Added support for schema field validation. no UI support.

NzbDrone.Api/Indexers/IndexerModule.cs

@@ -1,9 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using FluentValidation.Internal;
 using NzbDrone.Api.ClientSchema;
 using NzbDrone.Api.Mapping;
 using NzbDrone.Api.REST;
+using NzbDrone.Api.Validation;
 using NzbDrone.Core.Indexers;
 using Omu.ValueInjecter;
 using FluentValidation;
@@ -26,6 +28,8 @@ namespace NzbDrone.Api.Indexers
             SharedValidator.RuleFor(c => c.Name).NotEmpty();
             SharedValidator.RuleFor(c => c.Implementation).NotEmpty();
 
+            SharedValidator.RuleForField<string>(c => c.Fields, "Url").NotEmpty();
+
             PostValidator.RuleFor(c => c.Fields).NotEmpty();
         }
 

NzbDrone.Api/REST/ResourceValidator.cs

@@ -1,9 +1,38 @@
-using FluentValidation;
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using FluentValidation;
+using FluentValidation.Internal;
+using NzbDrone.Api.ClientSchema;
+using System.Linq;
 
 namespace NzbDrone.Api.REST
 {
     public class ResourceValidator<TResource> : AbstractValidator<TResource>
     {
+        public IRuleBuilderInitial<TResource, TProperty> RuleForField<TProperty>(Expression<Func<TResource, IEnumerable<Field>>> fieldListAccessor, string filedName)
+        {
+            var rule = new PropertyRule(fieldListAccessor.GetMember(), c => GetValue(c, fieldListAccessor.Compile(), filedName), null, () => { return CascadeMode.Continue; }, typeof(TProperty), typeof(TResource));
+            rule.PropertyName += "." + filedName;
+
+            AddRule(rule);
+            return new RuleBuilder<TResource, TProperty>(rule);
+        }
 
+        private static object GetValue(object container, Func<TResource, IEnumerable<Field>> fieldListAccessor, string fieldName)
+        {
+
+            var resource = fieldListAccessor((TResource)container).SingleOrDefault(c => c.Name == fieldName);
+
+            if (resource == null)
+            {
+                return null;
             }
+
+            return resource.Value;
+        }
+    }
+
+
+
 }