yii2 identity session expiry

Question

I am new to yii2 framework and I am facing a problem with the identity. when the session timeouts or when I change my user status to inactive I am getting an error of Trying to get property of non-object from the user component.

public function getName()
{
    return \Yii::$app->user->identity->username;
}

as I am retrieving this value in the header of the website, I want to redirect to login page instead of showing this error

Answer 1

As good practice you should use Access Control Filters in your controller. Please refer to this link to get an idea on how to implement authorisation in your controllers.

Answer 2

In Controller file you should put:

if (\Yii::$app->user->isGuest) {
   return $this->redirect(["site/login"]);
}

It's because "identity" is set only on users who are logged in.. So you can't access identity because he is guest..

https://www.yiiframework.com/doc/api/2.0/yii-web-user# $isGuest-detail