<?php /** * Laconica, the distributed open-source microblogging tool * * Base class for sections showing lists of notices * * PHP version 5 * * LICENCE: 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/>. * * @category Widget * @package Laconica * @author Evan Prodromou <evan@controlyourself.ca> * @copyright 2009 Control Yourself, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://laconi.ca/ */ if (!defined('LACONICA')) { exit(1); } /** * Base class for sections showing lists of notices * * These are the widgets that show interesting data about a person * group, or site. * * @category Widget * @package Laconica * @author Evan Prodromou <evan@controlyourself.ca> * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://laconi.ca/ */ class PopularNoticeSection extends NoticeSection { function getNotices() { if (common_config('db', 'type') == 'pgsql') { $weightexpr='sum(exp(-extract(epoch from (now() - fave.modified)) / %s))'; if (!empty($this->out->tag)) { $tag = pg_escape_string($this->tag); } } else { $weightexpr='sum(exp(-(now() - fave.modified) / %s))'; if (!empty($this->out->tag)) { $tag = mysql_escape_string($this->out->tag); } } $qry = "SELECT notice.*, $weightexpr as weight "; if(isset($tag)) { $qry .= 'FROM notice_tag, notice JOIN fave ON notice.id = fave.notice_id ' . "WHERE notice.id = notice_tag.notice_id and '$tag' = notice_tag.tag"; } else { $qry .= 'FROM notice JOIN fave ON notice.id = fave.notice_id'; } $qry .= ' GROUP BY notice.id,notice.profile_id,notice.content,notice.uri,' . 'notice.rendered,notice.url,notice.created,notice.modified,' . 'notice.reply_to,notice.is_local,notice.source ' . 'ORDER BY weight DESC'; $offset = 0; $limit = NOTICES_PER_SECTION + 1; if (common_config('db', 'type') == 'pgsql') { $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset; } else { $qry .= ' LIMIT ' . $offset . ', ' . $limit; } $notice = Memcached_DataObject::cachedQuery('Notice', sprintf($qry, common_config('popular', 'dropoff')), 1200); return $notice; } function title() { return _('Popular notices'); } function divId() { return 'popular_notices'; } function moreUrl() { return common_local_url('favorited'); } }