public IHttpActionResult PostRating([FromBody] Rating rating)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var movie = _movieFactory.GetMovie(rating.MovieId);
            var user  = _userFactory.GetUser(rating.UserId);

            if (movie != null && user != null)
            {
                var result = _ratingFactory.PostRating(rating);
                if (!result)
                {
                    return(NotFound());
                }

                if (result)
                {
                    return(Ok());
                }
            }
            else
            {
                return(BadRequest());
            }

            return(StatusCode(HttpStatusCode.NoContent));
        }