使用Mongoose获取所有数据库的列表

时间:2013-02-11 23:01:41

标签: node.js mongodb mongoose

有一些类似的问题,但所有问题都涉及使用MongoDB NodeJS driver代替Mongoose ODM

我看了the docs但找不到这样的功能。

3 个答案:

答案 0 :(得分:10)

你不能直接从mongoose提供的连接中获取列表,但是使用mongo Admin对象很容易,因为它包含一个名为listDatabases的函数:

var mongoose = require('mongoose')
    , Admin = mongoose.mongo.Admin;

/// create a connection to the DB    
var connection = mongoose.createConnection(
    'mongodb://user:pass@localhost:port/database');
connection.on('open', function() {
    // connection established
    new Admin(connection.db).listDatabases(function(err, result) {
        console.log('listDatabases succeeded');
        // database list stored in result.databases
        var allDatabases = result.databases;    
    });
});

答案 1 :(得分:1)

使用mongoose(版本6.10。*)获取所有mongo数据库列表的一种非常现代的方法是 创建一个mongoose连接以连接到Mongo的管理数据库 ,并进行确保您具有管理员用户

猫鼬对象是一个非常复杂的对象。列出数据库:

const connection = `mongodb://${encodeURIComponent(username)}:${encodeURIComponent(password)}@${hostname}:${port}/admin`

mongoose is a very complex object with promises for executing several functions. to list the db's : 


    mongoose.connect(connection,  {  useNewUrlParser: true ,  useUnifiedTopology: true })
                .then( (MongooseNode) => { 

         /* I use the default nativeConnection object since my connection object uses a single hostname and port. Iterate here if you work with multiple hostnames in the connection object */
                const nativeConnetion =  MongooseNode.connections[0]

       //now call the list databases function
                new Admin(nativeConnetion.db).listDatabases(function(err, results){
                        console.log(results)  //store results and use
                    });
        })

结果:

{ databases:
   [ { name: 'admin', sizeOnDisk: 184320, empty: false },
     { name: 'config', sizeOnDisk: 73728, empty: false },
     { name: 'local', sizeOnDisk: 73728, empty: false },
     { name: 'test', sizeOnDisk: 405504, empty: false } ],
  totalSize: 737280,
  ok: 1 }

答案 2 :(得分:-1)

尝试运行this code。原始来自Gist