Custom route bindings

Did you know you can define custom route bindings in Laravel?

In this example, I need to resolve a portfolio by slug. But the slug is not unique, because multiple users can have a portfolio named 'Foo'

So I define how Laravel should resolve them from a route parameter

 1class RouteServiceProvider extends ServiceProvider
 2{
 3    public const HOME = '/dashboard';
 4 
 5    public function boot()
 6    {
 7        Route::bind('portfolio', function (string $slug) {
 8            return Portfolio::query()
 9                ->whereBelongsto(request()->user())
10                ->whereSlug($slug)
11                ->firstOrFail();
12        });
13    }
14}

1Route::get('portfolios/{portfolio}', function (Portfolio $portfolio) {
2    /*
3     * The $portfolio will be the result of the query defined in the RouteServiceProvider
4     */
5})

Tip given by @mmartin_joo