RequiredWith not working as expected

[scippio]

✏️ Describe the bug
I think there is a bad behaviour with RequiredWith attribute.

↪️ To Reproduce¨

it('cannot validate MyData', function () {
    class MyData extends Data
    {
        public function __construct(
            public string $name,
            #[Unique(User::class, 'email')]
            public string $email,
            #[RequiredWith('street')]
            public string|Optional $city,
            #[RequiredWith('city')]
            public string|Optional $street
        ) {
        }
    }

    // Validation exception is not thrown (off course it is but for documentation purposes it is not)
    dd(MyData::validateAndCreate([
           'name' => 'Ruben',
           'email' => '[email protected]',
           'street' => 'MyStreet'
     ]));
});

✅ Expected behavior
I think there should be validate error like: "The city field is required when street is present.", but the request is accepted. The "rules" function with "required_with" works as expected.

    public static function rules(): array
    {
        return [
            'email' => ...,
            'city' => ['required_with:street'],
            'street' => ['required_with:city'],
        ];
    }

🖥️ Versions

Laravel: 11
Laravel Data: 4.6.0
PHP: 8.3.6

[scippio]

I think it's same as #844

[bryanlopezinc]

@scippio i feel the combination of the sometimes (in this case Optional) and required_with rules creates a conflict.

[scippio]

Yes.

[bryanlopezinc]

@scippio What I meant to say is your data class validation doesn't work because of the Optional type for both properties which translates to "sometimes". notice how the rules method work.

[scippio]

So it's a laravel-data bug? Because Laravel works as expected.