findOneAndUpdate mongoose查询返回旧数据库值

Posted 2021-05-06

以下是我的代码快照，我遇到了使用{new：true}作为附加参数的解决方案，但是我无法将它与.then（）函数一起使用。我需要一些方法来检索更新的值。

router.post('/profile/:userId', checkAuth, (req, res, next) => {
Profile.findOneAndUpdate({
    name: req.body.name,
    age: req.body.age,
    user: req.body.user,
    education: req.body.education,
    location: req.body.location,
    phone: req.body.phone
}).then(result => {
    console.log(result);
    res.status(201).json(result);
}).catch(err => {
    console.log(err);
    res.status(500).json({error: err});
});

});

答案

我通过添加.exec（）来解决它，以获得真正的承诺，因为Mongoose查询不返回承诺。

router.post('/profile/:userId', checkAuth, (req, res, next) => {
var query = {};
var update = {
    name: req.body.name,
    age: req.body.age,
    user: req.body.user,
    education: req.body.education,
    location: req.body.location,
    phone: req.body.phone
};
var options = {upsert: true, new: true,};
Profile.findOneAndUpdate(query, update, options)
    .exec()
    .then( result => {
        console.log(result);
        res.status(201).json(result);
    })
    .catch( err => {
        console.log(err);
        res.status(500).json({error: err});
    })

});

帮助链接 - > Mongoose - What does the exec function do?

另一答案

您需要添加选项new: true才能获取更新的文档。 http://mongoosejs.com/docs/api.html#model_Model.findOneAndUpdate

没有回调函数就无法使用此选项。

代码示例：

router.post('/profile/:userId', checkAuth, (req, res, next) => {
  Profile.findOneAndUpdate({
    name: req.body.name,
    age: req.body.age,
    user: req.body.user,
    education: req.body.education,
    location: req.body.location,
    phone: req.body.phone
  },(err) => {
      if (err) {
        console.log(err);
        res.status(500).json({error: err});
      } else {
        console.log(doc);
        res.status(201).json(doc);
      }
  });
});