Symfony redirect all routes matching a host - symfony

Question

I have a single Symfony website which has 2 domains:
landing (www.landing.com)
main domain (www.main.com
I should configure it so that every request which matches the landing host (www.landing.com) redirects to the homepage. Requests on the main domain should work as usual.
Is it possible? I tried with this but it redirects only the homepage:
/**
* #Route("/", name="landing", host="www.landing.com")
*/
public function landingAction()
{
return $this->render('default/landing.html.twig');
}
/**
* #Route("/", name="homepage")
*/
public function indexAction(Request $request)
{
return $this->render('default/index.html.twig');
}

Answer 1

I ended up using a listener and check the host of the current page. This way I can even parameterize the host.
This is the complete code:
<?php
namespace AppBundle\EventListener;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
class LandingListener
{
private $landingPageHost;
private $router;
public function __construct($landingPageHost, $router)
{
$this->landingPageHost = $landingPageHost;
$this->router = $router;
}
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$host = $request->getHost();
$isHomepage = 'homepage' == $request->attributes->get('_route');
// landing page domain
if (false !== stripos($host, $this->landingPageHost) && !$isHomepage) {
$url = $this->router->generate('homepage');
$response = new RedirectResponse($url);
$event->setResponse($response);
}
}
}
This is the service:
app.landing_listener:
class: AppBundle\EventListener\LandingListener
arguments: ['%landing_page_host%', '#router']
tags:
- { name: kernel.event_listener, event: kernel.request }

Answer 2

You could forward the request of www.landing.com to homepage route.
Tested in Symfony 3.3
Though not very common, you can also forward to another controller internally with the forward() method. Instead of redirecting the user's browser, this makes an "internal" sub-request and calls the defined controller.
The forward() method returns the Response object that is returned from that controller, just change the host with theirs:
/**
* #Route("/", name="landing", host="localhost")
*/
public function landingAction()
{
// return $this->render('default/landing.html.twig');
$response = $this->forward('AppBundle:Default:index');
//further modify the response or return it directly
return $response;
}
/**
* #Route("/", name="homepage")
*/
public function indexAction(Request $request)
{
return $this->render('default/index.html.twig');
}
Even , you can pass arguments to the resulting controller:
$response = $this->forward('AppBundle:Something:fancy', array(
'name' => $name,
'color' => 'green',
))
Reference: https://symfony.com/doc/3.3/controller/forwarding.html