public IHttpActionResult Add(JObject input)
        {
            Dvd dvd = DvdMapper.ToDVD(input);

            _repo.Create(dvd);

            JObject result = DvdMapper.ToJSON(dvd);

            return(Created($"dvd/{dvd.DvdId}", result));
        }
        public void Update(int id, JObject input)
        {
            Dvd dvd = DvdMapper.ToDVD(input);

            _repo.Update(dvd);
        }