required method

EzValidator<T> required([
  1. String? message
])

add a validation to check if the value is null or empty message is the message to return if the validation fails

Implementation

EzValidator<T> required([String? message]) => addValidation(
      (v, [_]) => v == null || v.isNullOrEmpty
          ? message ?? EzValidator.globalLocale.required(label)
          : null,
    );