Controlador con auditoria manual

Audit.PizzaController.cs

using System.Web.Mvc;
using AuditSample.Models;
using Microsoft.AspNet.Identity;

namespace AuditSample.Controllers
{
    [Authorize]
    public class PizzaController : Controller
    {
        private readonly IApplicationService _applicationService;

        public PizzaController(IApplicationService applicationService)
        {
            _applicationService = applicationService;
        }

        // GET: Pizza/Create        
        public ActionResult Create()
        {            
            return View();
        }

        // POST: Pizza/Create
        [HttpPost]
        public ActionResult Create(Pizza nueva)
        {

            if (ModelState.IsValid)
            {
                //Agregar detalles de auditoria de manera manual
                nueva.UserId = User.Identity.GetUserId();
                nueva.Ip = HttpContext.Request.UserHostAddress;

                var response = applicationService.create(nueva);
                if (response.IsCorrect)
                    return View("_Success", response);
            }
            return View(nueva);            
        }        
    }
}