From: Jan Szejko <janek37@gmail.com>
Date: Wed, 4 Jul 2018 07:23:42 +0000 (+0200)
Subject: clear cached template fragments on book save
X-Git-Url: https://git.mdrn.pl/wolnelektury.git/commitdiff_plain/10b367c03d1e3a8ad6e365b02a7234bfd640e3f6?hp=2983d583c9de4c33ed73d6c06d9d6eb54b30f15e

clear cached template fragments on book save
---

diff --git a/src/catalogue/fields.py b/src/catalogue/fields.py
index 1ed34e2c5..92e8de48c 100644
--- a/src/catalogue/fields.py
+++ b/src/catalogue/fields.py
@@ -109,9 +109,12 @@ class BuildEbook(Task):
         fieldfile.save(None, File(open(out.get_filename())), save=False)
         self.set_file_permissions(fieldfile)
         if book.pk is not None:
-            type(book).objects.filter(pk=book.pk).update(**{
+            books = type(book).objects.filter(pk=book.pk)
+            books.update(**{
                 fieldfile.field.attname: fieldfile
             })
+            for book in books:
+                book.save()  # just to trigger post-save
         if fieldfile.field.format_name in app_settings.FORMAT_ZIPS:
             remove_zip(app_settings.FORMAT_ZIPS[fieldfile.field.format_name])
 # Don't decorate BuildEbook, because we want to subclass it.
diff --git a/src/catalogue/signals.py b/src/catalogue/signals.py
index f3cacaaf7..28d84bece 100644
--- a/src/catalogue/signals.py
+++ b/src/catalogue/signals.py
@@ -4,6 +4,7 @@
 #
 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
@@ -51,6 +52,11 @@ 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()