passes method

@override FutureOr<bool> passes(ValidationContext context)

Validates the value using the given context.

Returns true if valid, otherwise false.

Implementation

@override
FutureOr<bool> passes(ValidationContext context) {
  final value = context.value;
  if (value == null) return false;

  final acceptedValues = ['yes', 'on', '1', 1, true, 'true'];
  if (value is String) {
    return acceptedValues.contains(value.toLowerCase());
  }
  return acceptedValues.contains(value);
}