无法获取网址参数

Question

I have used ajax url with one parameter month which i selected from option box

  $.ajax({
    url: baseUri + 'attendancelist/search/attsearch/month/' + month ,
    type: 'GET'
    ...
        });

So i want to call that parameter in my attsearchAction() So i code like this

public function attsearchAction() {        
    $month = $this->request->get('month');  //current testing framework is phalcon
    //$month = $this->_request->getParam('month'); //zend framework is ok by getParam
    var_dump($month);exit;     //null
   }

But it only show null? How to fix that>>