U4-8614 JsonCamelCaseFormatter breaks the global configuration for th…

…e default JsonMediaTypeFormatter

src/Umbraco.Web/WebApi/JsonCamelCaseFormatter.cs

@@ -1,5 +1,8 @@
 using System;
+using System.Linq;
+using System.Net.Http.Formatting;
 using System.Web.Http.Controllers;
+using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 
 namespace Umbraco.Web.WebApi
@@ -11,7 +14,21 @@ public class JsonCamelCaseFormatter : Attribute, IControllerConfiguration
     {
         public void Initialize(HttpControllerSettings controllerSettings, HttpControllerDescriptor controllerDescriptor)
         {
-            controllerSettings.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
+            //remove all json formatters then add our custom one
+            var toRemove = controllerSettings.Formatters.Where(t => (t is JsonMediaTypeFormatter)).ToList();
+            foreach (var r in toRemove)
+            {
+                controllerSettings.Formatters.Remove(r);
+            }
+
+            var jsonFormatter = new JsonMediaTypeFormatter
+            {
+                SerializerSettings =
+                {
+                    ContractResolver = new CamelCasePropertyNamesContractResolver()
+                }
+            };
+            controllerSettings.Formatters.Add(jsonFormatter);
         }    
     }
 }