IModelBinder not firing on MVC 3

Question

I have this Controller:

[HttpPost]
public JsonResult Execute(PaymentModel paymentModel){...}

this is the model

public class PaymentModel
{
[Required]
[DisplayName("Full name")]
public string FullName { get; set; }
...
}

this is the binding action

 protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            RegisterGlobalFilters(GlobalFilters.Filters);
            RegisterRoutes(RouteTable.Routes);
            ModelBinders.Binders.Add(typeof(PaymentModel), new PaymentModelsBinding());           
        }

this is the binding inplementation

public class PaymentModelsBinding : IModelBinder
    {
        public  object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
//Cant get to here with the debugger
}

I dont know if that is relevant or not, but I am injecting using Ninject to the controller constructor.

Update This is how the form is submitted:

            $.ajax({
                type: 'POST',
                url: $("#form").attr("action"),
                data: $("#form").serialize(),
                success: function (json) {
                    ...

                },
                dataType: "Json"
            });

I want that to be restful, meaning I will to call it in every possible WEB way.
Browser Ajax, Browser Classic form submission, WebClient... and more.

Update This is my ninject code:

kernel.Components.Add<IInjectionHeuristic, CustomInjectionHeuristic>();


            kernel.Bind<IPaymentMethodFactory>().ToProvider<PaymentMethodFactoryProvider>().InSingletonScope();
            kernel.Bind<IDefaultBll>().To<DefaultBll>().InSingletonScope();

            kernel
                .Bind<IDalSession>()
                .ToProvider<HttpDalSessionProvider>()
                .InRequestScope();

Thanks

Answer 1

Sorry, I can't see anything wrong with your code. This should work. And as a proof of concept, here's what you could try:

1. Create a new ASP.NET MVC 3 application using the Internet Template

2. Define a view model:

       public class PaymentModel
       {
           [Required]
           [DisplayName("Full name")]
           public string FullName { get; set; }
       }
   

3. A custom model binder:

   public class PaymentModelsBinding : IModelBinder
   {
       public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
       {
           return new PaymentModel();
       }
   }
   

4. HomeController:

   public class HomeController : Controller
   {
       public ActionResult Index()
       {
           return View(new PaymentModel());
       }
   
       [HttpPost]
       public ActionResult Index(PaymentModel model)
       {
           return Json(new { success = true });
       }
   }
   

5. A corresponding view (~/Views/Home/Index.cshtml):

   @model PaymentModel
   
   @using (Html.BeginForm(null, null, FormMethod.Post, new { id = "form" }))
   {
       @Html.EditorFor(x => x.FullName)
       <button type="submit">OK</button>
   }
   
   <script type="text/javascript">
       $('#form').submit(function () {
           $.ajax({
               type: this.method,
               url: this.action,
               data: $(this).serialize(),
               success: function (json) {
   
               }
           });
           return false;
       });
   </script>
   

6. And finally register the model binder in Application_Start:

   ModelBinders.Binders.Add(typeof(PaymentModel), new PaymentModelsBinding());
   

7. Run the application in Debug mode, submit the form and the custom model binder gets hit.

So the question now becomes: what did you do differently?