logSystem-advance/backend/controllers/BaseController.php

<?php
namespace backend\controllers;

use components\Exception;
use yii\web\Controller;

/**
 * Class BaseController
 * @package backend\controllers
 */
class BaseController extends Controller
{
	/**
	 * init
	 */
	public function init()
	{
		\Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
		parent::init();
	}

	/**
	 * beforeAction
	 * @return bool
	 * @throws Exception
	 */
	public function beforeAction($action)
	{
		try {
			return parent::beforeAction($action);

		} catch (\Exception $e) {
			throw new Exception($e->statusCode, $e->getMessage());
		}
	}
}