MVC 多语言记录1 设置默认的ResourceType

http://stackoverflow.com/questions/3260748/default-resource-for-data-annotations-in-asp-net-mvc

Add this class somewhere in your project:

 public class ExternalResourceDataAnnotationsValidator : DataAnnotationsModelValidator<ValidationAttribute>

{

    /// <summary>

    /// The type of the resource which holds the error messqages

    /// </summary>

    public static Type ResourceType { get; set; }

    /// <summary>

    /// Function to get the ErrorMessageResourceName from the Attribute

    /// </summary>

    public static Func<ValidationAttribute, string> ResourceNameFunc

    {

        get { return _resourceNameFunc; }

        set { _resourceNameFunc = value; }

    }

    private static Func<ValidationAttribute, string> _resourceNameFunc = attr => attr.GetType().Name;

    public ExternalResourceDataAnnotationsValidator(ModelMetadata metadata, ControllerContext context, ValidationAttribute attribute)

        : base(metadata, context, attribute)

    {

        if (Attribute.ErrorMessageResourceType == null)

        {

            this.Attribute.ErrorMessageResourceType = ResourceType;

        }

        if (Attribute.ErrorMessageResourceName == null)

        {

            this.Attribute.ErrorMessageResourceName = ResourceNameFunc(this.Attribute);

        }

    }

}

and in your global.asax, add the following:

// Add once

ExternalResourceDataAnnotationsValidator.ResourceType = typeof(CustomDataAnnotationsResources);

// Add one line for every attribute you want their ErrorMessageResourceType replaced.

DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RangeAttribute), typeof(ExternalResourceDataAnnotationsValidator));

It will look for a property with the same name as the validator type for the error message. You can change that via the ResourceNameFunc property.

EDIT: AFAIK this works from MVC2 onwards, as DataAnnotationsModelValidatorProvider was introduced in MVC2.

To achieve this, I created a new class that inherits from RequiredAttribute, and the error message is embedded inside this new class:

The error message is taken from the ValidationResource.resx file, where I list the error message as follows:

public class RequiredWithMessageAttribute : RequiredAttribute

{

    public RequiredWithMessageAttribute()

    {

        ErrorMessageResourceType = typeof(ValidationResource);

        ErrorMessageResourceName = "RequiredErrorMessage";

    }

}

RequiredErrorMessage --> "{0} is required."

where {0} = display name.

I then annotate my models like this, so I never have to repeat my error message declarations:

[RequiredWithMessage]

public string Name { get; set; }

Once you do this, an error message ("Name is required.") will appear whenever validation fails.

This works properly with ASP.NET MVC's server-side validation and client-side validation.

巴特西

MVC 多语言记录1 设置默认的ResourceType

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