public async Task <CommentModel> GetCommentAsync(string id)
{
if (id == null)
{
throw new ArgumentNullException();
}
var comment = await _dBContext.Comments.Where(c => c.Id == int.Parse(id)).SingleOrDefaultAsync();
if (comment == null)
{
throw new NotFoundException($"没找到id为：{id}的评论");
}
return(ModelEntityHelper.CommentE2M(comment));
}
public async Task <IList <CommentModel> > GetCommentsAsync(string articleId, int start, int count)
{
if (articleId == null)
{
throw new ArgumentNullException();
}
IList <CommentModel> commentModels = new List <CommentModel>();
var commentsByArticleId = await _dBContext.Comments.Where(c => c.ArticleId == int.Parse(articleId)).ToListAsync();
if (commentsByArticleId == null)
{
throw new NotFoundException($"没找到id为：{articleId} 的文章");
}
commentsByArticleId = commentsByArticleId.OrderByDescending(c => c.Id).Skip(start).Take(count).ToList();
foreach (CommentEntity ce in commentsByArticleId)
{
var cm = ModelEntityHelper.CommentE2M(ce);
commentModels.Add(cm);
}
return(commentModels);
}