YII Framework Behavior behaviors Usage Example

This article illustrates the YII framework behavior behaviors usage. Share it for your reference, as follows:

Document frontend/libs/FilterTest. php

<?php
/**
 * Created by PhpStorm.
 * Date: 2016/5/27
 * Time: 14:16
 */
namespace frontend\libs;
use Yii;
use yii\base\Action;
use yii\base\ActionFilter;
class FilterTest extends ActionFilter{
  // In action Can be used to filter input 
  public function beforeAction($action) {
    echo ' When calling action Front display <br/>';
    return TRUE;// If the return value is false, Then action Will not run 
  }
  // In action After that, it can be used to filter the output 
  public function afterAction($action, $result) {
    return $result.' When calling action Back display <br/>';// Can be right action Output $result Filter, retun The contents of will be displayed directly 
  }
}

frontend/controllers/TestbehaviorController.php

<?php
/**
 * Created by PhpStorm.
 * Date: 2016/5/27
 * Time: 14:19
 */
 namespace frontend\controllers;
 use yii\web\controller;
class TestbehaviorController extends Controller{
  public function behaviors(){
    return [
      'test'=>[
       'class'=>'frontend\libs\FilterTest',// Invoke filter 
      ],
    ];
  }
  public function actionFilter(){
    return " Current action Display <br/>";// The returned content is submitted to the filter, and the afterAction Deal with 
  }
}

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I hope this article is helpful to PHP programming based on Yii framework.