/**
* Constructor.
*
* @param Content_Users_Manager A user manager object.
*/
public function __construct(Content_Users_Manager $userManager)
{
$this->_userManager = $userManager;
try {
$this->_userId = current($this->_userManager->ensureUsers($GLOBALS['registry']->getAuth()));
} catch (Content_Exception $e) {
throw new Trean_Exception($e);
}
}
/**
* Return users related to a given user along with a similarity rank.
*/
public function getSimilarUsers($args)
{
$args['userId'] = current($this->_userManager->ensureUsers($args['userId']));
$radius = isset($args['radius']) ? (int) $args['radius'] : $this->_defaultRadius;
$sql = 'SELECT others.user_id, (others.count - self.count) AS rank FROM ' . $this->_t('user_tag_stats') . ' others INNER JOIN (SELECT tag_id, count FROM ' . $this->_t('user_tag_stats') . ' WHERE user_id = ' . (int) $args['userId'] . ' AND count >= ' . $radius . ') self ON others.tag_id = self.tag_id ORDER BY rank DESC';
if (isset($args['limit'])) {
$sql = $this->_db->addLimitOffset($sql, array('limit' => $args['limit']));
}
return $this->_db->selectAssoc($sql);
}
