public function servicedurationAction()
 {
     $request = $this->getRequest();
     $request->getPost('id') != '' ? $user_id = $request->getPost('id') : ($user_id = '');
     $request->getPost('service_id') != '' ? $service_id = $request->getPost('service_id') : ($service_id = '');
     if (!empty($user_id) && $user_id != null && $service_id != '') {
         $model = new Practitioners();
         $api_url = $this->getServiceLocator()->get('config')['api_url']['value'];
         echo json_encode($model->getServiceDurations($api_url, $service_id, $user_id));
     } else {
         echo json_encode(array('status' => 0, 'msg' => 'Unable to get service duration for the selected service..!!'));
     }
     exit;
 }