/**
  * Search request for existing patient is handled over here
  */
 public function searchAction()
 {
     $tag = $this->_request->getParam('tag', 0);
     $pat_obj = new Application_Model_Patient();
     $result = $pat_obj->search($tag);
     header('Content-type: application/json');
     echo json_encode($result);
     die;
 }