check method

@mustCallSuper Future<bool> check()

Validates the field asynchronously and updates the exception state.

It first performs synchronous validation using super.check. If that passes, it proceeds to asynchronous validation by calling AsyncField.asyncValidator.

Returns a Future that completes with true if the field is valid after validation, or false if it is invalid.

Example

final isValid = await field.check();
if (isValid) {
  // Proceed with valid data
} else {
  // Handle validation errors
}

Implementation

@mustCallSuper
Future<bool> check() async {
  switch (validator(value)) {
    case null:
      _exception = null;
    case FFormException exception:
      if (exception.isValid) {
        _exception = null;
      } else if (exception case E? e) {
        _exception = e;
      }
    case E exception:
      _exception = exception;
  }

  notifyListeners();
  return isValid;
}