Check routing in symfony2

Question

I want to learn symfony and I start to create a small application. I have a question related to the routes. So, I have in my project the routes :

/admin/homepage , /admin/news , admin/galery

No if I write in url /admin , this route doesn't exist and I get as error No route found for "GET /admin/" . Exist a way to check if route doesn't exist and redirect to another route for example ? Thx in advance and sorry for my english My routes :

news_all:
path: /news/all/{page}
defaults: { _controller: AppAdminBundle:News:all, page: 1 }
requirements:
    page: \d+
    _method:  GET|POST
news_add:
path: /news/add
defaults: { _controller: AppAdminBundle:News:add }

Answer 1

In your case the best solution would be to override default ExceptionController and add custom logic there, eg redirection to other page - according to the docs: http://symfony.com/doc/current/cookbook/controller/error_pages.html#overriding-the-default-exceptioncontroller

# app/config/config.yml
twig:
    exception_controller:  AppBundle:Exception:showException

Note: Instead of creating a new exception controller from scratch you can, of course, also extend the default ExceptionController . In that case, you might want to override one or both of the showAction() and findTemplate() methods. The latter one locates the template to be used.

Answer 2

Symfony's good practise are to set rout in your controller, using annotations

use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;

and

/**
* @Route("/news/add", name="news_add")
*/
public function addAction()
{
    // ...
}

Also, with annotation, you can set rout for a whole controller. Which is, in your case, what you're looking for.

/**
* @Route("/admin")
*/
class NewsController extends Controller
{
    /**
     * @Route("/news/add", name="news_add")
     */
    public function addAction()
    {
        // ...
    }
}

Also, I advice you to take a look at @Template annotation .

Else, to answer your question, I think you can make a custom twig function (check this link for more information). Function that checks is the given name a valid route:

function routeExists($name)
{
    // I assume that you have a link to the container in your twig extension class
    $router = $this->container->get('router');
    return (null === $router->getRouteCollection()->get($name)) ? false : true;
}