//$this->who = $au && !empty($au->name) ? $au->name : '';
if (empty($au) || (isset($au->id) && empty($au->id))) {
// not authenticated - and a standard id based object
//$this->who = $au && !empty($au->name) ? $au->name : '';
if (empty($au) || (isset($au->id) && empty($au->id))) {
// not authenticated - and a standard id based object