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annotate forums/signals.py @ 582:392fd36360c6

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Added a requirements_dev.txt file since with Python 2.7 we no longer need the importlib.
author Brian Neal <bgneal@gmail.com>
date Sat, 05 May 2012 17:28:29 -0500
parents ee87ea74d46b
children 5902dc5e58a3
rev   line source
bgneal@75 1 """
bgneal@469 2 Signal handlers & signals for the forums application.
bgneal@469 3
bgneal@75 4 """
bgneal@75 5 from django.db.models.signals import post_save
bgneal@75 6 from django.db.models.signals import post_delete
bgneal@469 7 import django.dispatch
bgneal@181 8
bgneal@348 9 from forums.models import Forum, Topic, Post
bgneal@75 10
bgneal@75 11
bgneal@75 12 def on_topic_save(sender, **kwargs):
bgneal@75 13 if kwargs['created']:
bgneal@75 14 topic = kwargs['instance']
bgneal@75 15 topic.forum.topic_count_update()
bgneal@75 16 topic.forum.save()
bgneal@75 17
bgneal@75 18
bgneal@75 19 def on_topic_delete(sender, **kwargs):
bgneal@75 20 topic = kwargs['instance']
bgneal@75 21 topic.forum.topic_count_update()
bgneal@75 22 topic.forum.save()
bgneal@522 23 forums.latest.notify_topic_delete(topic)
bgneal@75 24
bgneal@75 25
bgneal@75 26 def on_post_save(sender, **kwargs):
bgneal@75 27 if kwargs['created']:
bgneal@75 28 post = kwargs['instance']
bgneal@75 29
bgneal@75 30 # update the topic
bgneal@75 31 post.topic.post_count_update()
bgneal@75 32 post.topic.save()
bgneal@75 33
bgneal@75 34 # update the forum
bgneal@75 35 post.topic.forum.post_count_update()
bgneal@75 36 post.topic.forum.save()
bgneal@75 37
bgneal@75 38
bgneal@75 39 def on_post_delete(sender, **kwargs):
bgneal@75 40 post = kwargs['instance']
bgneal@75 41
bgneal@75 42 # update the topic
bgneal@348 43 try:
bgneal@348 44 post.topic.post_count_update()
bgneal@348 45 post.topic.save()
bgneal@348 46 except Topic.DoesNotExist:
bgneal@348 47 pass
bgneal@348 48 else:
bgneal@348 49 # update the forum
bgneal@348 50 try:
bgneal@348 51 post.topic.forum.post_count_update()
bgneal@348 52 post.topic.forum.save()
bgneal@348 53 except Forum.DoesNotExist:
bgneal@348 54 pass
bgneal@75 55
bgneal@75 56
bgneal@260 57 post_save.connect(on_topic_save, sender=Topic, dispatch_uid='forums.signals')
bgneal@260 58 post_delete.connect(on_topic_delete, sender=Topic, dispatch_uid='forums.signals')
bgneal@75 59
bgneal@260 60 post_save.connect(on_post_save, sender=Post, dispatch_uid='forums.signals')
bgneal@260 61 post_delete.connect(on_post_delete, sender=Post, dispatch_uid='forums.signals')
bgneal@469 62
bgneal@469 63
bgneal@469 64 # Signals for the forums application.
bgneal@469 65 #
bgneal@469 66 # This signal is sent when a topic has had its textual content (title) changed.
bgneal@469 67 # The provided arguments are:
bgneal@469 68 # sender - the topic model instance
bgneal@469 69 # created - True if the topic is new, False if updated
bgneal@469 70
bgneal@470 71 topic_content_update = django.dispatch.Signal(providing_args=['created'])
bgneal@469 72
bgneal@469 73 # This signal is sent when a post has had its textual content (body) changed.
bgneal@469 74 # The provided arguments are:
bgneal@469 75 # sender - the post model instance
bgneal@469 76 # created - True if the post is new, False if updated
bgneal@469 77
bgneal@470 78 post_content_update = django.dispatch.Signal(providing_args=['created'])
bgneal@469 79
bgneal@469 80
bgneal@469 81 def notify_new_topic(topic):
bgneal@469 82 """
bgneal@469 83 Sends the topic_content_update signal for a new topic instance.
bgneal@469 84
bgneal@469 85 """
bgneal@470 86 topic_content_update.send_robust(topic, created=True)
bgneal@469 87
bgneal@469 88
bgneal@469 89 def notify_updated_topic(topic):
bgneal@469 90 """
bgneal@469 91 Sends the topic_content_update signal for an updated topic instance.
bgneal@469 92
bgneal@469 93 """
bgneal@470 94 topic_content_update.send_robust(topic, created=False)
bgneal@469 95
bgneal@469 96
bgneal@469 97 def notify_new_post(post):
bgneal@469 98 """
bgneal@469 99 Sends the post_content_update signal for a new post instance.
bgneal@469 100
bgneal@469 101 """
bgneal@470 102 post_content_update.send_robust(post, created=True)
bgneal@469 103
bgneal@469 104
bgneal@469 105 def notify_updated_post(post):
bgneal@469 106 """
bgneal@469 107 Sends the post_content_update signal for an updated post instance.
bgneal@469 108
bgneal@469 109 """
bgneal@470 110 post_content_update.send_robust(post, created=False)
bgneal@522 111
bgneal@522 112
bgneal@522 113 # Avoid circular imports
bgneal@522 114 import forums.latest