Symfony Localized Routes - Optional Locale - symfony

Question

I'd like the following urls to serve the appropriate actions:
/ - indexAction
/fr - indexAction
/foo - detailsAction (slug = foo)
/fr/foo - detailsAction (slug = foo)
I have added the following action methods:
/**
* #Route("/{_locale}", name="home", defaults={"_locale": ""}, requirements={"_locale": "fr|es"})
*/
public function indexAction() {
...
}
/**
* #Route("/{_locale}/{slug}", name="details", defaults={"_locale": ""}, requirements={"_locale": "fr|es"})
*/
public function detailsAction($slug) {
...
}
This works fine if I go to /, /fr and /fr/foo. However when I go to /foo it doesn't find a matching route. I'd appreciate it if someone could show me how to this.
Please note that ideally i'd like to achieve this without having to add multiple #Route annotations for a particular action method. That way I can use the UrlGenerator and point to the same name to produce the localized and none localized route whether I pass the _locale parameter or not.

Answer 1

I have managed to get this to work although my solution is slightly hacky. First I removed {_locale} part of the path, the defaults and requirements from my routes above.
Then when I created my routes I said:
$routes = new RouteCollection();
// Load the routes
...
$routes->addPrefix('/{_locale}', ['_locale' => ''], ['_locale' => '|fr|es']);
This automatically adds the localization bits (removed above) to the routes so it can easily be configured in one place. I changed RouteCollection to my own type with the following:
use Symfony\Component\Routing\RouteCollection as BaseRouteCollection;
class RouteCollection extends BaseRouteCollection {
public function addPrefix($prefix, array $defaults = [], array $requirements = []) {
foreach ($this->all() as $route) {
$route->setPath($prefix . rtrim($route->getPath(), '/'));
$route->addDefaults($defaults);
$route->addRequirements($requirements);
}
}
}
This makes sure the localized home page route doesn't end with a forward slash e.g. /fr/.
Finally I had to override the Route class with the following:
use ReflectionProperty;
use Symfony\Component\Routing\Route as BaseRoute;
class Route extends BaseRoute {
public function compile() {
// Call the parent method to get the compiled route
$compiledRoute = parent::compile();
// Override the regex property
$property = new ReflectionProperty($compiledRoute, 'regex');
$property->setAccessible(true);
$property->setValue($compiledRoute, str_replace('^/', '^/?', $compiledRoute->getRegex()));
return $compiledRoute;
}
}
This is particularly hacky but does save you from having to add a heap more code. All it does is replace the regular expression so that the first forward slash is optional which allows the /foo url to work. Note: You will have to make sure your RouteCollection is a collection of this class and not the Symfony Route class.
Hope this helps.