MongoDB -- client.open() returns "undefined in not a function"

Question

Here's what I have:

var express = require('express');
var MongoClient = require('mongodb').MongoClient;
var Server = require('mongodb').Server;

var app = express();

var client = new MongoClient(new Server('localhost', 27017, {}), {});

client.open(function(err, client){
//callback
});

And when I run it, it points to the line the open method is on and says "undefined is not a function". What am I doing wrong?

Did you follow the docs, does it say you should require the same module twice like that ? — adeneo
– adeneo, Commented Jun 26, 2015 at 10:56
What happens when you use client.connect() instead of client.open()? — Hamed
– Hamed, Commented Jun 26, 2015 at 10:59

Hamed · Accepted Answer · 2015-06-26 10:57:42Z

5

From the mongo docs :

var MongoClient = require('mongodb').MongoClient

// Connection URL
var url = 'mongodb://localhost:27017/myproject';
// Use connect method to connect to the Server
MongoClient.connect(url, function(err, db) {
  console.log("Connected correctly to server");

  db.close();
});

answered Jun 26, 2015 at 10:57

Hamed

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1 Comment

Nathan Over a year ago

Figured out my problem. The book I was following instructions on was using 1.4. I had 2.0 installed.

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