public ICollection <PostModel> GetPosts(int categoryId) { var queryResult = _categoryService.GetCategoryPosts(categoryId.ToString()); List <PostModel> posts = new List <PostModel>(); foreach (var post in queryResult) { posts.Add(new PostModel { Id = post.Id, Subject = post.Subject, SentAt = post.SentAt, SentBy = post.SentBy }); } return(posts); }