mygpo/data/signals.py

   1 from django.db.models.signals import post_save, pre_delete
   2 from mygpo.data.models import DirectoryEntry
   3 from mygpo.data.directory import get_source_weights, get_weighted_tags, get_weighted_group_tags
   4
   5
   6 def update_podcast_tag_entry(sender, instance=False, **kwargs):
   7
   8     if not instance:
   9         return
  10
  11     source_weights = get_source_weights()
  12
  13     if not instance.podcast.group:
  14         DirectoryEntry.objects.filter(podcast=instance.podcast).delete()
  15
  16         for tag, weight in get_weighted_tags(instance.podcast, source_weights).iteritems():
  17             if weight == 0:
  18                 continue
  19
  20             DirectoryEntry.objects.create(podcast=instance.podcast, tag=tag, ranking=weight)
  21
  22     else:
  23         DirectoryEntry.objects.filter(podcast_group=instance.podcast.group).delete()
  24
  25         for tag, weight in get_weighted_group_tags(instance.podcast.group, source_weights).iteritems():
  26             if weight == 0:
  27                 continue
  28
  29             DirectoryEntry.objects.create(podcast_group=instance.podcast.group, tag=tag, ranking=weight)
  30