Remove Route Parameters in the Controller Action Method

Declaring multiple parameters in a Laravel Route, all this parameters must be included in the action method, even if some of this parameter are not used in the method.

For example, in this web routes:

Route::get('post/{slug}/{uuid}', PostController::class);

In the Controller only the uuid parameter is needed to fetch the Post, but the parameter slug must also be present.

class PostController
{
    public function __invoke(string $slug, string $uuid, Request $request)
    {
        $post = Post::where('uuid', $uuid)->findOrFail();

        //...
    }
}

Solution

The solution to skip requiring the slug parameter, is by using a middleware, in which we tell the request to just forget any parameter we want.

class RouteArgumentsFilter
{
    /**
     * Handle an incoming request.
     *
     * @param Closure(Request): (Response)  $next
     * @param string ...$parameters
     */
    public function handle(Request $request, Closure $next, string ...$parameters): Response
    {
        array_map(
            $request->route()->forgetParameter(...),
            $parameters
        );

        return $next($request);
    }
}

And the middleware, we specifiy to parameter to forget :slug

Route::get('post/{slug}/{uuid}', PostController::class)
    ->middleware(RouteArgumentsFilter::class . ':slug');

Now the Controller can be simplified:

class PostController
{
    public function __invoke(string $uuid, Request $request)
    {
        $post = Post::where('uuid', $uuid)->findOrFail();

        //...     
    }
}