使用Mongoose获取所有数据库的列表

问题描述

还有一些类似的问题，但所有问题都涉及使用 MongoDB NodeJS驱动程序代替猫鼬ODM .

There are some similar questions but all of them involves using the MongoDB NodeJS driver instead of Mongoose ODM.

我阅读了文档，但找不到此类功能.

I read the docs but couldn't find such functionality.

推荐答案

您不能直接从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:

You can't directly get the list from the connection provided by mongoose, but it's easy to do with the mongo Admin object as it contains a function called listDatabases:

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;
    });
});

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