vGreaterThan<T> function

DraftModeValidator<T> vGreaterThan<T>(dynamic compare)

Returns a validator that requires values to be greater than compare.

The compare argument may be a literal value, another attribute readable from the validation context, or a callback that resolves the comparison lazily.

Implementation

DraftModeValidator<T> vGreaterThan<T>(dynamic compare) {
  return _typedValidator<T>(
    type: DraftModeValidatorType.greaterThan,
    payload: compare,
    delegate: (DraftModeValidationValueContext? context, T? value) {
      final compareValue =
          compare is Function ? compare() : context?.read(compare) ?? compare;
      if (value == null || compareValue == null) {
        return null;
      }

      if (value is DateTime && compareValue is DateTime) {
        if (!value.isAfter(compareValue)) {
          return DraftModeValidationGreaterThan(compareValue);
        }
      }

      if (value is num && compareValue is num) {
        if (value <= compareValue) {
          return DraftModeValidationGreaterThan(compareValue);
        }
      }

      return null;
    },
  );
}