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What does page controller mean in php?
- 零下一度Original
- 2017-06-23 13:17:102850browse
<?php/*页面控制器模式：按我的理解就是将业务逻辑和视图分离开来（通常最简便的写法是php和html代码是混合在一个文件里面的），
即一个业务逻辑文件对应一个视图文件。
代码示例即注解如下:*///页面控制器模式namespace woo\controller;//业务逻辑文件 (文件名AddVenue.php)abstract class PageController { //基类private $request;function __construct (){ $request = \woo\base\RequestRegistry::getRequest(); //通过注册表类获取一个处理用户请求信息的类if(is_null($request)){$request = new Request();
}$this->request = $request;
} abstract function process(); function forward($resource){ //跳转include($resource);exit(0);
} function getRequest(){return $this->request;
}
}class AddVenueController extends PageController { //这个类的作用就是向数据库写入一个venue数据(数据表结构类似:id,name) function process(){try{$request = $this->getRequest();$name = $request->getProperty('venue_name'); //获取用户提交的venue的名称if(is_null($request->getProperty('submitted'))){ //判断是否表单提交,否的话跳转到add_nenue.php$request->addFeedback("choose a name for the venue"); $this->forward('add_nenue.php');
} else if (is_null($name)){ //判断表单提交是否有name $request->addFeedback("name is a required field"); $this->forward('add_venue.php'); //跳转add_venue.php } $venue = new \woo\domain\Venue(null,$name); //创建对象便可将它添加到数据库,具体内部的业务逻辑不必深究。$this->forward("ListVenues.php"); //添加成功后跳转ListVenues.php,即一个列表数据的显示界面 } catch(Exception $e){$this->forward('error.php'); //跳转到一个错误界面 }
}
}$controller = new AddVenueController(); //执行这个类的process()方法$controller->process();?>
<?php
//视图文件 (文件名add_venue.php)require_once("woo/base/RequestRegistry.php");$request = \woo\base\RequestRegistry::getRequest();?>
<html>
<head>
<title>Add Venue</title>
</head>
<body>
<h1>Add Venue</h1>
<table>
<tr>
<td>
<?php print $request->getFeedbackString('</td></tr><tr><td>')?>
</td>
</tr>
</table>
<form action="AddVenue.php" method="get">
<input type="hidden" name="submitted" value="yes" />
<input type="text" name="venue_name" />
</form>
</body>
</html>
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