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1 """This file contains the feed class for the forums application."""
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2
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3 from django.contrib.syndication.views import Feed
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4 from django.core.exceptions import ObjectDoesNotExist
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5 from django.shortcuts import get_object_or_404
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6
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7 from forums.models import Forum
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8 from forums.models import Post
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9 from core.functions import copyright_str
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10
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11
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12 class ForumsFeed(Feed):
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13 """The Feed class for a specific forum"""
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14
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15 ttl = '60'
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16 author_name = 'Brian Neal'
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17 author_email = 'admin@surfguitar101.com'
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18
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19 def get_object(self, request, forum_slug):
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20 # only return public forums
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21 if forum_slug:
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22 forum = get_object_or_404(Forum, slug=forum_slug)
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23 if forum.id not in Forum.objects.public_forum_ids():
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24 raise ObjectDoesNotExist
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25 return forum
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26
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27 else:
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28 # return None to indicate we want a combined feed
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29 return None
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30
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31 def title(self, obj):
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32 if obj is None:
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33 forum_name = 'Combined'
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34 else:
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35 forum_name = obj.name
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36
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37 return 'SurfGuitar101.com %s Forum Feed' % forum_name
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38
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39 def link(self, obj):
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40 if obj is None:
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41 bits = ''
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42 else:
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43 bits = obj.slug + '/'
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44
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45 return '/feeds/forums/' + bits
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46
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47 def description(self, obj):
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48 if obj is None:
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49 return "User posts to SurfGuitar101.com forums."
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50 return obj.description
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51
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52 def feed_copyright(self):
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53 return copyright_str()
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54
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55 def items(self, obj):
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56 if obj is None:
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57 # return a combined feed of public forum threads
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58 #
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59 # This didn't work real well on InnoDb:
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60 # items = Post.objects.filter(
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61 # topic__forum__in=Forum.objects.public_forums())
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62 #
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63 # For some reason, MySQL wasn't using an index when "in" was used.
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64 # So let's do this the hard way as a work-around:
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65
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66 public_forum_ids = Forum.objects.public_forum_ids()
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67 posts = []
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68 for forum_id in public_forum_ids:
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69 posts.extend(list(Post.objects.filter(
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70 topic__forum=forum_id).order_by('-creation_date').select_related(
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71 'topic', 'user', 'topic__forum')[:30]))
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72
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73 posts.sort(key=lambda x: x.creation_date, reverse=True)
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74 return posts[:30]
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75
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76 else:
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77 return Post.objects.filter(topic__forum__id=obj.id).order_by(
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78 '-creation_date').select_related('topic', 'user', 'topic__forum')[:30]
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79
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80 def item_title(self, item):
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81 return item.topic.name
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82
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83 def item_description(self, item):
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84 return item.html
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85
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86 def item_author_name(self, item):
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87 return item.user.username
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88
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89 def item_pubdate(self, item):
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90 return item.creation_date
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91
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92 def item_categories(self, item):
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93 return (item.topic.forum.name, )
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