--- /dev/null
+# -*- 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.db.models.signals import post_save, post_delete
+from django.dispatch import receiver
+
+from funding.models import Spent
+from infopages.models import InfoPage
+from libraries.models import Catalog, Library
+from pdcounter.models import Author, BookStub
+
+
+@receiver([post_save, post_delete])
+def flush_views_after_manual_change(sender, **kwargs):
+ """Flushes views cache after changes with some models.
+
+ Changes to those models happen infrequently, so we can afford
+ to just flush the cache on those instances.
+
+ If changes become too often, relevant bits should be separated
+ as ssi_included views and flushed individually when needed.
+
+ """
+ if sender in (Catalog, Library, InfoPage, Author, BookStub, Spent):
+ caches[settings.CACHE_MIDDLEWARE_ALIAS].clear()