node.js 猫鼬 findOneAndUpdate 不起作用
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Mongoose findOneAndUpdate not working
提问by lostintranslation
I am trying to use 'findOneAndUpdate' in mongoose and the updated JS object I am sending is not getting saved to mongo. I do not get an error upon saving, but I do get back a null for the updated object. Any ideas what I might be doing wrong? This is example is trying to update the entire object as stored in mongo, i.e. overwrite the name object.
我正在尝试在 mongoose 中使用“findOneAndUpdate”，并且我发送的更新的 JS 对象没有保存到 mongo。保存时我没有收到错误消息，但我确实为更新的对象返回了一个空值。任何想法我可能做错了什么？这是一个示例，试图更新存储在 mongo 中的整个对象，即覆盖名称对象。
var query = {"_id": id};
var update = {name: {first: 'john', last: 'smith'}};
var options = {new: true};
People.findOneAndUpdate(query, update, options, function(err, person) {
if (err) {
console.log('got an error');
}
// at this point person is null.
});
采纳答案by lostintranslation
Turns out that the id I was searching for did not exist, hence the null return. Works as expected!
原来我要搜索的 id 不存在，因此返回空值。按预期工作！
