Answers for "laravel user_id after username"

get id user login laravel

use Auth;
$user_id = Auth::user()->id;

laravel 6 use username instead of id

// using User->username instead of id on url:
public function show($user)
    {
  		// where<YourAtributeName>($param)->firstOrFail()
        $user = User::whereUsername($user)->firstOrFail();
        return view('users.show', ['user'=>$user]);
    }