Prado\Web\Services\TJsonService::createJsonResponse PHP Метод

    protected function createJsonResponse($service, $properties, $config)
    {
        // init service properties
        foreach ($properties as $name => $value) {
            $service->setSubproperty($name, $value);
        }
        $service->init($config);
        //send content if not null
        if (($content = $service->getJsonContent()) !== null) {
            $response = $this->getResponse();
            $response->setContentType('application/json');
            $response->setCharset('UTF-8');
            //send content
            $response->write(TJavaScript::jsonEncode($content));
        }
    }