Mongoose 中的错误处理 [英] Error handling in Mongoose

问题描述

我正在使用 Restify 和 Mongoose，我对两者都是全新的.我似乎无法找出处理 Mongoose/Node.js 中错误的正确方法.

I'm creating an API using Restify and Mongoose, and I'm completely new to both. I can't seem to figure out the proper way to handle errors in Mongoose / Node.

截至目前，我正在尝试做这样的事情:

As of now, I'm trying to do something like this:

Submission.findById(req.params.submission_id, function(err, data) {

    if (err) 
        return next(err);

    res.send(data);

});

我正在尝试对此调用 GET(对于不存在的用户).而不是发回简单的错误消息，它会导致我的整个节点应用程序失败.我对 return next(err) 的用户以及它到底应该做什么感到有些困惑.

I'm attempting to call a GET on this (for a user that not exist). And rather than sending back a simple error message, it causes my entire node application to fail. I'm a bit confused on the user of return next(err) and what that exactly should do.

非常感谢任何帮助.

推荐答案

未找到匹配项的 findById 查询不是 Mongoose 级别的错误，因此您可以根据需要那样对待你必须自己做:

A findById query that doesn't find a match isn't an error at the Mongoose level, so you if you want it treated that way you have to do it yourself:

Submission.findById(req.params.submission_id, function(err, data) {

    if (err)
        return next(err);
    else if (!data)
        return next(new Error("User not found"));

    res.send(data);

});

这篇关于Mongoose 中的错误处理的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！