public static List<RatingsIndexModel> GetModels(object cell)
        {
            List<RatingsIndexModel> ret = new List<RatingsIndexModel>();

            using (var ctx = new Entities())
            {
                int parent = ctx.GetCellID(cell);
                var list = ctx.GetRatingsIndex(parent).ToList();
                list.ForEach(i => ret.Add(new RatingsIndexModel(i)));
            }

            return ret;
        }