/**
* Return auth provider code by id
*
* @param type $code
* @return type
* @throws \CException
*/
public static function getIdByCode($code)
{
$row = AuthProvider::model()->find('code = :code', array(':code' => $code));
if (!$row) {
throw new \CException("Undefined auth provider code {$code}");
}
return $row->id;
}