Refactored for events system

modules/BaseModule.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace app\modules;
+
+use yii\base\Module;
+
+abstract class BaseModule extends Module
+{
+    /**
+     * @return array
+     */
+    public static function getEventHandlers()
+    {
+        return [];
+    }
+}