date static method

FormFieldValidator<String> date(
  1. String errorMessage
) 
Validatorless.date('invalid date')

Implementation

static FormFieldValidator<String> date(String errorMessage) {
  return (value) {
    final date = DateTime.tryParse(value ?? '');
    if (date == null) {
      return errorMessage;
    }
    return null;
  };
}