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Diffstat (limited to '_darcs/pristine/actions/tag.php')
| -rw-r--r-- | _darcs/pristine/actions/tag.php | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/_darcs/pristine/actions/tag.php b/_darcs/pristine/actions/tag.php new file mode 100644 index 000000000..25cc853c4 --- /dev/null +++ b/_darcs/pristine/actions/tag.php @@ -0,0 +1,165 @@ +<?php +/* + * Laconica - a distributed open-source microblogging tool + * Copyright (C) 2008, Controlez-Vous, Inc. + * + * 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/>. + */ + +if (!defined('LACONICA')) { exit(1); } + +require_once(INSTALLDIR.'/actions/showstream.php'); +define('TAGS_PER_PAGE', 100); + +class TagAction extends StreamAction { + + function handle($args) { + + parent::handle($args); + + # Looks like we're good; show the header + + if (isset($args['tag']) && $args['tag']) { + $tag = $args['tag']; + common_show_header(sprintf(_("Notices tagged with %s"), $tag), + array($this, 'show_header'), $tag, + array($this, 'show_top')); + $this->show_notices($tag); + } else { + common_show_header(_("Tags"), + array($this, 'show_header'), '', + array($this, 'show_top')); + $this->show_tags(); + } + + common_show_footer(); + } + + function show_header($tag = false) { + if ($tag) { + common_element('link', array('rel' => 'alternate', + 'href' => common_local_url('tagrss', array('tag' => $tag)), + 'type' => 'application/rss+xml', + 'title' => sprintf(_('Feed for tag %s'), $tag))); + } + } + + function get_instructions() { + return _('Showing most popular tags from the last week'); + } + + function show_top($tag = false) { + if (!$tag) { + $instr = $this->get_instructions(); + $output = common_markup_to_html($instr); + common_element_start('div', 'instructions'); + common_raw($output); + common_element_end('div'); + $this->public_views_menu(); + } + else { + $this->show_feeds_list(array(0=>array('href'=>common_local_url('tagrss'), + 'type' => 'rss', + 'version' => 'RSS 1.0', + 'item' => 'tagrss'))); + } + } + + function show_tags() + { + # This should probably be cached rather than recalculated + $tags = DB_DataObject::factory('Notice_tag'); + + #Need to clear the selection and then only re-add the field + #we are grouping by, otherwise it's not a valid 'group by' + #even though MySQL seems to let it slide... + $tags->selectAdd(); + $tags->selectAdd('tag'); + + #Add the aggregated columns... + $tags->selectAdd('max(notice_id) as last_notice_id'); + if(common_config('db','type')=='pgsql') { + $calc='sum(exp(-extract(epoch from (now()-created))/%s)) as weight'; + } else { + $calc='sum(exp(-(now() - created)/%s)) as weight'; + } + $tags->selectAdd(sprintf($calc, common_config('tag', 'dropoff'))); + $tags->groupBy('tag'); + $tags->orderBy('weight DESC'); + + # $tags->whereAdd('created > "' . strftime('%Y-%m-%d %H:%M:%S', strtotime('-1 MONTH')) . '"'); + + $tags->limit(TAGS_PER_PAGE); + + $cnt = $tags->find(); + + if ($cnt > 0) { + common_element_start('p', 'tagcloud'); + + $tw = array(); + $sum = 0; + while ($tags->fetch()) { + $tw[$tags->tag] = $tags->weight; + $sum += $tags->weight; + } + + ksort($tw); + + foreach ($tw as $tag => $weight) { + $this->show_tag($tag, $weight, $weight/$sum); + } + + common_element_end('p'); + } + } + + function show_tag($tag, $weight, $relative) { + + # XXX: these should probably tune to the size of the site + if ($relative > 0.1) { + $cls = 'largest'; + } else if ($relative > 0.05) { + $cls = 'verylarge'; + } else if ($relative > 0.02) { + $cls = 'large'; + } else if ($relative > 0.01) { + $cls = 'medium'; + } else if ($relative > 0.005) { + $cls = 'small'; + } else if ($relative > 0.002) { + $cls = 'verysmall'; + } else { + $cls = 'smallest'; + } + + common_element('a', array('class' => "$cls weight-$weight relative-$relative", + 'href' => common_local_url('tag', array('tag' => $tag))), + $tag); + common_text(' '); + } + + function show_notices($tag) { + + $cnt = 0; + + $page = ($this->arg('page')) ? ($this->arg('page')+0) : 1; + + $notice = Notice_tag::getStream($tag, (($page-1)*NOTICES_PER_PAGE), NOTICES_PER_PAGE + 1); + + $cnt = $this->show_notice_list($notice); + + common_pagination($page > 1, $cnt > NOTICES_PER_PAGE, + $page, 'tag', array('tag' => $tag)); + } +} |