/**
* 所有系统都跳转到sso 统一退出，退出后sso通知其他主系统进行退出，然后跳转回子系统
* @author Allon<*****@*****.**>
* @dateTime 2015-12-09T15:17:51+0800
* @return [type] [description]
*/
public function actionLogout()
{
$user = Yii::$app->user->getIdentity();
$clients = Client::getClientLogoutHash();
Yii::$app->user->logout();
return $this->render('notify', ['clients' => $clients, 'redirect' => '/']);
}
