yii中使用event dispatcher
yii中使用event dispatcher

一、安装与配置
1，原理与安装
event dispatcher主要是用来解耦，否则不要使用，因为相对而言，算是重量级的应用。

参考官方网址：
http://components.symfony-project.org/event-dispatcher/


2，在yii中的配置
在Yii的配置文件../config/main.php中引用

//预加载，即在load前载入该组件'preload'=>array('log', 'exception_watcher', 'os_handler', 'fp_handler'),//注册组件'components'=>array(......//注册event dispatcher'dispatcher' => array('class' => 'application.extensions.event_dispatcher.EventDispatcher'),'fp_handler' => array('class' => 'application.components.FailPartsHandler',),......),

3，注册组件时引入的EventDispatcher.php

require_once dirname(__FILE__) . '/event-dispatcher/lib/sfEventDispatcher.php';/** * It's a simple wrapper for sfEventDispatcher * */class EventDispatcher  extends sfEventDispatcher {public function init() {}}

二、使用
1，在函数中使用

$event = new sfEvent($this, 'failParts.create', array('Oid'=>$params['Oid']));$str = Yii::app()->dispatcher->notify($event);return $str->getReturnValue();

2，在component/XXHandler.php文件中调用

class FailPartsHandler {     public function init() {$dispatcher = Yii::app()->dispatcher;$handlers = array('failParts.create'   => 'onCreate','failParts.partsMans'   => 'onPartsMans','failParts.workers'  => 'onGetWorkers','failParts.floors'  => 'onGetFloorsByIdcName','failParts.sendApprove'  => 'onSendApprove','failParts.rmsPreShow'  => 'onRMSPreShow','failParts.outConfirm'  => 'onOutConfirm',);// event名称  回调函数foreach($handlers as $event_name => $handle_method) {$dispatcher->connect($event_name, array($this, $handle_method));}}    public function onCreate($event) {// 1,通过$event传回参数$outsource = $event->getSubject();$Oid = $event['Oid'];// 2,调用XX soap接口(非模拟)$result = $this->getRMSClient()->getServerInfoByOid(RMSClient::buildHeader(),$Oid);// 3,将从XX获取的数据返回调用函数$event->setReturnValue($result);return true;}        ......}