gnu-social/actions/peopletag.php

<?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.'/lib/profilelist.php');

class PeopletagAction extends Action {
    
    function handle($args)
    {

        parent::handle($args);

        $tag = $this->trimmed('tag');
        
        if (!common_valid_profile_tag($tag)) {
            $this->client_error(sprintf(_('Not a valid people tag: %s'), $tag));
            return;
        }

        $page = $this->trimmed('page');
        
        if (!$page) {
            $page = 1;
        }
        
        # Looks like we're good; show the header

        common_show_header(sprintf(_('Users self-tagged with %s - page %d'), $tag, $page),
                           null, $tag, array($this, 'show_top'));

        $this->show_people($tag, $page);

        common_show_footer();
    }

    function show_people($tag, $page)
    {
        
        $profile = new Profile();

        $offset = ($page-1)*PROFILES_PER_PAGE;
        $limit = PROFILES_PER_PAGE + 1;
        
        if (common_config('db','type') == 'pgsql') {
            $lim = ' LIMIT ' . $limit . ' OFFSET ' . $offset;
        } else {
            $lim = ' LIMIT ' . $offset . ', ' . $limit;
        }

        # XXX: memcached this
        
        $profile->query(sprintf('SELECT profile.* ' .
                                'FROM profile JOIN profile_tag ' .
                                'ON profile.id = profile_tag.tagger ' .
                                'WHERE profile_tag.tagger = profile_tag.tagged ' .
                                'AND tag = "%s" ' .
                                'ORDER BY profile_tag.modified DESC ' . 
                                $lim, $tag));

        $pl = new ProfileList($profile);
        $cnt = $pl->show_list();
        
        common_pagination($page > 1,
                          $cnt > PROFILES_PER_PAGE,
                          $page,
                          $this->trimmed('action'),
                          array('tag' => $tag));
    }
    
    function show_top($tag)
    {
        $instr = sprintf(_('These are users who have tagged themselves "%s" ' .
                           'to show a common interest, characteristic, hobby or job.'), $tag);
        common_element_start('div', 'instructions');
        common_element_start('p');
        common_text($instr);
        common_element_end('p');
        common_element_end('div');
    }

    function get_title()
    {
        return null;
    }

    function show_header($arr)
    {
        return;
    }
}