Service.php

<?php
/**
 * FecShop file.
 *
 * @link http://www.fecshop.com/
 * @copyright Copyright (c) 2016 FecShop Software LLC
 * @license http://www.fecshop.com/license/
 */
namespace fecshop\services;
use Yii;
use yii\base\Component;
use yii\base\InvalidConfigException;
/**
 * @author Terry Zhao <2358269014@qq.com>
 * @since 1.0
 */
class Service extends Component
{
	public $childService;
	public $_childService;
	
	/**
	 * 得到services 里面配置的子服务childService的实例
	 */
	public function getChildService($childServiceName){
		if(!$this->_childService[$childServiceName]){
			$childService = $this->childService;
			if(isset($childService[$childServiceName])){
				$service = $childService[$childServiceName];
				$this->_childService[$childServiceName] = Yii::createObject($service);
			}else{
				throw new InvalidConfigException('Child Service ['.$childServiceName.'] is not find in '.get_called_class().', you must config it! ');
			}
		}
		return $this->_childService[$childServiceName];
	}
	
	/**
	 * 
	 */
	public function __get($attr){
		return $this->getChildService($attr);
		
	}
	
}