apps/catalogue/models/listeners.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
   4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   5 #
   6 from django.contrib.auth.models import User
   7 from django.db import models
   8 from catalogue.models import Book, Chunk
   9 from catalogue.signals import post_publish
  10 from dvcs.signals import post_publishable
  11
  12
  13 def book_changed(sender, instance, created, **kwargs):
  14     instance.touch()
  15     for c in instance:
  16         c.touch()
  17 models.signals.post_save.connect(book_changed, sender=Book)
  18
  19
  20 def chunk_changed(sender, instance, created, **kwargs):
  21     instance.book.touch()
  22     instance.touch()
  23 models.signals.post_save.connect(chunk_changed, sender=Chunk)
  24
  25
  26 def user_changed(sender, instance, *args, **kwargs):
  27     books = set()
  28     for c in instance.chunk_set.all():
  29         books.add(c.book)
  30         c.touch()
  31     for b in books:
  32         b.touch()
  33 models.signals.post_save.connect(user_changed, sender=User)
  34
  35
  36 def publish_listener(sender, *args, **kwargs):
  37     sender.book.touch()
  38     for c in sender.book:
  39         c.touch()
  40 post_publish.connect(publish_listener)
  41
  42
  43 def publishable_listener(sender, *args, **kwargs):
  44     sender.tree.touch()
  45     sender.tree.book.touch()
  46 post_publishable.connect(publishable_listener)
  47
  48
  49 def listener_create(sender, instance, created, **kwargs):
  50     if created:
  51         instance.chunk_set.create(number=1, slug='1')
  52 models.signals.post_save.connect(listener_create, sender=Book)
  53