CakePHP中render,redirect,dispatch 的差別
Jun 13, 2016 pm 12:33 PM
CakePHP中render,redirect,dispatch 的區(qū)別
http://blog.csdn.net/kunshan_shenbin/article/details/6221219
在CakePHP,跳轉(zhuǎn)經(jīng)常用的三個函數(shù),render,redirect,dispatch
1、render函數(shù)
public function render($action = null, $layout = null, $file = null)
render
??? string $action
??? string $layout
??? string $file
render渲染視圖,你也許不會經(jīng)常使用這個方法,因為render方法是在controller action結(jié)束時自動被調(diào)用的,輸出按action名字命令的view。同時,你也可以在controller邏輯里的任意位置調(diào)用來這個方法輸出視圖;如果在Controller中邏輯調(diào)用的時候,如果要求跳轉(zhuǎn)當(dāng)前Controller中的其他頁面可以這樣使用,例如:
在delete函數(shù)中刪除成功后,跳轉(zhuǎn)到列表頁面index。可以這樣寫
public function delete(){
?? $this->index();
?? $this->render(null, null, 'index');
}
2、redirect函數(shù)
redirect
??? string $url
用戶重定向,通過此方法告訴你的用戶應(yīng)該繼續(xù)訪問什么地方。這里傳入的URL參數(shù)可以是一個Cake內(nèi)部URL,也可以是一個完整的URL(http://...)。此方法是把url發(fā)送的瀏覽,然后重新請求。
3、dispatch函數(shù)
dispatch函數(shù)是在Dispatcher類中,他有
$Dispatcher->dispatch($url);
在這里調(diào)度器會解析url得到相關(guān)的參數(shù)(其中會調(diào)用到比較多的動作包括route來解析這個url)轉(zhuǎn)發(fā)到對應(yīng)的控制器,最后將控制權(quán)轉(zhuǎn)交給相關(guān)的控制器中的方法。這個方法主要是跳轉(zhuǎn)到其他Controller中,同一個Controller跳轉(zhuǎn)用render。
注意:用dispatch跳轉(zhuǎn)的時候再結(jié)束的時候要調(diào)用exit;
App::import('Core', array('Dispatcher')); ...... $dispatcher = new Dispatcher(); $dispatcher->dispatch($this->request,$this->response,array("controller"=>"admins","action"=>"site")); exit();

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