Mongoose 在没有 _id 字段的情况下检索数据 [英] Mongoose retrieving data without _id field

问题描述

我想从我的 Node.js 应用程序中的 Mongoose 设置中检索一些数据.我注意到无论我写什么作为字段选择，我总是得到 _id 字段.有没有办法不取?这就是我现在的做法:

I would like to retrieve some data from a Mongoose setting in my Node.js application. I noticed that no matter what I write as field selection, I always get the _id field. Is there a way not to fetch it? This is how I do right now:

Transaction.find({username : user.username}, ['uniqueId', 'timeout', 'confirmation_link', 'item_name'], function(err, txs){
        console.log("user : " + user.username + " with txs: " + txs);
        callback(txs);
});

并记录包含 _id 字段的结果.

And logs me the results which contain the _id field.

推荐答案

_id 必须特别排除.例如，

_id must be specifically excluded. For example,

Transaction.find({username : user.username}, { '_id': 0, 'uniqueId' :1, 'timeout': 1, 'confirmation_link': 1, 'item_name': 1}, function(err, txs){
  console.log("user : " + user.username + " with txs: " + txs);
  callback(txs);
});

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