public function render() { $dcr = new Decorator(); return json_encode(['temperature-value' => $dcr->decorateTemperature($this->model->temperatura), 'humidity-value' => $dcr->decorateUmidity($this->model->umidita), 'last-update' => $dcr->decorateDateTime($this->model->ultimo_aggiornamento)], JSON_FORCE_OBJECT | JSON_HEX_QUOT | JSON_HEX_TAG); }