public IEnumerable <PostDto> GetFollowingUsersPosts(string userName) { var followingUserNames = _profileService.GetFollowing(userName).Select(p => p.UserName); var followingUserPosts = _postProvider.GetFollowingPost(followingUserNames).ToList(); followingUserPosts.Sort((x, y) => DateTime.Compare(x.CreatedAt, y.CreatedAt)); return(followingUserPosts.Select(p => _mapper.Map <PostDto>(p))); }