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comparison gpp/forums/views.py @ 107:e94398f5e027

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Forums: implemented post delete feature.
author Brian Neal <bgneal@gmail.com>
date Tue, 22 Sep 2009 03:36:39 +0000
parents cb72577785df
children 80ab249d1adc
comparison
equal deleted inserted replaced
106:cb72577785df 107:e94398f5e027
65 forum = get_object_or_404(Forum.objects.select_related(), slug=slug) 65 forum = get_object_or_404(Forum.objects.select_related(), slug=slug)
66 66
67 if not forum.category.can_access(request.user): 67 if not forum.category.can_access(request.user):
68 return HttpResponseForbidden() 68 return HttpResponseForbidden()
69 69
70 topics = forum.topics.select_related('last_post', 'last_post__user') 70 topics = forum.topics.select_related('user', 'last_post', 'last_post__user')
71 paginator = create_topic_paginator(topics) 71 paginator = create_topic_paginator(topics)
72 page_num = int(request.GET.get('page', 1)) 72 page_num = int(request.GET.get('page', 1))
73 try: 73 try:
74 page = paginator.page(page_num) 74 page = paginator.page(page_num)
75 except InvalidPage: 75 except InvalidPage:
265 'post': post, 265 'post': post,
266 'form': form, 266 'form': form,
267 'can_moderate': True, 267 'can_moderate': True,
268 }, 268 },
269 context_instance=RequestContext(request)) 269 context_instance=RequestContext(request))
270
271
272 @require_POST
273 def delete_post(request):
274 """
275 This view function allows superusers and forum moderators to delete posts.
276 This function is the target of AJAX calls from the client.
277 """
278 if not request.user.is_authenticated():
279 return HttpResponseForbidden('Please login to delete a post.')
280
281 id = request.POST.get('id')
282 if id is None:
283 return HttpResponseBadRequest('No post id')
284
285 post = get_object_or_404(Post.objects.select_related(), pk=id)
286
287 can_delete = request.user.is_superuser or \
288 request.user in post.topic.forum.moderators.all()
289
290 if not can_delete:
291 return HttpResponseForbidden("You don't have permission to delete that post.")
292
293 if post.topic.post_count == 1 and post == post.topic.last_post:
294 _delete_topic(post.topic)
295 else:
296 _delete_post(post)
297
298 return HttpResponse("The post has been deleted.")
299
300
301 def _delete_post(post):
302 """
303 Internal function to delete a single post object.
304 Decrements the post author's post count.
305 Adjusts the parent topic and forum's last_post as needed.
306 """
307 # Adjust post creator's post count
308 profile = post.user.get_profile()
309 if profile.forum_post_count > 0:
310 profile.forum_post_count -= 1
311 profile.save()
312
313 # If this post is the last_post in a topic, we need to update
314 # both the topic and parent forum's last post fields. If we don't
315 # the cascading delete will delete them also!
316
317 topic = post.topic
318 if topic.last_post == post:
319 topic.last_post_pre_delete()
320 topic.save()
321
322 forum = topic.forum
323 if forum.last_post == post:
324 forum.last_post_pre_delete()
325 forum.save()
326
327 # Should be safe to delete the post now:
328 post.delete()
329
330
331 def _delete_topic(topic):
332 """
333 Internal function to delete an entire topic.
334 Deletes the topic and all posts contained within.
335 Adjusts the parent forum's last_post as needed.
336 Note that we don't bother adjusting all the users'
337 post counts as that doesn't seem to be worth the effort.
338 """
339 if topic.forum.last_post.topic == topic:
340 topic.forum.last_post_pre_delete()
341 topic.forum.save()
342
343 # It should be safe to just delete the topic now. This will
344 # automatically delete all posts in the topic.
345 topic.delete()