我知道這是舊的,但將本地化消息放入元數據中是爲了DataAnnotationsModelValidator的子類,並覆蓋GetClientValidationRules和Validate以提供您自己的消息。
您使用DataAnnotationsModelValidatorProvider.RegisterAdapterFactory註冊適配器。
我構建了一個包裝工廠構建器來創建工廠代理。 out參數在這裏,因爲我在循環中使用它,因爲我通過反射發現程序集中的所有適配器,所以我需要獲取每個適配器的屬性類型以調用RegisterAdpaterFactory。我可以內聯註冊,但我使用適配器做其他的東西在這之後/屬性信息
public static class ModelValidationFactory
{
/// <summary>
/// Builds a Lamda expression with the Func<ModelMetadata, ControllerContext, ValidationAttribute, ModelValidator> signature
/// to instantiate a strongly typed constructor. This used by the <see cref="DataAnnotationsModelValidatorProvider.RegisterAdapterFactory"/>
/// and used (ultimately) by <see cref="ModelValidatorProviderCollection.GetValidators"/>
/// </summary>
/// <param name="adapterType">Adapter type, expecting subclass of <see cref="ValidatorResourceAdapterBase{TAttribute}"/> where T is one of the <see cref="ValidationAttribute"/> attributes</param>
/// <param name="attrType">The <see cref="ValidationAttribute"/> generic argument for the adapter</param>
/// <returns>The constructor invoker for the adapter. <see cref="DataAnnotationsModelValidationFactory"/></returns>
public static DataAnnotationsModelValidationFactory BuildFactory(Type adapterType, out Type attrType)
{
attrType = adapterType.BaseType.GetGenericArguments()[0];
ConstructorInfo ctor = adapterType.GetConstructor(new[] { typeof(ModelMetadata), typeof(ControllerContext), attrType });
ParameterInfo[] paramsInfo = ctor.GetParameters();
ParameterExpression modelMetadataParam = Expression.Parameter(typeof(ModelMetadata), "metadata");
ParameterExpression contextParam = Expression.Parameter(typeof(ControllerContext), "context");
ParameterExpression attributeParam = Expression.Parameter(typeof(ValidationAttribute), "attribute");
Expression[] ctorCallArgs = new Expression[]
{
modelMetadataParam,
contextParam,
Expression.TypeAs(attributeParam, attrType)
};
NewExpression ctorInvoker = Expression.New(ctor, ctorCallArgs);
// (ModelMetadata metadata, ControllerContext context, ValidationAttribute attribute) => new {AdapterType}(metadata, context, ({AttrType})attribute)
return Expression
.Lambda(typeof(DataAnnotationsModelValidationFactory), ctorInvoker, modelMetadataParam, contextParam, attributeParam)
.Compile()
as DataAnnotationsModelValidationFactory;
}
}
這也適用於MVC3,我覺得MVC2爲好。
你是說這在MVC2/3中工作,並在v4預覽中被打破? – RickAndMSFT