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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2013-2016 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.
import hashlib
import random
from django.conf import settings
from django.core.cache import cache
from django.core.urlresolvers import reverse
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _, ugettext
from django.template.defaultfilters import slugify
def get_cache(cls, extra_args=[]):
cache_key = u"{}-{}-{}".format(
settings.PROJECT_SLUG, cls._meta.app_label, 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)
if not cache_key.endswith('_current_keys') \
and hasattr(cls, '_add_cache_key_to_refresh'):
cls._add_cache_key_to_refresh(extra_args)
if len(cache_key) >= 250:
m = hashlib.md5()
m.update(cache_key)
cache_key = m.hexdigest()
return cache_key, cache.get(cache_key)
def cached_label_changed(sender, **kwargs):
if not kwargs.get('instance'):
return
instance = kwargs.get('instance')
if hasattr(instance, '_cached_label_checked'):
return
instance._cached_label_checked = True
lbl = instance._generate_cached_label()
if lbl != instance.cached_label:
instance.skip_history_when_saving = True
instance.cached_label = lbl
instance.save()
if hasattr(instance, '_get_associated_cached_labels'):
for item in instance._get_associated_cached_labels():
cached_label_changed(item.__class__, instance=item)
SHORTIFY_STR = ugettext(" (...)")
def shortify(lbl, number=20):
if len(lbl) <= number:
return lbl
return lbl[:number - len(SHORTIFY_STR)] + SHORTIFY_STR
def mode(array):
most = max(list(map(array.count, array)))
return list(set(filter(lambda x: array.count(x) == most, array)))
def _get_image_link(item):
# manage missing images
if not item.thumbnail or not item.thumbnail.url:
return ""
return mark_safe(u"""
<div class="welcome-image">
<img src="{}"/><br/>
<em>{} - {}</em>
<a href="#" onclick="load_window(\'{}\')">
<i class="fa fa-info-circle" aria-hidden="true"></i>
</a>
<a href="." title="{}">
<i class="fa fa-random" aria-hidden="true"></i>
</a><br/>
</div>""".format(
item.thumbnail.url,
unicode(item.__class__._meta.verbose_name),
unicode(item),
reverse(item.SHOW_URL, args=[item.pk, '']),
unicode(_(u"Load another random image?"))))
def get_random_item_image_link(request):
from archaeological_operations.models import Operation
from archaeological_context_records.models import ContextRecord
from archaeological_finds.models import Find
ope_image_nb, cr_image_nb, find_image_nb = 0, 0, 0
q_ope = Operation.objects.filter(
thumbnail__isnull=False).exclude(thumbnail='')
q_cr = ContextRecord.objects.filter(
thumbnail__isnull=False).exclude(thumbnail='')
q_find = Find.objects.filter(
thumbnail__isnull=False).exclude(thumbnail='')
if request.user.has_perm('archaeological_operations.view_operation',
Operation):
ope_image_nb = q_ope.count()
if request.user.has_perm(
'archaeological_context_records.view_contextrecord',
ContextRecord):
cr_image_nb = q_cr.count()
if request.user.has_perm('archaeological_finds.view_find',
Find):
find_image_nb = q_find.count()
image_total = ope_image_nb + cr_image_nb + find_image_nb
if not image_total:
return ''
image_nb = random.randint(0, image_total - 1)
if image_nb >= 0 and image_nb < ope_image_nb:
return _get_image_link(q_ope.all()[image_nb])
if image_nb >= ope_image_nb and image_nb < (cr_image_nb + ope_image_nb):
return _get_image_link(q_cr.all()[image_nb - ope_image_nb])
if image_nb >= (cr_image_nb + ope_image_nb):
return _get_image_link(q_find.all()[
image_nb - ope_image_nb - cr_image_nb])
# should never happen except in case of deletion during the excution
return ''
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