Using "required_if" validation rule with an enum value

[Bosphoramus]

Is there a more elegant way to do this?

'iban' => ['required_if:payment_method:'.PaymentMethod::DebitReceipt->value]

I want to use the required_if validation rule to check if another field in the request is equal to a value contained in an enum.

My code right now:

'payment_method' => ['required', new Enum(PaymentMethod::class)],
'iban' => ['required_if:payment_method:'.PaymentMethod::DebitReceipt->value],

I have categorised this as a Q&A because I do not know if there is already a better (more Laravel-like) way to do this, if not it could be categorised as a feature idea.

Thank you!

[roelvanhintum]

For future reference, required_if doesn't support enums. This would work as follows (in my case in a GraphQL mutation):

'rules' => fn (array $args) => [
    Rule::requiredIf(function () use ($args) {
        return $args['payment_method'] === PaymentMethod::DebitReceipt;
    }),
],