是否可以在Symfony2中覆盖路由处理程序？

Question

Say a template application is created with Symfony2. It contains a product description page and the route is created/handled as following:

class ProductController extends Controller
{
    /**
     * @Route("/product/{id}")
     */
    public function showDecription($id)
    {
        // ...
    }
}

Custom applications are created based on the template application. In other words, the template application provides 'a default value'.

Is it possible to override the route handler in a custom application without modifying the code of the template application? If the route needs to be declared in a different way in the template application in order to be overridable, that's ok. How should one proceed in this case?

Answer 1

The main routing file is app/config/routing.yml . I suggest you to create 2 more files: app/config/routing_default.yml and app/config/routing_override.yml and then edit your app/config/routing.yml as

override:
  resource: routing_override.yml
default:
  resource: routing_default.yml

Now in routing default you can add all default applications routes. And in override one - all additional ones.

Also route names in override and default should not be the same. If you want to override route by name you should change the order of includes.

Answer 2

Symfony guide has the following information on overriding a route:

Routing

Routing is never automatically imported in Symfony. If you want to include the routes from any bundle, then they must be manually imported from somewhere in your application (eg app/config/routing.yml).

The easiest way to "override" a bundle's routing is to never import it at all. Instead of importing a third-party bundle's routing, simply copy that routing file into your application, modify it, and import it instead.