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  • David Armitage 505 posts 2073 karma points
    Feb 28, 2022 @ 12:27
    David Armitage
    0

    Umbraco 9 - Dictionary Labels in DataAnnotation Attributes for form labels and validation messages

    Using Umbraco And Getting Started
    Umbraco 9

    Hi All,

    Has anyone figured out how to use dictionary labels in basic form models for DataAnnotation error messages etc.

    Eg.

    [DisplayName("First Name")]
[Required(ErrorMessage = "Please fill out the required field")]
[StringLength(50, ErrorMessage = "Please reduce to a maximum of 50 characters")]
public string FirstName { get; set; }

    So something on the lines of this that obviously doesn't work.

    [DisplayName("First Name")]
[Required(ErrorMessage = _umbracoHelper.GetDictionaryValue("First Name"))]
[StringLength(50, ErrorMessage = _umbracoHelper.GetDictionaryValue("Please reduce to a maximum of 50 characters"))]
public string FirstName { get; set; }

    Any help would be much appreciated. Its always a pain to get attributes working like this. I assumed Unmbraco may have found a good way of handling this now?

    Thanks in advance.

    David

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  • Philip Hayton 98 posts 435 karma points
    Mar 16, 2022 @ 16:09
    Philip Hayton
    0

    Don't suppose you found a solution to this did you?

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  • Philip Hayton 98 posts 435 karma points
    Mar 25, 2022 @ 15:15
    Philip Hayton
    0

    Just want to update this thread with the following package which solved this problem for me.

    https://our.umbraco.com/packages/developer-tools/umbraco-validation-attributes/

    Thank you so much to Martino 🙏🏻

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  • Anatoliy 5 posts 25 karma points
    1 week ago
    Anatoliy
    0

    It is not help, it provides you own annotation attributes instead of original. For umbraco 7 i had spent couple of hours to make it works with original .net data annotation. Idea was to register own annotation provider. Strange that umbraco doesn't contains that from start. but.

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  • Anatoliy 5 posts 25 karma points
    1 week ago
    Anatoliy
    0

    Following provider could be used from .net core version:

    public class UmbracoModelMetadataProvider : EmptyModelMetadataProvider {        
public override IEnumerable<ModelMetadata> GetMetadataForProperties(Type modelType)
{
    var mla = modelType.GetCustomAttribute<Xpand.UmbracoLocalizableAttribute>();
    if (mla == null || mla.Enable == false)
        return base.GetMetadataForProperties(modelType);
    else
        return base.GetMetadataForProperties(modelType).Select(EnsureLocalizedAttributes).ToArray();
}

private ModelMetadata EnsureLocalizedAttributes(ModelMetadata mmd)
{
    if (mmd is DefaultModelMetadata dmmd && dmmd != null)
    {
        if (!XApp.Get<IUmbracoHelperAccessor>().TryGetUmbracoHelper(out var helper)) return mmd;
        foreach (var attribute in dmmd.Attributes.Attributes)
        {
            var resulta = CloneAttribute(dmmd, attribute, helper);
        }                
    }
    return mmd;
}
protected virtual object CloneAttribute(DefaultModelMetadata propMetadata, object iattr, UmbracoHelper uhelper)
{
    var d = iattr as DisplayAttribute;
    if (d != null) return CloneDisplayAttribute(propMetadata, d, uhelper);
    var v = iattr as ValidationAttribute;
    if (v != null) return CloneValidationAttribute(v, uhelper);
    return iattr;
}

private DisplayAttribute CloneDisplayAttribute(DefaultModelMetadata propMetadata, DisplayAttribute attr, UmbracoHelper uhelper)
{
    if (attr.ResourceType != null) return attr;//it should be localized differently - from resources

    attr.Name = uhelper.GetDictionaryValueOrKey(attr.Name);
    attr.Description = uhelper.GetDictionaryValueOrKey(attr.Description);
    attr.ShortName = uhelper.GetDictionaryValueOrKey(attr.ShortName);
    attr.Prompt = uhelper.GetDictionaryValueOrKey(attr.Prompt);
    attr.GroupName = uhelper.GetDictionaryValueOrKey(attr.GroupName);

    propMetadata.DisplayMetadata.DisplayName =()=> attr.Name;
    propMetadata.DisplayMetadata.Placeholder= () => attr.Prompt;
    propMetadata.DisplayMetadata.Description= () => attr.Description;            
    return attr;
}
private ValidationAttribute CloneValidationAttribute(ValidationAttribute attr, UmbracoHelper uhelper)
{
    if (attr.ErrorMessageResourceType != null) return attr;//it should be localized differently - from resources            
    return ClonValidationMessage(attr, attr, uhelper);            
}

private ValidationAttribute ClonValidationMessage(ValidationAttribute dattr, ValidationAttribute sattr, UmbracoHelper uhelper)
{
    dattr.ErrorMessage = uhelper.GetDictionaryValueOrKey(sattr.ErrorMessage);
    return dattr;
}}

    Class has to be registered instead of orginial service as singletone: builder.Register(x => new UmbracoModelMetadataProvider()).AsSelf().As

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  • Yakov Lebski 554 posts 2119 karma points
    1 week ago
    Yakov Lebski
    0

    We developed dictionary data anotation for umbraco 10+ - you can try to use it https://www.nuget.org/packages/Dyfort.Umbraco.DictionaryMetadataProvider/1.0.0-beta1

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