Added Newtonsoft.Json nuget package, and some classes and helpers for adapting the serialization of objects to json.

Author: deap82

src/FooBar.Web/Core/Json/CamelCaseExceptDictionaryKeysResolver.cs

@@ -0,0 +1,15 @@
+using System;
+using Newtonsoft.Json.Serialization;
+
+namespace FooBar.Web.Core.Json
+{
+    public class CamelCaseExceptDictionaryKeysResolver : CamelCasePropertyNamesContractResolver
+    {
+        protected override JsonDictionaryContract CreateDictionaryContract(Type objectType)
+        {
+            JsonDictionaryContract contract = base.CreateDictionaryContract(objectType);
+            contract.DictionaryKeyResolver = propertyName => propertyName;
+            return contract;
+        }
+    }
+}

src/FooBar.Web/Core/Json/FooBarContractResolver.cs

@@ -0,0 +1,10 @@
+namespace FooBar.Web.Core.Json
+{
+    public class FooBarContractResolver : NullToEmptyListResolver
+    {
+        //Marker class
+        //As Json.net don't accept multiple contract resolvers we need to use inheritance.
+        //For additional needs of custom contract resolvers, add your new one to the inheritance chain by changing the inheritance of this class
+        //and let your new resolver inherit from the one currently inherited here.
+    }
+}

src/FooBar.Web/Core/Json/JsonDateConverter.cs

@@ -0,0 +1,14 @@
+using System.Globalization;
+using Newtonsoft.Json.Converters;
+
+namespace FooBar.Web.Core.Json
+{
+    public class JsonDateConverter : IsoDateTimeConverter
+    {
+        public JsonDateConverter()
+        {
+            Culture = new CultureInfo("sv-SE"); //Force ISO 8601
+            DateTimeFormat = "d";
+        }
+    }
+}

src/FooBar.Web/Core/Json/JsonDateTimeConverter.cs

@@ -0,0 +1,14 @@
+using System.Globalization;
+using Newtonsoft.Json.Converters;
+
+namespace FooBar.Web.Core.Json
+{
+    public class JsonDateTimeConverter : IsoDateTimeConverter
+    {
+        public JsonDateTimeConverter()
+        {
+            Culture = new CultureInfo("sv-SE"); //Force ISO 8601
+            DateTimeFormat = "yyyy'-'MM'-'dd' 'HH':'mm";
+        }
+    }
+}

src/FooBar.Web/Core/Json/JsonHelpers.cs

@@ -0,0 +1,15 @@
+using Newtonsoft.Json;
+
+namespace FooBar.Web.Core.Json
+{
+    public static class JsonHelpers
+    {
+        public static JsonSerializerSettings CreateJsonSerializerSettings()
+        {
+            var settings = new JsonSerializerSettings { ContractResolver = new FooBarContractResolver() };
+            settings.Converters.Add(new JsonDateConverter());
+            return settings;
+        }
+
+    }
+}

src/FooBar.Web/Core/Json/JsonObjectExtensions.cs

@@ -0,0 +1,13 @@
+using Newtonsoft.Json;
+
+namespace FooBar.Web.Core.Json
+{
+    public static class JsonObjectExtensions
+    {
+        public static string ToJsonCamelCase(this object obj)
+        {
+            JsonSerializerSettings settings = JsonHelpers.CreateJsonSerializerSettings();
+            return JsonConvert.SerializeObject(obj, Formatting.None, settings);
+        }
+    }
+}

src/FooBar.Web/Core/Json/JsonTimeConverter.cs

@@ -0,0 +1,14 @@
+using System.Globalization;
+using Newtonsoft.Json.Converters;
+
+namespace FooBar.Web.Core.Json
+{
+    public class JsonTimeConverter : IsoDateTimeConverter
+    {
+        public JsonTimeConverter()
+        {
+            Culture = new CultureInfo("sv-SE"); //Force ISO 8601
+            DateTimeFormat = "t";
+        }
+    }
+}

src/FooBar.Web/Core/Json/NullToEmptyListResolver.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json.Serialization;
+using System.Reflection;
+
+namespace FooBar.Web.Core.Json
+{
+    //Inspired from http://stackoverflow.com/a/25150302/226589
+    public class NullToEmptyListResolver : CamelCaseExceptDictionaryKeysResolver
+    {
+        protected override IValueProvider CreateMemberValueProvider(MemberInfo member)
+        {
+            IValueProvider provider = base.CreateMemberValueProvider(member);
+
+            if (member.MemberType == MemberTypes.Property)
+            {
+                Type propType = ((PropertyInfo)member).PropertyType;
+                TypeInfo propTypeInfo = propType.GetTypeInfo();
+                if (propTypeInfo.IsGenericType &&
+                    propType.GetGenericTypeDefinition() == typeof(List<>))
+                {
+                    return new EmptyListValueProvider(provider, propType);
+                }
+            }
+
+            return provider;
+        }
+
+        class EmptyListValueProvider : IValueProvider
+        {
+            private IValueProvider innerProvider;
+            private object defaultValue;
+
+            public EmptyListValueProvider(IValueProvider innerProvider, Type listType)
+            {
+                this.innerProvider = innerProvider;
+                defaultValue = Activator.CreateInstance(listType);
+            }
+
+            public void SetValue(object target, object value)
+            {
+                innerProvider.SetValue(target, value ?? defaultValue);
+            }
+
+            public object GetValue(object target)
+            {
+                return innerProvider.GetValue(target) ?? defaultValue;
+            }
+        }
+    }
+}

src/FooBar.Web/FooBar.Web.csproj

@@ -41,6 +41,7 @@
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.0.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.0.1" />
     <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
   </ItemGroup>
   <ItemGroup>
     <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0-msbuild3-final" />