add role checking to controllers

backend/views/layouts/main.php

@@ -10,6 +10,7 @@ use yii\bootstrap\NavBar;
 use yii\widgets\Breadcrumbs;
 use common\widgets\Alert;
 use backend\components\AdminMenuStructure;
+use kartik\widgets\AlertBlock;
 
 AppAsset::register($this);
 
@@ -49,7 +50,14 @@ $items = $adminMenu->run();
         <?= Breadcrumbs::widget([
             'links' => isset($this->params['breadcrumbs']) ? $this->params['breadcrumbs'] : [],
         ]) ?>
-        <?= Alert::widget() ?>
+        <?php //echo Alert::widget() ?>
+        <?php 
+        echo AlertBlock::widget([
+        		'useSessionFlash' => true,
+        		'type' => AlertBlock::TYPE_GROWL,
+        		'delay' => '1'
+        		]);
+        ?>
         <?= $content ?>
     </div>
 </div>