request.body undefined after using express bodyParser

Edit: i fixed it by using:

app.configure(function(){
    app.use(express.bodyParser());
});

Original post:

I'm trying to figure out how to handle a post with node and express and i'm completely stuck.

After some reading i noticed people saying i should use 'middleware' whatever that means and create a line app.use(express.bodyParser());. I assumed that after adding that i would have a req.body available in my post method. This isn't the case however. It console.log's into a undefined.

I think I don't know how to properly set this up, so here goes nothing:

var express = require('express')
  , routes = require('./routes')
  , user = require('./routes/user')
  , http = require('http')
  , path = require('path')
  , UserProvider = require('./userprovider').UserProvider,
  qs = require('querystring');

var userProvider = new UserProvider('localhost', 27017);

var app = express(), 
    server = require('http').createServer(app),
    io = require('socket.io').listen(server);

server.listen(8080);

app.get('/', function (req, res) {
    res.sendfile(__dirname + '/index.html');
});

app.get('/new_game', function (req, res) {
    res.sendfile(__dirname + '/new_game.html');
});


app.post('/new_game', function(req, res) {
    var codeToUse = Math.random()*10000;
    codeToUse = Math.round(codeToUse);
    console.log(req.body);
});


app.use(express.bodyParser());



app.listen(3000);