Yii中特殊行为ActionFilter的使用方法示例

新建 app\filters\loggingfilter 继承 yii\base\actionfilter

loggingfilter 的功能: 在指定请求的 action 前后各记录一条日志

<?php

namespace app\filters;

use yii\base\actionfilter;

class loggingfilter extends actionfilter
{
 public function beforeaction($action)
 {
  parent::beforeaction($action);

  // to do something
  printf('this is a logging for %s\beforeaction.%s', $this->getactionid($action), php_eol);

  return true;
 }

 public function afteraction($action, $result)
 {
  parent::afteraction($action, $result);

  // to do something
  printf('this is a logging for %s\afteraction.%s', $this->getactionid($action), php_eol);

  return true;
 }
}

新建 app\controllers\systemcontroller

<?php

namespace app\controllers;

use app\filters\loggingfilter;

class systemcontroller extends \yii\web\controller
{
 public function behaviors()
 {
  parent::behaviors();

  return [
   'anchorauth' => [
    'class' => loggingfilter::classname(),
    'only' => ['test', 'test-one'], // 仅对 'test'、'test-one' 生效
    'except' => ['test-one'], // 排除 'test-one'
   ],
  ];
 }

 public function actiontestone()
 {
  printf('this is a testing for %s.%s', $this->getroute(), php_eol);
 }

 public function actiontesttwo()
 {
  printf('this is a testing for %s.%s', $this->getroute(), php_eol);
 }

 public function actiontest()
 {
  printf('this is a testing for %s.%s', $this->getroute(), php_eol);
 }
}

测试

请求

this is a logging for test\beforeaction.
this is a testing for system/test.
this is a logging for test\afteraction.

请求

this is a testing for system/test-one.

请求

this is a testing for system/test-two.

总结

yii 中的 actionfilter（过滤器）相当于 laravel 中的 middleware（中间件），beforeaction 相当于前置中间件，afteraction 相当于后置中间件。

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