<?php
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/**
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* PhalApi_Request_Formatter_Callable 格式化回调类型
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*
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* @package PhalApi\Request
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* @license http://www.phalapi.net/license GPL 协议
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* @link http://www.phalapi.net/
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* @author dogstar <chanzonghuang@gmail.com> 2015-11-07
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*/
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class PhalApi_Request_Formatter_Callable extends PhalApi_Request_Formatter_Base implements PhalApi_Request_Formatter {
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/**
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* 对回调类型进行格式化
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*
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* @param mixed $value 变量值
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* @param array $rule array('callback' => '回调函数', 'params' => '第三个参数')
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* @return boolean/string 格式化后的变量
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*
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*/
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public function parse($value, $rule) {
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$callback = isset($rule['callback'])
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? $rule['callback']
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: (isset($rule['callable']) ? $rule['callable'] : NULL);
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// 提前触发回调类的加载，以便能正常回调
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if (is_array($callback) && count($callback) >= 2 && is_string($callback[0])) {
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// Type 2：静态类方法，如：array('MyClass', 'myCallbackMethod')
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class_exists($callback[0]);
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} else if (is_string($callback) && preg_match('/(.*)\:\:/', $callback, $macthes)) {
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// Type 4：静态类方法，如：'MyClass::myCallbackMethod'
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class_exists($macthes[1]);
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}
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if (empty($callback) || !is_callable($callback)) {
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throw new PhalApi_Exception_InternalServerError(
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T('invalid callback for rule: {name}', array('name' => $rule['name']))
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);
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}
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if (isset($rule['params'])) {
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return call_user_func($callback, $value, $rule, $rule['params']);
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} else {
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return call_user_func($callback, $value, $rule);
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}
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}
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}
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