More Py3 compatibility fixes.

[wolnelektury.git] / src / catalogue / signals.py

diff --git a/src/catalogue/signals.py b/src/catalogue/signals.py
index 660d264..d3d6ec3 100644 (file)
--- a/src/catalogue/signals.py
+++ b/src/catalogue/signals.py
@@ -1,9 +1,9 @@
-# -*- coding: utf-8 -*-
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.conf import settings
 from django.core.cache import caches
+from django.core.exceptions import ImproperlyConfigured
 from django.db.models.signals import post_save, post_delete
 from django.dispatch import receiver
 from ssify import flush_ssi_includes
@@ -19,6 +19,7 @@ from .models import BookMedia, Book, Collection, Fragment, Tag
 
 @receiver([post_save, post_delete], sender=BookMedia)
 def bookmedia_save(sender, instance, **kwargs):
+    instance.book.set_audio_length()
     instance.book.save()
 
 
@@ -50,6 +51,11 @@ def collection_delete(sender, instance, **kwargs):
 def book_save(sender, instance, **kwargs):
     # Books come out anywhere.
     caches[settings.CACHE_MIDDLEWARE_ALIAS].clear()
+    # deleting selectively is too much work
+    try:
+        caches['template_fragments'].clear()
+    except ImproperlyConfigured:
+        pass
     instance.flush_includes()
 
 
@@ -92,8 +98,7 @@ def tag_after_change(sender, instance, languages, **kwargs):
 
 @receiver(tags_updated)
 def receive_tags_updated(sender, instance, affected_tags, **kwargs):
-    categories = set(tag.category for tag in affected_tags
-        if tag.category not in ('set', 'book'))
+    categories = set(tag.category for tag in affected_tags if tag.category not in ('set', 'book'))
     if not categories:
         return