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#!/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.
from django.core.cache import cache
from django.utils.translation import ugettext
from django.template.defaultfilters import slugify
def get_cache(cls, extra_args=[]):
cache_key = cls.__name__
for arg in extra_args:
if not arg:
cache_key += '-0'
else:
if type(arg) == dict:
cache_key += '-' + "_".join([unicode(arg[k]) for k in arg])
elif type(arg) in (list, tuple):
cache_key += '-' + "_".join([unicode(v) for v in arg])
else:
cache_key += '-' + unicode(arg)
cache_key = slugify(cache_key)
return cache_key, cache.get(cache_key)
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()
SHORTIFY_STR = ugettext(" (...)")
def shortify(lbl, number=20):
if len(lbl) <= number:
return lbl
return lbl[:number-len(SHORTIFY_STR)] + SHORTIFY_STR
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