渲染动作性能

Question

我有显示问题、答案、对答案和问题的评论的视图。

要显示所有数据，我想使用这样的东西：

    [HttpGet, ChildActionOnly]
    public PartialViewResult RenderQuestion(int questionId, int page, int pageSize, string sort)//For question display
    {
        var question = questionsService.GetQuestion(questionId);
        var author = userService.GetUser(question.AuthorId);
        var commentIds = commentService.GetTopCommentIds(questionId, int.MaxValue, CommentType.Question);
        var answerIds = answerService.GetAnswerIdsByQuestion(page, pageSize, questionId, sort);
        var model = new QuestionModel{ Question = question, Author = author, CommentIds = commentIds, AnswerIds = answerIds}
        return PartialView("_Question", model);
    }
    [HttpGet, ChildActionOnly]
    public PartialViewResult RenderAnswer(int answerId)
    {
        var answer = answerService.GetAnswer(answerId);
        var author = userService.GetUser(answer.AuthorId);
        var commentIds = commentService.GetTopCommentIds(answerId, int.MaxValue, CommentType.Answer);
        var model = new AnswerModel { Answer = answer, Author = author, CommentIds = commentIds};
        return PartialView("_Answer");
    }

    [HttpGet, ChildActionOnly]
    public PartialViewResult RenderComment(int commentId, CommentType commentType)
    {
        var comment = commentService.GetComment(commentId, commentType);
        var author = userService.GetUser(comment.AuthorId);
        var model = new CommentModel { Comment = comment, Author = author};
        return PartialView("_Comment");
    }

在我的部分视图中，例如对于问题，我将在循环 Model.AnswerIds 中迭代并调用 @{ Html.RenderAction("RenderAnswer" , new {answerId}) }; 和 Model.CommentIds 并调用 @{ Html.RenderAction("RenderComment", new {commentId}) };

我想要要知道，这是一种很好的视图分解方式吗？这种方式是否会对性能造成不良影响，导致经常调用@Html.RenderAction。

Answer 1

不幸的是，这会导致性能不佳。 RenderAction 并不以其惊人的速度而闻名。

您还将多次实例化控制器（也可能多次打开数据库）。

我建议您将所有内容放入一个专门的控制器操作中。