--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Agendas/trunk/src/Agendas.Web/CustomModelMetadataProvider/DataAnnotationAndConventionModelMetadataProvider.cs	Wed May 25 01:20:24 2011 -0300
@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Web.Mvc;
+
+namespace AltNetHispano.Agendas.Web.CustomModelMetadataProvider
+{
+	public class DataAnnotationAndConventionModelMetadataProvider : DataAnnotationsModelMetadataProvider
+	{
+		private readonly IResolverByConvention _resolverByConvention;
+		private List<Attribute> _attributeList;
+
+		public DataAnnotationAndConventionModelMetadataProvider(IResolverByConvention resolverByConvention)
+		{
+			_resolverByConvention = resolverByConvention;
+		}
+
+		protected override ModelMetadata CreateMetadata(IEnumerable<Attribute> attributes, Type containerType, Func<object> modelAccessor, Type modelType, string propertyName)
+		{
+			_attributeList = new List<Attribute>(attributes);
+
+			var modelMetadata = base.CreateMetadata(attributes, containerType, modelAccessor, modelType, propertyName);
+
+			if (propertyName != null)
+			{
+				if (string.IsNullOrWhiteSpace(modelMetadata.DisplayName))
+					modelMetadata.DisplayName = _resolverByConvention.GetDisplayName(propertyName);
+
+				if (string.IsNullOrWhiteSpace(modelMetadata.Description))
+					modelMetadata.Description = _resolverByConvention.GetDescription(propertyName);
+
+				var validators = _attributeList.OfType<ValidationAttribute>();
+				foreach (var validator in validators)
+				{
+					if (string.IsNullOrWhiteSpace(validator.ErrorMessage) &&
+					    string.IsNullOrWhiteSpace(validator.ErrorMessageResourceName))
+					{
+						var resourceName = propertyName + validator.GetType().Name;
+						if (resourceName.EndsWith("Attribute"))
+							resourceName = resourceName.Substring(0, resourceName.Length - 9);
+						var resourceType = validator.ErrorMessageResourceType ?? _resolverByConvention.ResourceType;
+						var prop = resourceType.GetProperty(resourceName);
+						if (prop != null)
+						{
+							validator.ErrorMessageResourceType = resourceType;
+							validator.ErrorMessageResourceName = resourceName;
+						}
+					}
+				}
+			}
+
+			return modelMetadata;
+		}
+	}
+}
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