I've developed a controller for answering to AJAX petitions using JSON:

class PeopleController extends Controller
{
public function listAction()
{
    $request = $this->getRequest();

    // if ajax only is going to be used uncomment next lines
    //if (!$request->isXmlHttpRequest())
    //throw $this->createNotFoundException('The page is not found');

    $repository = $this->getDoctrine()->getRepository('PeopleManagerBundle:People');
    $items = $repository->findAll();

    // yes, here we are retrieving "_format" from routing. In our case it's json
    $format = $request->getRequestFormat();

    return $this->render('::base.'.$format.'.twig', array('data' => $items));

}

I've enabled the HTML view, as it is very useful for debugging, but I'd like to limit the possibility of calling this controller with _format=html while the app is in production. How can I determine if a controller is called from a development environment or from a production environment?

php symfony
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