af95005bc4
Consolidated several separate implementations of the same weighting algorithm into common_sql_weight() and fixed some bugs... For MySQL, now using timestampdiff() instead of subtraction for the comparison, so we get sane results when the year doesn't match, and utc_timestamp() rather than now() so we don't get negative ages for recent items with local server timezone. Unknown whether the same problems affect PostgreSQL, but note that it lacks the timestampdiff() SQL function.
101 lines
3.3 KiB
PHP
101 lines
3.3 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Base class for sections showing lists of notices
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Widget
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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/**
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* Base class for sections showing lists of notices
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*
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* These are the widgets that show interesting data about a person
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* group, or site.
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*
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* @category Widget
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class PopularNoticeSection extends NoticeSection
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{
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function getNotices()
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{
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// @fixme there should be a common func for this
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if (common_config('db', 'type') == 'pgsql') {
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if (!empty($this->out->tag)) {
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$tag = pg_escape_string($this->out->tag);
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}
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} else {
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if (!empty($this->out->tag)) {
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$tag = mysql_escape_string($this->out->tag);
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}
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}
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$weightexpr = common_sql_weight('fave.modified', common_config('popular', 'dropoff'));
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$qry = "SELECT notice.*, $weightexpr as weight ";
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if(isset($tag)) {
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$qry .= 'FROM notice_tag, notice JOIN fave ON notice.id = fave.notice_id ' .
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"WHERE notice.id = notice_tag.notice_id and '$tag' = notice_tag.tag";
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} else {
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$qry .= 'FROM notice JOIN fave ON notice.id = fave.notice_id';
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}
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$qry .= ' GROUP BY notice.id,notice.profile_id,notice.content,notice.uri,' .
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'notice.rendered,notice.url,notice.created,notice.modified,' .
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'notice.reply_to,notice.is_local,notice.source,notice.conversation, ' .
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'notice.lat,notice.lon,location_id,location_ns' .
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' ORDER BY weight DESC';
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$offset = 0;
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$limit = NOTICES_PER_SECTION + 1;
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$qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
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$notice = Memcached_DataObject::cachedQuery('Notice',
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$qry,
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1200);
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return $notice;
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}
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function title()
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{
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return _('Popular notices');
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}
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function divId()
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{
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return 'popular_notices';
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}
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function moreUrl()
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{
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return common_local_url('favorited');
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}
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}
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