Improve cached_label managemnent

* more genericity
* adapt it to archaeological files

1 files changed, 27 insertions, 0 deletions

diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
new file mode 100644
index 000000000..50f4a6b41
--- /dev/null
+++ b/ishtar_common/utils.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (C) 2013 Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# See the file COPYING for details.
+
+def cached_label_changed(sender, **kwargs):
+    if not kwargs.get('instance'):
+        return
+    instance = kwargs.get('instance')
+    lbl = instance._generate_cached_label()
+    if lbl != instance.cached_label:
+        instance.cached_label = lbl
+        instance.save()