node.js - 如何像猫鼬一样进行选择

Question

我有这个 Track Schema {"_id": '123', "external_id": 'abc', "name": 'make work'}，我有 queryngexternal_id作为 songId 和namesongTitle。这个怎么做？

标签： node.jsmongoose

Answer 1

const mongoose = require('mongoose');

const Schema = mongoose.Schema

const trackEsquema = new Schema({
    external_id: { type: String, unique: true },
    name: String,
});

const Track = mongoose.model('Track', trackEsquema);

const songs = await Track.find({}, { "_id": 0, "songId": "$external_id", "songTitle": "$name"});