Laravel: How to use a parameter other than user id in a URL

I'm creating a Laravel web site where users can login and upload images. For visitors to see that user's gallery, I've set up a gallery page with a URL like https://localhost8000/gallery/2, where 2 is the user ID.

My current code looks like this.

web.php

Route::get('/menu/{user}', 'CartController@menu');

CartController.php

public function menu($user)
{
    $user = User::findOrFail($user);
    return view('new_menu')->with(['user' => $user]);
}

Instead of using the user ID as a route parameter, I want to use a random string. Currently a random string of 32 digits is created when the user registers and stored in the users table in a column called random.

I couldn't figure out how to relate "random" to "user" in web.php and Controller.

source https://stackoverflow.com/questions/70128106/laravel-how-to-use-a-parameter-other-than-user-id-in-a-url

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