redirectGuestsTo callback uses a route named 'login' explicitly causing redirect issues for applications with no such named route

[aalhoura]

Laravel Version

12.30.1

PHP Version

8.4.12

Database Driver & Version

No response

Description

In the ApplicationBuilder, on line 278, the application's global middleware is configured to redirect unauthenticated (guest) users to route('login'). This causes issues if the application does not have any such 'login' route defined.

Steps To Reproduce

If the 'auth' middleware is applied on a route, and the application has no route named 'login', any guests visiting this route will not be redirected correctly.

There are a few workarounds to this:

If using the 'auth' middleware, manually configure the redirect route in AppServiceProvider.php

use Illuminate\Auth\Middleware\Authenticate;

public function boot():  
{
     Authenticate::redirectUsing(fn () => route('custom.login'));
}

Or alternatively, add this to the body of the withMiddleware callback in \bootstrap\app.php

->withMiddleware(function (Middleware $middleware) {
        $middleware->redirectGuestsTo(fn () => route('custom.login'));
}

It would be nice if the implementation did not rely on the existence of a route named 'login'.