Routing

Question 1

What are ways to configure routes?

Answer 1

Yaml, XML, PHP (with attributes)

Question 2

Which routes does symfony load in case multiple classes are placed in one file?

Answer 2

Only loads routes for the first class, ignoring all other routes

Question 3

How can parameter requirements be set directly at the param in the route definition?

Answer 3

With the inline syntax:

#[Route('/blog/{page<\d+>}', name: 'blog_list')]

Question 4

If multiple routes would match, how can we control which of these routes will be used?

Answer 4

By setting priorities on the route:

    #[Route('/blog/list', name: 'blog_list', priority: 2)]
    public function list(): Response
    {
        // ...
    }

Question 5

How can you get Request-Data inside services?

Answer 5

Inject the RequestStack-Service

use Symfony\Component\HttpFoundation\RequestStack;

Question 6

How can you get Request-Data inside a twig file?

Answer 6

E.g.

app.current_route

or for parameters

app.current_route_parameters

Question 7

How can symfony routing handle different hosts / subdomains?
E.g. m.example.com/blog AND example.com/blog

Answer 7

With a “host”-parameter

    #[Route(
        '/',
        name: 'mobile_homepage',
        host: '{subdomain}.example.com',
        defaults: ['subdomain' => 'm'],
        requirements: ['subdomain' => 'm|mobile'],
    )]
    public function mobileHomepage(): Response
    {
        // ...
    }

Question 8

Which special controller parameters are there from symfony?

Answer 8

_locale, _fragment, _format, _controller