node.js - Mongoose - 只返回数组的内容，而不是它的名字

Question

我的 Mongoose 查询返回了这样一个 JSON:

[{
    "messages": [{
        "body": "this is the body",
        "sender": "John",
        "_id": "56ffbabb9a984f0804e8b3a0"
    }, {
        "body": "message body",
        "sender": "Jake",
        "_id": "56ffc60c68a75ab835a7e097"
    }]
}]

我想得到这个(只有数组的内容，没有它的名字):

[{
    "body": "this is the body",
    "sender": "John",
    "_id": "56ffbabb9a984f0804e8b3a0"
}, {
    "body": "message body",
    "sender": "Jake",
    "_id": "56ffc60c68a75ab835a7e097"
}]

查询现在看起来如下:

var query = Messages.find({_id: id}).select('-_id -__v');

query.exec(function(err, messages){
      if(err)
        res.send(err);

        res.json(messages);
      });

我应该在此处更改什么以获得所需的输出？

Answer 1

尝试:

// change .find to .findOne to get just the one record you want
var query = Messages.findOne({_id: id}).select('-_id -__v');

query.exec(function(err, message){
      if(err)
        res.send(err);
        // return just the .messages collection within the selected message
        res.json(message.messages);
      });