Helpers for Umbraco dictionary usage over MVC models

DictionaryDisplayNameAttribute

public class DictionaryDisplayNameAttribute : DisplayNameAttribute
  {
        private readonly string resourceName;

        public DictionaryDisplayNameAttribute(string resourceName)
            : base()
        {
            this.resourceName = resourceName;
        }

        public override string DisplayName
        {
            get
            {
                return DictionaryHelper.GetItemOrDefault(this.resourceName);
            }
        }

    }

public class DictionaryRequiredAttribute : RequiredAttribute, IClientValidatable
  {
        public DictionaryRequiredAttribute() :
            base()
        {
            ErrorMessage = DictionaryHelper.GetItemOrDefault("RequiredError");
        }


        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            yield return new ModelClientValidationRule
            {
                ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()),
                ValidationType = "required"
            };
        }
    }

public class DictionaryStringLengthAttribute : StringLengthAttribute, IClientValidatable
  {
        public DictionaryStringLengthAttribute(int maximumLength)
            : base(maximumLength)
        {
            ErrorMessage = DictionaryHelper.GetItemOrDefault("MaxLengthError");
        }

        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            yield return new ModelClientValidationRule
            {
                ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()),
                ValidationType = "maxlength"
            };
        }
    }

public class DictionaryRegularExpressionAttribute : RegularExpressionAttribute, IClientValidatable
  {
        public DictionaryRegularExpressionAttribute(string pattern)
            : base(pattern)
        {
            ErrorMessage = DictionaryHelper.GetItemOrDefault("RegexError");
        }

        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            var ret = new List<ModelClientValidationRule>();
            var mError = new ModelClientValidationRule
                {
                    ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()),
                    ValidationType = "regex"
                };
            mError.ValidationParameters.Add("pattern", Pattern);
            ret.Add(mError);
            return ret;
        }
    }
    
    //This is a sample Model explaining the usage of the helpers
    //public class SampleUsageModel
    //{
    //    [DictionaryDisplayName("Name")]
    //    [DictionaryRequired]
    //    public string Name { get; set; }
    
    //    [DictionaryDisplayName("Emailaddress")]
    //    [DictionaryRegularExpression(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*")]
    //    [DictionaryRequired]
    //    public string Email { get; set; }
    //}