How do you implement Custom validation rules in Laravel?

php artisan make:rule Uppercase

class Uppercase implements Rule {
    public function passes($attribute, $value) {
        return strtoupper($value) === $value;
    }
    
    public function message() {
        return "The :attribute must be uppercase.";
    }
}

use AppRulesUppercase;

public function store(Request $request) {
    $request->validate([
        "name" => ["required", new Uppercase],
        "email" => "required|email",
    ]);
}

$request->validate([
    "name" => [
        "required",
        function ($attribute, $value, $fail) {
            if (strtoupper($value) !== $value) {
                $fail("The $attribute must be uppercase.");
            }
        },
    ],
]);