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;
	}
        ......

}