(PR: #19590)

Hi everyone,

I'm thinking about some use cases with the MapRequestPayload feature.

Is it possible to precise in the documentation if classes must have "built-in types" fields or not? (Like int, string, null ...)
Because I don't think that it's recommanded to use Enum directly in the class because user input (when sending payload) only contains built-in types.

For example, if using own Enum classes in the MapRequestPayload classes, if value does not match. Violations will expose the app's implementation.

enum MyEnum: string
{
    case YES: 'yes';
    case NO: 'no';
}

class MyMap
{
    public string $attribute1;
    public MyEnum $attribute2;
}

class MyController
{
    public function __invoke(#[MapRequestPayload] MyMap $input): Reponse
    {
        return ...;
    }
}

With the given example, if I receive :

{"attribute1":"hello", "attribute2": "wrong"}

I will have an error in the violations exposing my internal implementation App\...\MyEnum. That's why I'm asking to precise in the documentation to use only built-in types.

(The error comes from the denormalization because the value entered does not match any existing value in the enum)