cakephp传递选择值ajax

Question

我有两个选择按钮，并希望过滤记录，当用户选择任何选项时，我必须触发一个事件并将按钮的值传递给控制器的操作。我的代码如下所示

视图

<?php echo $this->Form->create('Employee'); ?>
   <fieldset>
      <div class="pure-control-group">
      <?php echo $this->Form->input('designation', array("label" => "Designation",'type' => 'select', 'id'=>'DesignationType','options' => $settings,'empty'   => 'select'));?>

      <?php echo $this->Form->input('district', array("label" => "District",'type' => 'select', 'id'=>'districtType','options' => $district,'empty'   => 'select'));?>
      </div>
  </fieldset>
<?php echo $this->Form->end(); 

   $this->Js->get('#DesignationType')->event('change',
    $this->Js->request(array(
        'controller'=>'employees',
        'action'=>'getByCategory'
        ), array(
        'update'=>'#success',
        'async' => true,
        'method' => 'post',
        'dataExpression'=>true,
        'data'=> $this->Js->serializeForm(array(
        'isForm' => true,
        'inline' => true
            ))
        ))
    );
    ?>
 <div id="success"></div>

控制器

public function getByCategory(){
      $design_id =$this->request->data['Employee']['designation'];
      $district_id =$this->request->data['Employee']['district'];         
      $this->layout = 'ajax';
}

当我单击“指定”时，我就可以得到指定的值，但不能得到地区.And的值，然后出现错误。

未定义索引:地区APP\Controller\EmployeesController.php，第18行

那么，如何才能得到区域的价值；

Answer 1

尝试在数据变量中发送form id。那是

试试这个：

$data = $this->Js->get('#YourFormId')->serializeForm(array('isForm' => true, 'inline' => true));    
$this->Js->get('#DesignationType')->event('change',
$this->Js->request(array(
   'controller'=>'employees',
   'action'=>'getByCategory'
   ), array(
   'update'=>'#success',
   'async' => true,
   'method' => 'post',
   'dataExpression'=>true,
   'data'=> $data
   ))

);