public IHttpActionResult GetAll()
        {
            DietService dietService = CreateDietService();
            var         diets       = dietService.GetDiets();

            return(Ok(diets));
        }
        // GET: Diet
        public ActionResult Index()
        {
            var userId  = Guid.Parse(User.Identity.GetUserId());
            var service = new DietService(userId);
            var model   = service.GetDiets();

            return(View(model));
        }