CODEWITHSUNDEEP
c#asp.net-mvcresourcesdata-annotations
Kostya Sydoruk
Kostya Sydoruk

Reputation: 144

MVC3 Localized display name attribute by property name

I have recently learned how to create a localized display names for my model's properties using the following article: Simplified localization for DataAnnotations

And I am now trying to push it a bit further by removing the parameters from the constructor. Meaning instead of having this

public class User
{
    [Required]
    [LocalizedDisplayNameAttribute("User_Id")]
    public int Id { get; set; }

    [Required]
    [StringLength(40)]
    [LocalizedDisplayNameAttribute("User_FirstName")]
    public string FirstName { get; set; }

    [Required]
    [StringLength(40)]
    [LocalizedDisplayNameAttribute("User_LastName")]
    public string LastName { get; set; }
}

I want to have this

public class User
{
    [Required]
    [LocalizedDisplayNameAttribute]
    public int Id { get; set; }

    [Required]
    [StringLength(40)]
    [LocalizedDisplayNameAttribute]
    public string FirstName { get; set; }

    [Required]
    [StringLength(40)]
    [LocalizedDisplayNameAttribute]
    public string LastName { get; set; }
}

Now the question is how do I let this class:

public class LocalizedDisplayNameAttribute : DisplayNameAttribute
{
    private PropertyInfo _nameProperty;
    private Type _resourceType;

    public LocalizedDisplayNameAttribute(string className, string propertyName)
        : base(className + (propertyName == null ? "_Class" : ("_" + propertyName)))
    {

    }

    public override string DisplayName
    {
        get
        {
            return LanguageService.Instance.Translate(base.DisplayName) ?? "**" + base.DisplayName + "**";
        }
    }
}

Know my property's name without having to specify it in the constructor.

Upvotes: 4

Views: 3947

Answers (2)

NoWar
NoWar

Reputation: 37642

It works fine for me.

[DataType(DataType.EmailAddress, ErrorMessageResourceName = "ThisFieldIsRequired", ErrorMessageResourceType = typeof(Resource))]
        [Required(ErrorMessageResourceName = "ThisFieldIsRequired", ErrorMessageResourceType = typeof(Resource))]
        [RegularExpression(@"^[\w-]+(\.[\w-]+)*@([a-z0-9-]+(\.[a-z0-9-]+)*?\.[a-z]{2,6}|(\d{1,3}\.){3}\d{1,3})(:\d{4})?$", ErrorMessageResourceName = "ThisFieldIsRequired", ErrorMessageResourceType = typeof(Resource))]
        [Display(Name = "EmailID", ResourceType = typeof(Resource))]
        public string EmailID { get; set; }

Upvotes: 2

David Espino
David Espino

Reputation: 2187

I'm not sure if this applies to your case, but I'm using Model Meta data extensions for localizing my models. It keeps the model cleaner. Have you tried these?

http://haacked.com/archive/2011/07/14/model-metadata-and-validation-localization-using-conventions.aspx

Upvotes: 0

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