function post()
 {
     $sound_id = $this->app->request->post('sound_id');
     if ($this->tap != self::ONE_TAP && $this->tap != self::TWO_TAP && $this->tap != self::LONG_TAP) {
         //タップの種類が想定以外のものの場合は400を返す
         $this->app->response->setStatus(400);
         return;
     }
     if (empty($sound_id)) {
         $this->app->response->setStatus(400);
     }
     $model = new BeaconModel();
     $model->updateBeacon($this->id, $this->tap . "_sound", $sound_id);
     echo '{"status": 0}';
 }