public IEnumerable <RuleDescription> GetNestedRules(string propertyName, PropertyRule rule, ChildValidatorAdaptor childValidator, IRuleBuilder ruleBuilder)
{
//HACK: I hate this explicit defintion.
var coreDocumentationType = typeof(DocBuilder);
const string methodIdentifier = "Document";
var getRulesMethodDefinition = coreDocumentationType.ExtractMethodInfo(new[] { methodIdentifier })[methodIdentifier];
// Create the generic method instance of Document()
getRulesMethodDefinition = getRulesMethodDefinition.MakeGenericMethod(childValidator.ValidatorType.GetTypeInfo().BaseType.GenericTypeArguments[0]);
//Parameter 1 = Validator instance derived from AbstractValidator<T>, Parameter 2 = boolean (documentNested)
var parameterArray = new object[]
{
childValidator.GetValidator(_fluentValidationHelper.BuildPropertyValidatorContext(rule, propertyName)),
true
};
//Invoke extension method with validator instance
var documentationInstance = Activator.CreateInstance(coreDocumentationType, ruleBuilder);
var nestedRules = getRulesMethodDefinition.Invoke(documentationInstance, parameterArray) as IEnumerable <RuleDescription>;
if (nestedRules == null)
{
yield return(null);
}
foreach (var deepDocumentRule in nestedRules)
{
yield return(deepDocumentRule);
}
}
public string GetErrorMessage(IPropertyValidator validator, PropertyRule rule, string propertyName)
{
if (validator == null)
{
throw new ArgumentNullException(nameof(validator));
}
if (rule == null)
{
throw new ArgumentNullException(nameof(rule));
}
if (string.IsNullOrWhiteSpace(propertyName))
{
throw new ArgumentNullException(nameof(propertyName));
}
const string messagePreparationMethodIdentifier = "PrepareMessageFormatterForValidationError";
const string createValidationErrorMethodIdentifier = "CreateValidationError";
var validatorMethods = validator.GetType().ExtractMethodInfo(new[] { messagePreparationMethodIdentifier, createValidationErrorMethodIdentifier });
if (validatorMethods == null)
{
return(null);
}
//ValidatorContext is based on the type passed into the validator that is validated against, such as a 'Person' POCO
var validatorContext = _fluentValidationHelper.BuildPropertyValidatorContext(rule, propertyName);
//Force the validator to populate field parameter names that are used as part of the error response
validatorMethods[messagePreparationMethodIdentifier].Invoke(validator, new object[] { validatorContext });
//With the parameter names completed, build the error using the Validator instance
var validationFailure = validatorMethods[createValidationErrorMethodIdentifier].Invoke(validator, new object[] { validatorContext }) as ValidationFailure;
return(validationFailure?.ErrorMessage);
}
