/**
  * Summary.
  *
  * This function is called internally in the plugin, searchs of an "id" in the _POST array
  * and deletes any referral with that id.
  *
  * @return type Returns a JSON with the reslt of the operation.
  */
 public function delete_geeks_referrals()
 {
     header('Content-Type: application/json');
     try {
         $this->model->delete_referral($_POST['id']);
         echo Response::wrapResult("ok");
     } catch (Exeption $e) {
         echo Response::wrapFault($e->getMessage());
     }
     exit;
 }