Souke/backend/controllers/BackendController.php

<?php

namespace backend\controllers;

use yii ;

class BackendController extends \yii\web\Controller 
{
    
    public function beforeAction($event)
    {   
        if(Yii::$app->user->identity->etatPaiementEtablissement() == 'essai-terminee')
        {
            $this->redirect(['paiement/index']) ;
        }
        
        return parent::beforeAction($event);
    }
    
}

?>