Enum: Transform to uppercase before validation

[ahoiroman]

Hi there,

I got this enum

enum Location: string
{
    case GOE = 'GOE';
    case HAN = 'HAN';
}

Now I got a data class like this:

final class LocationData extends Data
{
    public function __construct(
        public readonly int $id,
        public readonly Location $name,
    ) {}
}

Now I want to make sure that Location is validated correctly (works), but also to ensure that a given value like han will be transformed to uppercase before validation. This does not work with a transformer.

Is there any chance I can do that? I cannot simply touch the enum itself (unfortunately).