Delegating Controller

gistfile1.cs

    public class HomeController : DelegatingControllers.DelegatingController
    {
        public ActionResult Edit(UserEditQueryModel model)
        {
            var vm = Invoker.Execute<UserEditQueryModel, UserEditViewModel>(model);
            return View(vm);
        }

        public ActionResult Edit(UserEditInputModel model)
        {
            if (!ModelState.IsValid)
            {
                return Edit(new UserEditQueryModel());
            }

            Invoker.Execute(model);
            //There is an overload which allows data to be returned if you have to conditionally redirect somewhere else.

            return RedirectToAction("Edit");
        }
    }

    public class UserEditViewModel
    {
        public string Id { get; set; }
        public string Data { get; set; }
        public IList<string> RefData { get; set; }
    }

    public class UserEditInputModel
    {
        public string Id { get; set; }
        public string Data { get; set; }
    }

    public class UserEditQueryModel
    {
        public string Id { get; set; }
    }

    public class UserEditQueryHandler : IHandler<UserEditQueryModel, UserEditViewModel>
    {
        public UserEditViewModel Handle(UserEditQueryModel inputModel)
        {
            return new UserEditViewModel();
        }
    }

    public class UserEditSaveHandler : IHandler<UserEditInputModel>
    {
        public void Handle(UserEditInputModel command)
        {
            var user = Session.Find<User>(command.Id) ?? new User();
            user.Data = command.Data;
            Session.Save(user);
        }
    }