var comments = db.Comments.Where(c =>
                        c.Post.ID == id
                        && c.Status == Helpers.StatusCode.Visible
                    )
                    .Select(x => new CommentTemp()
                    {
                        Id = x.ID,
                        Text = x.Text,
                        Avatar = "-1",
                        Username = (x.User != null ? x.User.UserName : "Anonymous"),
                        UserID = (x.User != null ? (int?) x.User.Id : null),
                        ResponseTo = (x.ResponseTo == null ?  null : (int?) x.ResponseTo.ID),
                        CommentDepth = ??? // <--- how do i select the depth of the response to relations?
                        Created = x.Created
                    }).ToList();