3 * Laconica, the distributed open-source microblogging tool
5 * Base class for sections showing lists of notices
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Evan Prodromou <evan@controlyourself.ca>
25 * @copyright 2009 Control Yourself, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://laconi.ca/
30 if (!defined('LACONICA')) {
35 * Base class for sections showing lists of notices
37 * These are the widgets that show interesting data about a person
42 * @author Evan Prodromou <evan@controlyourself.ca>
43 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
44 * @link http://laconi.ca/
47 class PopularNoticeSection extends NoticeSection
51 if (common_config('db', 'type') == 'pgsql') {
52 $weightexpr='sum(exp(-extract(epoch from (now() - fave.modified)) / %s))';
54 $weightexpr='sum(exp(-(now() - fave.modified) / %s))';
57 $qry = 'SELECT notice.id, '.
58 $weightexpr . ' as weight ' .
59 'FROM notice JOIN fave ON notice.id = fave.notice_id ' .
60 'GROUP BY notice.id ' .
61 'ORDER BY weight DESC';
64 $limit = NOTICES_PER_SECTION + 1;
66 if (common_config('db', 'type') == 'pgsql') {
67 $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
69 $qry .= ' LIMIT ' . $offset . ', ' . $limit;
72 $notice = Memcached_DataObject::cachedQuery('Notice',
73 sprintf($qry, common_config('popular', 'dropoff')),
80 return _('Popular notices');
85 return 'popular_notices';
90 return common_local_url('favorited');