php - Handling Guests in Yii2 to prevent constant checks -

i'm wondering recommended way handle guests in yii2.

like, example when have logged in user can details via call such as:

$user = yii::$app->user->identity; 

then can stuff below, depending on details made available them:

$user->username; $user->email; 

however, when have guest yii::$app->user->identity returns null.

in situation need check if user guest or logged in user , hence have repeat code in various places:

if (yii::$app->user->isguest) {     $username = yii::t('general', 'guest'); } else {     $username = yii::$app->user->identity->username; } 

...doing on place not maintainable, wanting come solution can reference username without having check - still guest checks needed security purposes, i'm trying write maintainable code , such want come solution purposes need information such username.

i not sure if there recommended way in yii2, thought perhaps extending yii\web\user class , doing below:

public function getidentity() {      $identity = parent::getidentity();      if (empty($identity)) {         $identity = new stdclass();         $identity->username = yii::t('general', 'guest');     }      return $identity;  } 

is advisable way achieve want or there better way?

extending user idea, you'd better add there new method getusername() or getattributes() returning identity/guest default data. way destroy user's 'getisguest' method based on 'getidentity' null/not null return. , believe method essential , changing it's response break lot of other things in app.

update. may set extended user class in config->components->user->class:

[     'components' => [         'user' => [             'class' => 'my\namespace\user'         ]     ] ]