             topic.page_range = pp.page(1).page_range
bgneal@232:         else:
bgneal@232:             topic.page_range = None
bgneal@232: 
bgneal@232: #######################################################################
bgneal@232: 
bgneal@232: def index(request):
bgneal@232:     """
bgneal@232:     This view displays all the forums available, ordered in each category.
bgneal@232:     """
bgneal@232:     public_forums = Forum.objects.public_forums()
bgneal@263:     feeds = [{'name': 'All Forums', 'feed': FEED_BASE}]
bgneal@232: 
bgneal@232:     forums = Forum.objects.forums_for_user(request.user)
bgneal@232:     get_forum_unread_status(forums, request.user)
bgneal@232:     cats = {}
bgneal@232:     for forum in forums:
bgneal@232:         forum.has_feed = forum in public_forums
bgneal@232:         if forum.has_feed:
bgneal@232:             feeds.append({
bgneal@232:                 'name': '%s Forum' % forum.name,
bgneal@263:                 'feed': FORUM_FEED % forum.slug,
bgneal@232:                 })
bgneal@232: 
bgneal@232:         cat = cats.setdefault(forum.category.id, {
bgneal@232:             'cat': forum.category,
bgneal@232:             'forums': [],
bgneal@232:             })
bgneal@232:         cat['forums'].append(forum)
bgneal@232: 
bgneal@232:     cmpdef = lambda a, b: cmp(a['cat'].position, b['cat'].position)
bgneal@232:     cats = sorted(cats.values(), cmpdef)
bgneal@232: 
bgneal@1031:     return render(request, 'forums/index.html', {
bgneal@232:         'cats': cats,
bgneal@232:         'feeds': feeds,
bgneal@1161:         'V3_DESIGN': True,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: def forum_index(request, slug):
bgneal@232:     """
bgneal@232:     Displays all the topics in a forum.
bgneal@232:     """
bgneal@232:     forum = get_object_or_404(Forum.objects.select_related(), slug=slug)
bgneal@232: 
bgneal@459:     if not perms.can_access(forum.category, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@263:     feed = None
bgneal@263:     if not forum.category.groups.all():
bgneal@263:         feed = {
bgneal@263:             'name': '%s Forum' % forum.name,
bgneal@263:             'feed': FORUM_FEED % forum.slug,
bgneal@263:         }
bgneal@263: 
bgneal@232:     topics = forum.topics.select_related('user', 'last_post', 'last_post__user')
bgneal@232:     paginator = create_topic_paginator(topics)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232: 
bgneal@328:     get_topic_unread_status(forum, page.object_list, request.user)
bgneal@232:     attach_topic_page_ranges(page.object_list)
bgneal@232: 
bgneal@459:     can_moderate = perms.can_moderate(forum, request.user)
bgneal@286: 
bgneal@1031:     return render(request, 'forums/forum_index.html', {
bgneal@232:         'forum': forum,
bgneal@263:         'feed': feed,
bgneal@232:         'page': page,
bgneal@232:         'can_moderate': can_moderate,
bgneal@1161:         'V3_DESIGN': True,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: def topic_index(request, id):
bgneal@232:     """
bgneal@232:     Displays all the posts in a topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(
bgneal@232:         'forum', 'forum__category', 'last_post'), pk=id)
bgneal@232: 
bgneal@459:     if not perms.can_access(topic.forum.category, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@232:     topic.view_count = F('view_count') + 1
bgneal@232:     topic.save(force_update=True)
bgneal@232: 
bgneal@791:     posts = topic.posts.\
bgneal@791:                 select_related('user', 'user__profile').\
bgneal@791:                 prefetch_related('attachments')
bgneal@232: 
bgneal@232:     paginator = create_post_paginator(posts)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232:     get_post_unread_status(topic, page.object_list, request.user)
bgneal@232: 
bgneal@791:     # Get the BadgeOwnership & Badges for each user who has posted in the
bgneal@791:     # thread. This is done to save SQL queries in the template.
bgneal@232: 
bgneal@445:     last_post_on_page = None
bgneal@791:     profile_ids = []
bgneal@232:     for post in page.object_list:
bgneal@445:         last_post_on_page = post
bgneal@791:         profile_ids.append(post.user.profile.pk)
bgneal@285: 
bgneal@791:     bo_qs = BadgeOwnership.objects.filter(profile__in=profile_ids).\
bgneal@791:                 select_related()
bgneal@329:     bos = collections.defaultdict(list)
bgneal@791:     for bo in bo_qs:
bgneal@791:         bos[bo.profile.pk].append(bo)
bgneal@329: 
bgneal@791:     for post in page.object_list:
bgneal@791:         post.user.profile.badge_ownership = bos[post.user.profile.pk]
bgneal@232: 
bgneal@232:     last_page = page_num == paginator.num_pages
bgneal@232: 
bgneal@445:     if request.user.is_authenticated():
bgneal@445:         if last_page or last_post_on_page is None:
bgneal@445:             visit_time = datetime.datetime.now()
bgneal@445:         else:
bgneal@445:             visit_time = last_post_on_page.creation_date
bgneal@445:         _update_last_visit(request.user, topic, visit_time)
bgneal@232: 
bgneal@232:     # we do this for the template since it is rendered twice
bgneal@232:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@232: 
bgneal@459:     can_moderate = perms.can_moderate(topic.forum, request.user)
bgneal@232: 
bgneal@232:     can_reply = request.user.is_authenticated() and (
bgneal@232:         not topic.locked or can_moderate)
bgneal@232: 
bgneal@232:     is_favorite = request.user.is_authenticated() and (
bgneal@232:             topic in request.user.favorite_topics.all())
bgneal@232: 
bgneal@232:     is_subscribed = request.user.is_authenticated() and (
bgneal@232:             topic in request.user.subscriptions.all())
bgneal@232: 
bgneal@1031:     return render(request, 'forums/topic.html', {
bgneal@232:         'forum': topic.forum,
bgneal@232:         'topic': topic,
bgneal@232:         'page': page,
bgneal@232:         'page_nav': page_nav,
bgneal@232:         'last_page': last_page,
bgneal@232:         'can_moderate': can_moderate,
bgneal@232:         'can_reply': can_reply,
bgneal@232:         'form': NewPostForm(initial={'topic_id': topic.id}),
bgneal@232:         'is_favorite': is_favorite,
bgneal@232:         'is_subscribed': is_subscribed,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@374: def topic_unread(request, id):
bgneal@374:     """
bgneal@374:     This view redirects to the first post the user hasn't read, if we can
bgneal@374:     figure that out. Otherwise we redirect to the topic.
bgneal@374: 
bgneal@374:     """
bgneal@374:     topic_url = reverse('forums-topic_index', kwargs={'id': id})
bgneal@374: 
bgneal@374:     if request.user.is_authenticated():
bgneal@680:         topic = get_object_or_404(Topic.objects.select_related('forum', 'user'), pk=id)
bgneal@374:         try:
bgneal@376:             tlv = TopicLastVisit.objects.get(user=request.user, topic=topic)
bgneal@374:         except TopicLastVisit.DoesNotExist:
bgneal@376:             try:
bgneal@376:                 flv = ForumLastVisit.objects.get(user=request.user,
bgneal@376:                         forum=topic.forum)
bgneal@376:             except ForumLastVisit.DoesNotExist:
bgneal@376:                 return HttpResponseRedirect(topic_url)
bgneal@376:             else:
bgneal@376:                 last_visit = flv.begin_date
bgneal@376:         else:
bgneal@376:             last_visit = tlv.last_visit
bgneal@374: 
bgneal@376:         posts = Post.objects.filter(topic=topic, creation_date__gt=last_visit)
bgneal@374:         if posts:
bgneal@374:             return _goto_post(posts[0])
bgneal@374:         else:
bgneal@374:             # just go to the last post in the topic
bgneal@374:             return _goto_post(topic.last_post)
bgneal@374: 
bgneal@374:     # user isn't authenticated, just go to the topic
bgneal@374:     return HttpResponseRedirect(topic_url)
bgneal@374: 
bgneal@374: 
bgneal@529: def topic_latest(request, id):
bgneal@529:     """
bgneal@529:     This view shows the latest (last) post in a given topic.
bgneal@529: 
bgneal@529:     """
bgneal@680:     topic = get_object_or_404(Topic.objects.select_related('forum', 'user'), pk=id)
bgneal@529: 
bgneal@529:     if topic.last_post:
bgneal@529:         return _goto_post(topic.last_post)
bgneal@529: 
bgneal@529:     raise Http404
bgneal@529: 
bgneal@529: 
bgneal@232: @login_required
bgneal@232: def new_topic(request, slug):
bgneal@232:     """
bgneal@232:     This view handles the creation of new topics.
bgneal@232:     """
bgneal@232:     forum = get_object_or_404(Forum.objects.select_related(), slug=slug)
bgneal@232: 
bgneal@459:     if not perms.can_access(forum.category, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@232:     if request.method == 'POST':
bgneal@232:         form = NewTopicForm(request.user, forum, request.POST)
bgneal@232:         if form.is_valid():
bgneal@232:             if antispam.utils.spam_check(request, form.cleaned_data['body']):
bgneal@232:                 return HttpResponseRedirect(reverse('antispam-suspended'))
bgneal@232: 
bgneal@232:             topic = form.save(request.META.get("REMOTE_ADDR"))
bgneal@232:             _bump_post_count(request.user)
bgneal@232:             return HttpResponseRedirect(reverse('forums-new_topic_thanks',
bgneal@232:                                             kwargs={'tid': topic.pk}))
bgneal@232:     else:
bgneal@232:         form = NewTopicForm(request.user, forum)
bgneal@286: 
bgneal@1031:     return render(request, 'forums/new_topic.html', {
bgneal@232:         'forum': forum,
bgneal@232:         'form': form,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def new_topic_thanks(request, tid):
bgneal@232:     """
bgneal@232:     This view displays the success page for a newly created topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=tid)
bgneal@1031:     return render(request, 'forums/new_topic_thanks.html', {
bgneal@232:         'forum': topic.forum,
bgneal@232:         'topic': topic,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @require_POST
bgneal@232: def quick_reply_ajax(request):
bgneal@232:     """
bgneal@232:     This function handles the quick reply to a thread function. This
bgneal@232:     function is meant to be the target of an AJAX post, and returns
bgneal@232:     the HTML for the new post, which the client-side script appends
bgneal@232:     to the document.
bgneal@232:     """
bgneal@232:     if not request.user.is_authenticated():
bgneal@232:         return HttpResponseForbidden('Please login or register to post.')
bgneal@232: 
bgneal@232:     form = NewPostForm(request.POST)
bgneal@232:     if form.is_valid():
bgneal@459:         if not perms.can_post(form.topic, request.user):
bgneal@232:             return HttpResponseForbidden("You don't have permission to post in this topic.")
bgneal@232:         if antispam.utils.spam_check(request, form.cleaned_data['body']):
bgneal@232:             return HttpResponseForbidden(antispam.BUSTED_MESSAGE)
bgneal@232: 
bgneal@232:         post = form.save(request.user, request.META.get("REMOTE_ADDR", ""))
bgneal@232:         post.unread = True
bgneal@285:         post.attach_list = post.attachments.all()
bgneal@232:         _bump_post_count(request.user)
bgneal@446:         _update_last_visit(request.user, form.topic, datetime.datetime.now())
bgneal@285: 
bgneal@1031:         return render(request, 'forums/display_post.html', {
bgneal@232:             'post': post,
bgneal@459:             'can_moderate': perms.can_moderate(form.topic.forum, request.user),
bgneal@232:             'can_reply': True,
bgneal@1031:             })
bgneal@232: 
bgneal@963:     # The client side javascript is pretty simplistic right now and we don't
bgneal@963:     # want to change it yet. It is expecting a single error string. Just grab
bgneal@963:     # the first error message and use that.
bgneal@963:     errors = form.errors.as_data()
bgneal@963:     msg = errors.values()[0][0].message if errors else 'Unknown error'
bgneal@963:     return HttpResponseBadRequest(msg)
bgneal@232: 
bgneal@232: 
bgneal@374: def _goto_post(post):
bgneal@374:     """
bgneal@374:     Calculate what page the given post is on in its parent topic, then
bgneal@374:     return a redirect to it.
bgneal@374: 
bgneal@374:     """
bgneal@374:     count = post.topic.posts.filter(creation_date__lt=post.creation_date).count()
bgneal@374:     page = count / POSTS_PER_PAGE + 1
bgneal@374:     url = (reverse('forums-topic_index', kwargs={'id': post.topic.id}) +
bgneal@374:         '?page=%s#p%s' % (page, post.id))
bgneal@374:     return HttpResponseRedirect(url)
bgneal@374: 
bgneal@374: 
bgneal@232: def goto_post(request, post_id):
bgneal@232:     """
bgneal@232:     This function calculates what page a given post is on, then redirects
bgneal@232:     to that URL. This function is the target of get_absolute_url() for
bgneal@232:     Post objects.
bgneal@232:     """
bgneal@232:     post = get_object_or_404(Post.objects.select_related(), pk=post_id)
bgneal@374:     return _goto_post(post)
bgneal@232: 
bgneal@232: 
bgneal@232: @require_POST
bgneal@232: def flag_post(request):
bgneal@232:     """
bgneal@232:     This function handles the flagging of posts by users. This function should
bgneal@232:     be the target of an AJAX post.
bgneal@232:     """
bgneal@232:     if not request.user.is_authenticated():
bgneal@232:         return HttpResponseForbidden('Please login or register to flag a post.')
bgneal@232: 
bgneal@232:     id = request.POST.get('id')
bgneal@232:     if id is None:
bgneal@232:         return HttpResponseBadRequest('No post id')
bgneal@232: 
bgneal@232:     try:
bgneal@232:         post = Post.objects.get(pk=id)
bgneal@232:     except Post.DoesNotExist:
bgneal@232:         return HttpResponseBadRequest('No post with id %s' % id)
bgneal@232: 
bgneal@232:     flag = FlaggedPost(user=request.user, post=post)
bgneal@232:     flag.save()
bgneal@232:     email_admins('A Post Has Been Flagged', """Hello,
bgneal@232: 
bgneal@232: A user has flagged a forum post for review.
bgneal@232: """)
bgneal@232:     return HttpResponse('The post was flagged. A moderator will review the post shortly. ' \
bgneal@232:             'Thanks for helping to improve the discussions on this site.')
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def edit_post(request, id):
bgneal@232:     """
bgneal@232:     This view function allows authorized users to edit posts.
bgneal@232:     The superuser, forum moderators, and original author can edit posts.
bgneal@232:     """
bgneal@232:     post = get_object_or_404(Post.objects.select_related(), pk=id)
bgneal@232: 
bgneal@459:     can_moderate = perms.can_moderate(post.topic.forum, request.user)
bgneal@232:     can_edit = can_moderate or request.user == post.user
bgneal@232: 
bgneal@232:     if not can_edit:
bgneal@232:         return HttpResponseForbidden("You don't have permission to edit that post.")
bgneal@232: 
bgneal@295:     topic_name = None
bgneal@295:     first_post = Post.objects.filter(topic=post.topic).order_by('creation_date')[0]
bgneal@295:     if first_post.id == post.id:
bgneal@295:         topic_name = post.topic.name
bgneal@295: 
bgneal@232:     if request.method == "POST":
bgneal@295:         form = PostForm(request.POST, instance=post, topic_name=topic_name)
bgneal@232:         if form.is_valid():
bgneal@232:             if antispam.utils.spam_check(request, form.cleaned_data['body']):
bgneal@232:                 return HttpResponseRedirect(reverse('antispam-suspended'))
bgneal@232:             post = form.save(commit=False)
bgneal@232:             post.touch()
bgneal@963:             post.save(html=form.body_html)
bgneal@469:             notify_updated_post(post)
bgneal@285: 
bgneal@295:             # if we are editing a first post, save the parent topic as well
bgneal@295:             if topic_name:
bgneal@295:                 post.topic.save()
bgneal@469:                 notify_updated_topic(post.topic)
bgneal@295: 
bgneal@285:             # Save any attachments
bgneal@286:             form.attach_proc.save_attachments(post)
bgneal@285: 
bgneal@232:             return HttpResponseRedirect(post.get_absolute_url())
bgneal@232:     else:
bgneal@295:         form = PostForm(instance=post, topic_name=topic_name)
bgneal@232: 
bgneal@1031:     return render(request, 'forums/edit_post.html', {
bgneal@232:         'forum': post.topic.forum,
bgneal@232:         'topic': post.topic,
bgneal@232:         'post': post,
bgneal@232:         'form': form,
bgneal@232:         'can_moderate': can_moderate,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @require_POST
bgneal@232: def delete_post(request):
bgneal@232:     """
bgneal@232:     This view function allows superusers and forum moderators to delete posts.
bgneal@232:     This function is the target of AJAX calls from the client.
bgneal@232:     """
bgneal@232:     if not request.user.is_authenticated():
bgneal@232:         return HttpResponseForbidden('Please login to delete a post.')
bgneal@232: 
bgneal@232:     id = request.POST.get('id')
bgneal@232:     if id is None:
bgneal@232:         return HttpResponseBadRequest('No post id')
bgneal@232: 
bgneal@232:     post = get_object_or_404(Post.objects.select_related(), pk=id)
bgneal@232: 
bgneal@460:     if not perms.can_moderate(post.topic.forum, request.user):
bgneal@232:         return HttpResponseForbidden("You don't have permission to delete that post.")
bgneal@232: 
bgneal@232:     delete_single_post(post)
bgneal@232:     return HttpResponse("The post has been deleted.")
bgneal@232: 
bgneal@232: 
bgneal@232: def delete_single_post(post):
bgneal@232:     """
bgneal@232:     This function deletes a single post. It handles the case of where
bgneal@232:     a post is the sole post in a topic by deleting the topic also. It
bgneal@232:     adjusts any foreign keys in Topic or Forum objects that might be pointing
bgneal@232:     to this post before deleting the post to avoid a cascading delete.
bgneal@232:     """
bgneal@232:     if post.topic.post_count == 1 and post == post.topic.last_post:
bgneal@232:         _delete_topic(post.topic)
bgneal@232:     else:
bgneal@232:         _delete_post(post)
bgneal@232: 
bgneal@232: 
bgneal@232: def _delete_post(post):
bgneal@232:     """
bgneal@232:     Internal function to delete a single post object.
bgneal@232:     Decrements the post author's post count.
bgneal@232:     Adjusts the parent topic and forum's last_post as needed.
bgneal@232:     """
bgneal@232:     # Adjust post creator's post count
bgneal@789:     profile = post.user.profile
bgneal@232:     if profile.forum_post_count > 0:
bgneal@232:         profile.forum_post_count -= 1
bgneal@562:         profile.save(content_update=False)
bgneal@232: 
bgneal@232:     # If this post is the last_post in a topic, we need to update
bgneal@232:     # both the topic and parent forum's last post fields. If we don't
bgneal@232:     # the cascading delete will delete them also!
bgneal@232: 
bgneal@232:     topic = post.topic
bgneal@232:     if topic.last_post == post:
bgneal@232:         topic.last_post_pre_delete()
bgneal@232:         topic.save()
bgneal@232: 
bgneal@232:     forum = topic.forum
bgneal@232:     if forum.last_post == post:
bgneal@232:         forum.last_post_pre_delete()
bgneal@232:         forum.save()
bgneal@232: 
bgneal@285:     # delete any attachments
bgneal@285:     post.attachments.clear()
bgneal@285: 
bgneal@232:     # Should be safe to delete the post now:
bgneal@232:     post.delete()
bgneal@232: 
bgneal@232: 
bgneal@232: def _delete_topic(topic):
bgneal@232:     """
bgneal@232:     Internal function to delete an entire topic.
bgneal@232:     Deletes the topic and all posts contained within.
bgneal@232:     Adjusts the parent forum's last_post as needed.
bgneal@232:     Note that we don't bother adjusting all the users'
bgneal@232:     post counts as that doesn't seem to be worth the effort.
bgneal@232:     """
bgneal@318:     parent_forum = topic.forum
bgneal@318:     if parent_forum.last_post and parent_forum.last_post.topic == topic:
bgneal@318:         parent_forum.last_post_pre_delete(deleting_topic=True)
bgneal@318:         parent_forum.save()
bgneal@232: 
bgneal@232:     # delete subscriptions to this topic
bgneal@232:     topic.subscribers.clear()
bgneal@232:     topic.bookmarkers.clear()
bgneal@232: 
bgneal@285:     # delete all attachments
bgneal@285:     posts = Post.objects.filter(topic=topic)
bgneal@285:     for post in posts:
bgneal@285:         post.attachments.clear()
bgneal@285: 
bgneal@318:     # Null out the topic's last post so we don't have a foreign key pointing
bgneal@318:     # to a post when we delete posts.
bgneal@318:     topic.last_post = None
bgneal@318:     topic.save()
bgneal@318: 
bgneal@318:     # delete all posts in bulk
bgneal@318:     posts.delete()
bgneal@318: 
bgneal@318:     # It should be safe to just delete the topic now.
bgneal@232:     topic.delete()
bgneal@232: 
bgneal@318:     # Resync parent forum's post and topic counts
bgneal@318:     parent_forum.sync()
bgneal@318:     parent_forum.save()
bgneal@318: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def new_post(request, topic_id):
bgneal@232:     """
bgneal@232:     This function is the view for creating a normal, non-quick reply
bgneal@232:     to a topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=topic_id)
bgneal@459:     can_post = perms.can_post(topic, request.user)
bgneal@232: 
bgneal@232:     if can_post:
bgneal@232:         if request.method == 'POST':
bgneal@232:             form = PostForm(request.POST)
bgneal@232:             if form.is_valid():
bgneal@232:                 if antispam.utils.spam_check(request, form.cleaned_data['body']):
bgneal@232:                     return HttpResponseRedirect(reverse('antispam-suspended'))
bgneal@232:                 post = form.save(commit=False)
bgneal@232:                 post.topic = topic
bgneal@232:                 post.user = request.user
bgneal@232:                 post.user_ip = request.META.get("REMOTE_ADDR", "")
bgneal@963:                 post.save(html=form.body_html)
bgneal@469:                 notify_new_post(post)
bgneal@285: 
bgneal@285:                 # Save any attachments
bgneal@286:                 form.attach_proc.save_attachments(post)
bgneal@285: 
bgneal@232:                 _bump_post_count(request.user)
bgneal@446:                 _update_last_visit(request.user, topic, datetime.datetime.now())
bgneal@232:                 return HttpResponseRedirect(post.get_absolute_url())
bgneal@232:         else:
bgneal@232:             quote_id = request.GET.get('quote')
bgneal@232:             if quote_id:
bgneal@232:                 quote_post = get_object_or_404(Post.objects.select_related(),
bgneal@232:                         pk=quote_id)
bgneal@566:                 form = PostForm(initial={'body': quote_message(quote_post.user.username,
bgneal@232:                     quote_post.body)})
bgneal@232:             else:
bgneal@232:                 form = PostForm()
bgneal@232:     else:
bgneal@232:         form = None
bgneal@232: 
bgneal@1031:     return render(request, 'forums/new_post.html', {
bgneal@232:         'forum': topic.forum,
bgneal@232:         'topic': topic,
bgneal@232:         'form': form,
bgneal@232:         'can_post': can_post,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_topic_stick(request, id):
bgneal@232:     """
bgneal@232:     This view function is for moderators to toggle the sticky status of a topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=id)
bgneal@459:     if perms.can_moderate(topic.forum, request.user):
bgneal@232:         topic.sticky = not topic.sticky
bgneal@232:         topic.save()
bgneal@232:         return HttpResponseRedirect(topic.get_absolute_url())
bgneal@232: 
bgneal@232:     return HttpResponseForbidden()
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_topic_lock(request, id):
bgneal@232:     """
bgneal@232:     This view function is for moderators to toggle the locked status of a topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=id)
bgneal@459:     if perms.can_moderate(topic.forum, request.user):
bgneal@232:         topic.locked = not topic.locked
bgneal@232:         topic.save()
bgneal@232:         return HttpResponseRedirect(topic.get_absolute_url())
bgneal@232: 
bgneal@232:     return HttpResponseForbidden()
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_topic_delete(request, id):
bgneal@232:     """
bgneal@232:     This view function is for moderators to delete an entire topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=id)
bgneal@459:     if perms.can_moderate(topic.forum, request.user):
bgneal@232:         forum_url = topic.forum.get_absolute_url()
bgneal@232:         _delete_topic(topic)
bgneal@232:         return HttpResponseRedirect(forum_url)
bgneal@232: 
bgneal@232:     return HttpResponseForbidden()
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_topic_move(request, id):
bgneal@232:     """
bgneal@232:     This view function is for moderators to move a topic to a different forum.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=id)
bgneal@459:     if not perms.can_moderate(topic.forum, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@232:     if request.method == 'POST':
bgneal@232:         form = MoveTopicForm(request.user, request.POST)
bgneal@232:         if form.is_valid():
bgneal@232:             new_forum = form.cleaned_data['forums']
bgneal@232:             old_forum = topic.forum
bgneal@232:             _move_topic(topic, old_forum, new_forum)
bgneal@232:             return HttpResponseRedirect(topic.get_absolute_url())
bgneal@232:     else:
bgneal@232:         form = MoveTopicForm(request.user)
bgneal@232: 
bgneal@1031:     return render(request, 'forums/move_topic.html', {
bgneal@232:         'forum': topic.forum,
bgneal@232:         'topic': topic,
bgneal@232:         'form': form,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_forum(request, slug):
bgneal@232:     """
bgneal@232:     Displays a view to allow moderators to perform various operations
bgneal@232:     on topics in a forum in bulk. We currently support mass locking/unlocking,
bgneal@232:     stickying and unstickying, moving, and deleting topics.
bgneal@232:     """
bgneal@232:     forum = get_object_or_404(Forum.objects.select_related(), slug=slug)
bgneal@459:     if not perms.can_moderate(forum, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@232:     topics = forum.topics.select_related('user', 'last_post', 'last_post__user')
bgneal@232:     paginator = create_topic_paginator(topics)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232: 
bgneal@232:     # we do this for the template since it is rendered twice
bgneal@232:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@232:     form = None
bgneal@232: 
bgneal@232:     if request.method == 'POST':
bgneal@232:         topic_ids = request.POST.getlist('topic_ids')
bgneal@232:         url = reverse('forums-mod_forum', kwargs={'slug':forum.slug})
bgneal@232:         url += '?page=%s' % page_num
bgneal@232: 
bgneal@232:         if len(topic_ids):
bgneal@232:             if request.POST.get('sticky'):
bgneal@232:                 _bulk_sticky(forum, topic_ids)
bgneal@232:                 return HttpResponseRedirect(url)
bgneal@232:             elif request.POST.get('lock'):
bgneal@232:                 _bulk_lock(forum, topic_ids)
bgneal@232:                 return HttpResponseRedirect(url)
bgneal@232:             elif request.POST.get('delete'):
bgneal@232:                 _bulk_delete(forum, topic_ids)
bgneal@232:                 return HttpResponseRedirect(url)
bgneal@232:             elif request.POST.get('move'):
bgneal@232:                 form = MoveTopicForm(request.user, request.POST, hide_label=True)
bgneal@232:                 if form.is_valid():
bgneal@232:                     _bulk_move(topic_ids, forum, form.cleaned_data['forums'])
bgneal@232:                     return HttpResponseRedirect(url)
bgneal@286: 
bgneal@232:     if form is None:
bgneal@232:         form = MoveTopicForm(request.user, hide_label=True)
bgneal@232: 
bgneal@1031:     return render(request, 'forums/mod_forum.html', {
bgneal@232:         'forum': forum,
bgneal@232:         'page': page,
bgneal@232:         'page_nav': page_nav,
bgneal@232:         'form': form,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: @require_POST
bgneal@382: def catchup_all(request):
bgneal@382:     """
bgneal@382:     This view marks all forums as being read.
bgneal@382:     """
bgneal@384:     forum_ids = Forum.objects.forum_ids_for_user(request.user)
bgneal@382: 
bgneal@1031:     TopicLastVisit.objects.filter(
bgneal@1031:             user=request.user,
bgneal@382:             topic__forum__id__in=forum_ids).delete()
bgneal@382: 
bgneal@382:     now = datetime.datetime.now()
bgneal@384:     ForumLastVisit.objects.filter(user=request.user,
bgneal@384:             forum__in=forum_ids).update(begin_date=now, end_date=now)
bgneal@382: 
bgneal@382:     return HttpResponseRedirect(reverse('forums-index'))
bgneal@382: 
bgneal@382: 
bgneal@382: @login_required
bgneal@382: @require_POST
bgneal@232: def forum_catchup(request, slug):
bgneal@232:     """
bgneal@232:     This view marks all the topics in the forum as being read.
bgneal@232:     """
bgneal@232:     forum = get_object_or_404(Forum.objects.select_related(), slug=slug)
bgneal@232: 
bgneal@459:     if not perms.can_access(forum.category, request.user):
bgneal@232:         return HttpResponseForbidden()
bgneal@232: 
bgneal@232:     forum.catchup(request.user)
bgneal@232:     return HttpResponseRedirect(forum.get_absolute_url())
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def mod_topic_split(request, id):
bgneal@232:     """
bgneal@232:     This view function allows moderators to split posts off to a new topic.
bgneal@232:     """
bgneal@232:     topic = get_object_or_404(Topic.objects.select_related(), pk=id)
bgneal@459:     if not perms.can_moderate(topic.forum, request.user):
bgneal@232:         return HttpResponseRedirect(topic.get_absolute_url())
bgneal@232: 
bgneal@232:     if request.method == "POST":
bgneal@232:         form = SplitTopicForm(request.user, request.POST)
bgneal@232:         if form.is_valid():
bgneal@232:             if form.split_at:
bgneal@232:                 _split_topic_at(topic, form.post_ids[0],
bgneal@232:                         form.cleaned_data['forums'],
bgneal@232:                         form.cleaned_data['name'])
bgneal@232:             else:
bgneal@232:                 _split_topic(topic, form.post_ids,
bgneal@232:                         form.cleaned_data['forums'],
bgneal@232:                         form.cleaned_data['name'])
bgneal@232: 
bgneal@232:             return HttpResponseRedirect(topic.get_absolute_url())
bgneal@232:     else:
bgneal@232:         form = SplitTopicForm(request.user)
bgneal@232: 
bgneal@232:     posts = topic.posts.select_related()
bgneal@232: 
bgneal@1031:     return render(request, 'forums/mod_split_topic.html', {
bgneal@232:         'forum': topic.forum,
bgneal@232:         'topic': topic,
bgneal@232:         'posts': posts,
bgneal@232:         'form': form,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def unread_topics(request):
bgneal@232:     """Displays the topics with unread posts for a given user."""
bgneal@232: 
bgneal@232:     topics = get_unread_topics(request.user)
bgneal@232: 
bgneal@232:     paginator = create_topic_paginator(topics)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232: 
bgneal@232:     attach_topic_page_ranges(page.object_list)
bgneal@232: 
bgneal@232:     # we do this for the template since it is rendered twice
bgneal@232:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@232: 
bgneal@1031:     return render(request, 'forums/topic_list.html', {
bgneal@232:         'title': 'Topics With Unread Posts',
bgneal@232:         'page': page,
bgneal@232:         'page_nav': page_nav,
bgneal@374:         'unread': True,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: def unanswered_topics(request):
bgneal@232:     """Displays the topics with no replies."""
bgneal@232: 
bgneal@232:     forum_ids = Forum.objects.forum_ids_for_user(request.user)
bgneal@232:     topics = Topic.objects.filter(forum__id__in=forum_ids,
bgneal@232:             post_count=1).select_related(
bgneal@232:                     'forum', 'user', 'last_post', 'last_post__user')
bgneal@232: 
bgneal@232:     paginator = create_topic_paginator(topics)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232: 
bgneal@232:     attach_topic_page_ranges(page.object_list)
bgneal@232: 
bgneal@232:     # we do this for the template since it is rendered twice
bgneal@232:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@232: 
bgneal@1031:     return render(request, 'forums/topic_list.html', {
bgneal@232:         'title': 'Unanswered Topics',
bgneal@232:         'page': page,
bgneal@232:         'page_nav': page_nav,
bgneal@374:         'unread': False,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@409: def active_topics(request, num):
bgneal@409:     """Displays the last num topics that have been posted to."""
bgneal@409: 
bgneal@409:     # sanity check num
bgneal@409:     num = min(50, max(10, int(num)))
bgneal@409: 
bgneal@409:     # MySQL didn't do this query very well unfortunately...
bgneal@522:     #
bgneal@522:     #public_forum_ids = Forum.objects.public_forum_ids()
bgneal@409:     #topics = Topic.objects.filter(forum__in=public_forum_ids).select_related(
bgneal@409:     #            'forum', 'user', 'last_post', 'last_post__user').order_by(
bgneal@409:     #            '-update_date')[:num]
bgneal@522: 
bgneal@522:     # Save 1 query by using forums.latest to give us a list of the most recent
bgneal@522:     # topics; forums.latest doesn't save enough info to give us everything we
bgneal@522:     # need so we hit the database for the rest.
bgneal@522: 
bgneal@522:     topic_ids = get_latest_topic_ids(num)
bgneal@409:     topics = Topic.objects.filter(id__in=topic_ids).select_related(
bgneal@409:                 'forum', 'user', 'last_post', 'last_post__user').order_by(
bgneal@522:                 '-update_date')
bgneal@409: 
bgneal@409:     paginator = create_topic_paginator(topics)
bgneal@409:     page_num = get_page_num(request)
bgneal@409:     try:
bgneal@409:         page = paginator.page(page_num)
bgneal@409:     except InvalidPage:
bgneal@409:         raise Http404
bgneal@409: 
bgneal@409:     attach_topic_page_ranges(page.object_list)
bgneal@409: 
bgneal@409:     # we do this for the template since it is rendered twice
bgneal@409:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@409: 
bgneal@409:     title = 'Last %d Active Topics' % num
bgneal@409: 
bgneal@1031:     return render(request, 'forums/topic_list.html', {
bgneal@409:         'title': title,
bgneal@409:         'page': page,
bgneal@409:         'page_nav': page_nav,
bgneal@409:         'unread': False,
bgneal@1031:         })
bgneal@409: 
bgneal@409: 
bgneal@232: @login_required
bgneal@232: def my_posts(request):
bgneal@232:     """Displays a list of posts the requesting user made."""
bgneal@232:     return _user_posts(request, request.user, request.user, 'My Posts')
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def posts_for_user(request, username):
bgneal@232:     """Displays a list of posts by the given user.
bgneal@232:     Only the forums that the requesting user can see are examined.
bgneal@232:     """
bgneal@232:     target_user = get_object_or_404(User, username=username)
bgneal@232:     return _user_posts(request, target_user, request.user, 'Posts by %s' % username)
bgneal@232: 
bgneal@232: 
bgneal@232: @login_required
bgneal@232: def post_ip_info(request, post_id):
bgneal@232:     """Displays information about the IP address the post was made from."""
bgneal@232:     post = get_object_or_404(Post.objects.select_related(), pk=post_id)
bgneal@232: 
bgneal@459:     if not perms.can_moderate(post.topic.forum, request.user):
bgneal@232:         return HttpResponseForbidden("You don't have permission for this post.")
bgneal@232: 
bgneal@232:     ip_users = sorted(set(Post.objects.filter(
bgneal@232:         user_ip=post.user_ip).values_list('user__username', flat=True)))
bgneal@232: 
bgneal@1031:     return render(request, 'forums/post_ip.html', {
bgneal@232:         'post': post,
bgneal@232:         'ip_users': ip_users,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: def _user_posts(request, target_user, req_user, page_title):
bgneal@286:     """Displays a list of posts made by the target user.
bgneal@232:     req_user is the user trying to view the posts. Only the forums
bgneal@232:     req_user can see are searched.
bgneal@232:     """
bgneal@232:     forum_ids = Forum.objects.forum_ids_for_user(req_user)
bgneal@232:     posts = Post.objects.filter(user=target_user,
bgneal@232:             topic__forum__id__in=forum_ids).order_by(
bgneal@232:                     '-creation_date').select_related()
bgneal@232: 
bgneal@232:     paginator = create_post_paginator(posts)
bgneal@232:     page_num = get_page_num(request)
bgneal@232:     try:
bgneal@232:         page = paginator.page(page_num)
bgneal@232:     except InvalidPage:
bgneal@232:         raise Http404
bgneal@232: 
bgneal@232:     # we do this for the template since it is rendered twice
bgneal@232:     page_nav = render_to_string('forums/pagination.html', {'page': page})
bgneal@232: 
bgneal@1031:     return render(request, 'forums/post_list.html', {
bgneal@232:         'title': page_title,
bgneal@232:         'page': page,
bgneal@232:         'page_nav': page_nav,
bgneal@1031:         })
bgneal@232: 
bgneal@232: 
bgneal@232: def _bump_post_count(user):
bgneal@232:     """
bgneal@232:     Increments the forum_post_count for the given user.
bgneal@232:     """
bgneal@789:     profile = user.profile
bgneal@232:     profile.forum_post_count += 1
bgneal@562:     profile.save(content_update=False)
bgneal@232: 
bgneal@232: 
bgneal@232: def _move_topic(topic, old_forum, new_forum):
bgneal@232:     if new_forum != old_forum:
bgneal@232:         topic.forum = new_forum
bgneal@232:         topic.save()
bgneal@232:         # Have to adjust foreign keys to last_post, denormalized counts, etc.:
bgneal@232:         old_forum.sync()
bgneal@232:         old_forum.save()
bgneal@232:         new_forum.sync()
bgneal@232:         new_forum.save()
bgneal@232: 
bgneal@232: 
bgneal@232: def _bulk_sticky(forum, topic_ids):
bgneal@232:     """
bgneal@232:     Performs a toggle on the sticky status for a given list of topic ids.
bgneal@232:     """
bgneal@232:     topics = Topic.objects.filter(pk__in=topic_ids)
bgneal@232:     for topic in topics:
bgneal@232:         if topic.forum == forum:
bgneal@232:             topic.sticky = not topic.sticky
bgneal@232:             topic.save()
bgneal@232: 
bgneal@232: 
bgneal@232: def _bulk_lock(forum, topic_ids):
bgneal@232:     """
bgneal@232:     Performs a toggle on the locked status for a given list of topic ids.
bgneal@232:     """
bgneal@232:     topics = Topic.objects.filter(pk__in=topic_ids)
bgneal@232:     for topic in topics:
bgneal@232:         if topic.forum == forum:
bgneal@232:             topic.locked = not topic.locked
bgneal@232:             topic.save()
bgneal@232: 
bgneal@232: 
bgneal@232: def _bulk_delete(forum, topic_ids):
bgneal@232:     """
bgneal@232:     Deletes the list of topics.
bgneal@232:     """
bgneal@235:     # Because we are deleting stuff, retrieve each topic one at a
bgneal@235:     # time since we are going to be adjusting de-normalized fields
bgneal@235:     # during deletes. In particular, we can't do this:
bgneal@235:     #   topics = Topic.objects.filter(pk__in=topic_ids).select_related()
bgneal@235:     #   for topic in topics:
bgneal@235:     # since topic.forum.last_post can go stale after a delete.
bgneal@235: 
bgneal@235:     for id in topic_ids:
bgneal@235:         try:
bgneal@235:             topic = Topic.objects.select_related().get(pk=id)
bgneal@235:         except Topic.DoesNotExist:
bgneal@235:             continue
bgneal@235:         _delete_topic(topic)
bgneal@232: 
bgneal@232: 
bgneal@232: def _bulk_move(topic_ids, old_forum, new_forum):
bgneal@232:     """
bgneal@232:     Moves the list of topics to a new forum.
bgneal@232:     """
bgneal@232:     topics = Topic.objects.filter(pk__in=topic_ids).select_related()
bgneal@232:     for topic in topics:
bgneal@232:         if topic.forum == old_forum:
bgneal@232:             _move_topic(topic, old_forum, new_forum)
bgneal@232: 
bgneal@232: 
bgneal@445: def _update_last_visit(user, topic, visit_time):
bgneal@232:     """
bgneal@232:     Does the bookkeeping for the last visit status for the user to the
bgneal@232:     topic/forum.
bgneal@232:     """
bgneal@232:     now = datetime.datetime.now()
bgneal@232:     try:
bgneal@232:         flv = ForumLastVisit.objects.get(user=user, forum=topic.forum)
bgneal@232:     except ForumLastVisit.DoesNotExist:
bgneal@232:         flv = ForumLastVisit(user=user, forum=topic.forum)
bgneal@232:         flv.begin_date = now
bgneal@232: 
bgneal@232:     flv.end_date = now
bgneal@232:     flv.save()
bgneal@232: 
bgneal@232:     if topic.update_date > flv.begin_date:
bgneal@232:         try:
bgneal@232:             tlv = TopicLastVisit.objects.get(user=user, topic=topic)
bgneal@232:         except TopicLastVisit.DoesNotExist:
bgneal@445:             tlv = TopicLastVisit(user=user, topic=topic, last_visit=datetime.datetime.min)
bgneal@232: 
bgneal@445:         if visit_time > tlv.last_visit:
bgneal@445:             tlv.last_visit = visit_time
bgneal@445:             tlv.save()
bgneal@232: 
bgneal@232: 
bgneal@232: def _split_topic_at(topic, post_id, new_forum, new_name):
bgneal@232:     """
bgneal@232:     This function splits the post given by post_id and all posts that come
bgneal@232:     after it in the given topic to a new topic in a new forum.
bgneal@232:     It is assumed the caller has been checked for moderator rights.
bgneal@232:     """
bgneal@232:     post = get_object_or_404(Post, id=post_id)
bgneal@232:     if post.topic == topic:
bgneal@232:         post_ids = Post.objects.filter(topic=topic,
bgneal@232:                 creation_date__gte=post.creation_date).values_list('id', flat=True)
bgneal@232:         _split_topic(topic, post_ids, new_forum, new_name)
bgneal@232: 
bgneal@232: 
bgneal@232: def _split_topic(topic, post_ids, new_forum, new_name):
bgneal@232:     """
bgneal@232:     This function splits the posts given by the post_ids list in the
bgneal@232:     given topic to a new topic in a new forum.
bgneal@232:     It is assumed the caller has been checked for moderator rights.
bgneal@232:     """
bgneal@232:     posts = Post.objects.filter(topic=topic, id__in=post_ids)
bgneal@232:     if len(posts) > 0:
bgneal@232:         new_topic = Topic(forum=new_forum, name=new_name, user=posts[0].user)
bgneal@232:         new_topic.save()
bgneal@469:         notify_new_topic(new_topic)
bgneal@232:         for post in posts:
bgneal@232:             post.topic = new_topic
bgneal@232:             post.save()
bgneal@286: 
bgneal@232:         topic.post_count_update()
bgneal@232:         topic.save()
bgneal@232:         new_topic.post_count_update()
bgneal@232:         new_topic.save()
bgneal@232:         topic.forum.sync()
bgneal@232:         topic.forum.save()
bgneal@232:         new_forum.sync()
bgneal@232:         new_forum.save()