protected function _init()
{
// Make the session user always available in every controller:
$this->user = SessionUser::user();
// Might come in handy sometimes: direct access to the DBAL:
$this->db = $GLOBALS['db'];
// Initialize Output/Views (used in 90% of controller actions):
$this->tpl = new Output($this);
$this->tpl->viewLayout = '_layout';
$this->tpl->assign('app', $this);
}