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, Image
   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 image_changed(sender, instance, created, **kwargs):
  27     instance.touch()
  28 models.signals.post_save.connect(image_changed, sender=Image)
  29
  30
  31 def user_changed(sender, instance, *args, **kwargs):
  32     books = set()
  33     for c in instance.chunk_set.all():
  34         books.add(c.book)
  35         c.touch()
  36     for b in books:
  37         b.touch()
  38 models.signals.post_save.connect(user_changed, sender=User)
  39
  40
  41 def publish_listener(sender, *args, **kwargs):
  42     sender.touch()
  43     for c in sender:
  44         c.touch()
  45 post_publish.connect(publish_listener, sender=Book)
  46
  47 def publish_listener(sender, *args, **kwargs):
  48     sender.touch()
  49 post_publish.connect(publish_listener, sender=Image)
  50
  51
  52 def chunk_publishable_listener(sender, *args, **kwargs):
  53     sender.tree.touch()
  54     if isinstance(sender.tree, Chunk):
  55         sender.tree.book.touch()
  56 post_publishable.connect(chunk_publishable_listener)
  57
  58 def publishable_listener(sender, *args, **kwargs):
  59     sender.tree.touch()
  60 post_publishable.connect(publishable_listener, sender=Image)
  61
  62
  63 def listener_create(sender, instance, created, **kwargs):
  64     if created:
  65         instance.chunk_set.create(number=1, slug='1')
  66 models.signals.post_save.connect(listener_create, sender=Book)
  67