There is a route with parameters, you need to make a redirect if there are no parameters, how?

Question

Laravel

Hello everyone
Such a question is a route

Route::get('portfolio/cat/{alias?}',['uses' => 'Portfolio\[email protected]', 'as'=>'portfolioCat'])

How to make a redirect if there is no alias parameter without using a controller? Interested in whether there is a standard functionality of the framework that allows this.

Answer 1

Make a check and register a redirect directly in the route. And for good to make middleware

Answer 2

Route::redirect()

Answer 3

In the controller method, write the following:
if ($request->route("alias") === null) {
return redirect()->route("route name");
}