Can date time validators be used with FormBuilderDateTimePicker from flutter_form_builder?

[michaelowolf]

Hi,

I'm trying to use form_builder_validators in combination with flutter_form_builder. I'm not sure which library is more appropriate to ask this in.

I'd like to use the date time validators with the FormBuilderDateTimePicker, which produces a value as a DateTime instance (as far as I understand), and expects validators of type FormFieldValidator<DateTime>. However, all the date time validators expect String values, and so are of type FormFieldValidator<String> and incompatible.

Are these validators expected to be used with the date time picker and, if so, how? I'm sure I'm missing something obvious!

I did notice that there's a value transformer validator, but this seems to expect the return type to match the input type, so doesn't look useful in this case.