Question

I am trying to set up a simple mongodb test server within my app.js node application but I keep getting “TypeError: Cannot read property ‘arbiterOnly’ of undefined”. I am running it on local host and I have installed mongo db by running npm install mongodb in the folder I am making the application in. any help one what I am doing wrong would be greatly apreciated

here is my code for my application

var express = require('express')
  , routes = require('./routes')
  , user = require('./routes/user')
  , http = require('http')
  , path = require('path');
  var Db = require('mongodb').Db;
var Server = require('mongodb').Server;
var client = new Db('test', new Server('localhost:', 3100, {}));

var insertData = function(err, collection) {
    collection.insert({name: "Kristiono Setyadi"});
    collection.insert({name: "Meghan Gill"});
    collection.insert({name: "Spiderman"});
    // you can add as many object as you want into the database
}

var removeData = function(err, collection) {
    collection.remove({name: "Spiderman"});
}

var updateData = function(err, collection) {
    collection.update({name: "Kristiono Setyadi"}, {name: "Kristiono Setyadi", sex: "Male"});
}

var listAllData = function(err, collection) {
    collection.find().toArray(function(err, results) {
        console.log(results);
    });
}

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.favicon());
  app.use(express.logger('dev'));
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.cookieParser('your secret here'));
  app.use(express.session());
  app.use(app.router);
  app.use(express.static(path.join(__dirname, 'public')));
});


client.open(function(err, pClient) {
    client.collection('test_insert', insertData);
  //  client.collection('test_insert', removeData);
    // etc.
});

var people = [{name:'Keth',age:'33',email:'[e-mail]'},
{name:'Donny',age:'20',email:'[e-mail]'},
{name:'Loran',age:'26',email:'[e-mail]'},
{name:'Max',age:'18',email:'[e-mail]'}];

app.configure('development', function(){
  app.use(express.errorHandler());
});

app.get('/', routes.index);
app.get('/users', user.list);
app.get('/people', function(req, res){
  res.render('peeps', {people:people});
});

app.get('/people/:id', function(req, res){
var guy;
  for (var i =0 ; i < people.length ; i++)
  {
    if(people[i].name == req.params.id)
      guy = people[i];

  }
  res.render('viewPerson', {guy:guy});
});

http.createServer(app).listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});

Answer 1

My first guess here is that the connection is not opening. Try logging err with console.log in the client.open function. Also, the post you’re getting your test code from is about 18 months old, it’s possible that the code is out of date.