Mercurial > public > sg101
annotate potd/signals.py @ 629:f4c043cf55ac
Wiki integration. Requests don't always have sessions.
In particular this occurs when a request is made without a trailing slash.
The Common middleware redirects when this happens, and the middleware
process_request() processing stops before a session can get added.
So just set an attribute on the request object for each operation.
This seemed weird to me at first, but there are plenty of examples of this
in the Django code base already.
| author | Brian Neal <bgneal@gmail.com> |
|---|---|
| date | Tue, 13 Nov 2012 13:50:06 -0600 |
| parents | ee87ea74d46b |
| children |
| rev | line source |
|---|---|
| bgneal@532 | 1 """ |
| bgneal@532 | 2 Signal handlers for the potd application. |
| bgneal@532 | 3 |
| bgneal@532 | 4 """ |
| bgneal@532 | 5 from django.db.models.signals import post_save, post_delete |
| bgneal@532 | 6 |
| bgneal@532 | 7 from potd.models import Photo, Sequence |
| bgneal@532 | 8 |
| bgneal@532 | 9 |
| bgneal@532 | 10 def on_photo_save(sender, **kwargs): |
| bgneal@532 | 11 """ |
| bgneal@532 | 12 This function is executed when a Photo is saved. It inserts the photo into |
| bgneal@532 | 13 the current sequence. |
| bgneal@532 | 14 |
| bgneal@532 | 15 """ |
| bgneal@532 | 16 photo = kwargs['instance'] |
| bgneal@532 | 17 Sequence.objects.insert_photo(photo.pk) |
| bgneal@532 | 18 |
| bgneal@532 | 19 |
| bgneal@532 | 20 def on_photo_delete(sender, **kwargs): |
| bgneal@532 | 21 """ |
| bgneal@532 | 22 This function is executed when a Photo is deleted. It removes the photo from |
| bgneal@532 | 23 the current sequence of photos. |
| bgneal@532 | 24 |
| bgneal@532 | 25 """ |
| bgneal@532 | 26 photo = kwargs['instance'] |
| bgneal@532 | 27 Sequence.objects.remove_photo(photo.pk) |
| bgneal@532 | 28 |
| bgneal@532 | 29 |
| bgneal@532 | 30 post_save.connect(on_photo_save, sender=Photo, dispatch_uid='potd.signals') |
| bgneal@532 | 31 post_delete.connect(on_photo_delete, sender=Photo, dispatch_uid='potd.signals') |