node.js - 试图从 mongoose 获取收藏列表

Question

我正在尝试使用 mongoose 返回一个 dbs 集合列表。我按照此处列出的指示进行操作，但 http://grokbase.com/t/gg/mongoose-orm/122xxxr7qy/mongoose-get-a-list-of-all-collections .所以这是我的代码

var mongoose = require('mongoose');
    //if (mongoose.connection.readyState == 0){//checks if already connected to the database
    console.log("creating connection to the database");
    var Config = require('../configs/config');
    var config = new Config();
    config = config.getConfig().db.dev;

    if (mongoose.connection.readyState = 0 ) {
    mongoose.connect("mongodb://austin:password1@paulo.mongohq.com:10023/test1");
    console.log('mongoose readyState is ' + mongoose.connection.readyState);
    }
    var collection;

    mongoose.connection.on('open', function (ref) {
        console.log('Connected to mongo server.');
    });

    //trying to get collection names
    mongoose.connection.db.collectionNames(function (err, names) {
        console.log(names); // [{ name: 'dbname.myCollection' }]
        module.exports.Collection = names;
    });

唯一的问题是名称返回未定义。那么是否有可能仅使用 vanilla mongoose 返回一个集合列表？

Answer 1

刚刚遇到这个答案，虽然它可能在看起来 collectionNames 已从可用函数名称中删除以支持 listCollections

时起作用

另一个堆栈溢出帖子有一个工作示例:https://stackoverflow.com/a/29461274/4127352

这里是原始文档的链接:http://mongodb.github.io/node-mongodb-native/2.0/meta/changes-from-1.0/