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1 """
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2 Signal handlers for the forums application.
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3 """
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4 from django.db.models.signals import post_save
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5 from django.db.models.signals import post_delete
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6
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7 from forums.models import Topic, Post
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8 from forums.views.subscriptions import notify_topic_subscribers
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9
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10
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11 def on_topic_save(sender, **kwargs):
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12 if kwargs['created']:
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13 topic = kwargs['instance']
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14 topic.forum.topic_count_update()
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15 topic.forum.save()
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16
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17
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18 def on_topic_delete(sender, **kwargs):
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19 topic = kwargs['instance']
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20 topic.forum.topic_count_update()
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21 topic.forum.save()
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22
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23
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24 def on_post_save(sender, **kwargs):
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25 if kwargs['created']:
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26 post = kwargs['instance']
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27
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28 # update the topic
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29 post.topic.post_count_update()
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30 post.topic.save()
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31
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32 # update the forum
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33 post.topic.forum.post_count_update()
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34 post.topic.forum.save()
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35
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36 # send out any email notifications
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37 notify_topic_subscribers(post)
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38
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39
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40 def on_post_delete(sender, **kwargs):
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41 post = kwargs['instance']
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42
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43 # update the topic
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44 post.topic.post_count_update()
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45 post.topic.save()
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46
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47 # update the forum
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48 post.topic.forum.post_count_update()
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49 post.topic.forum.save()
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50
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51
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52 post_save.connect(on_topic_save, sender=Topic, dispatch_uid='forums.signals')
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53 post_delete.connect(on_topic_delete, sender=Topic, dispatch_uid='forums.signals')
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54
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55 post_save.connect(on_post_save, sender=Post, dispatch_uid='forums.signals')
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56 post_delete.connect(on_post_delete, sender=Post, dispatch_uid='forums.signals')
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