IsString function

ValidationRule IsString({
  1. String? message,
})

ValidationRule for isString validator.

Implementation

ValidationRule IsString({String? message}) => ValidationRule(
    message: message,
    constraints: [],
    validate: (value, arguments) => Future(() => isString(value)),
    defaultMessage: (arguments) {
      String property = arguments.property;
      return '"$property" must be a valid string';
    });