javascript - $this->request->is ('ajax' ) 始终为 false

Question

我的 View 中有代码，但是通过 ajax 发送到我的 Controller 操作(如 add.ctp 的最后一部分所示)

//add.ctp
 <?php
  echo $this->Form->create('Poll',array('action' => 'index'));
  echo $this->Form->input('one', array('id'=>'name'));
  echo $this->Form->input('two', array('id'=>'email'));
  echo $this->Form->input('three', array('id'=>'message'));
  echo $this->Form->input('four', array('id'=>'four'));


 echo $this->Js->submit('Send', array('id' => 'btn'), array(
 'before'=>$this->Js->get('#sending')->effect('fadeIn'),
 'success'=>$this->Js->get('#sending')->effect('fadeOut'),
 'update'=>'#success'
  )); 
  echo $this->Form->end();
  ?>

<div id="sending" style="display: none; background-color: lightgreen;">Sending...</div>
<script>



 $('#btn').click(function(event) {

 form = $("#PollIndexForm").serialize();

  // console.log(form);
 $.ajax({
   type: "POST",
   url: 'pollsController/index';,
   data: form,

   success: function(data){
      //
   }

 });

 event.preventDefault();
// return false;  //stop the actual form post !important!

});

</script>

在到达我的 Controller 时，我做了一个 isAjax 请求测试，如果失败了

public $components = array('RequestHandler');

public function index(){ 
$this->autoRender = false;

      if($this->RequestHandler->isAjax()){
    echo debug('Ajax call');

       }
     if(!empty($this->data)){
       echo debug('not empty');
      }
}

每次我尝试运行它时我都得到“不为空”并且 $this->request->is('ajax') 总是错误的 我的 cakephp 版本是 2.3，我已经尝试过 $this->request->is('ajax') 等等。 如果有人能指出我遗漏了什么，我将不胜感激

Answer 1

在你的代码中，你有

if($this->RequestHandler->isAjax()){

尝试以这种方式制作条件:

if ($this->request->is('ajax')) {

}

http://book.cakephp.org/2.0/en/appendices/2-0-migration-guide.html?highlight=isajax#requesthandlercomponent

RequestHandlerComponent: Many of RequestHandlerComponent’s methods are just proxies for CakeRequest methods. The following methods have been deprecated and will be removed in future versions: isSsl() isAjax() isPost() isPut() isFlash() isDelete() getReferer()getClientIp()