View difference between Paste ID: SLHM85Xt and MaH1vDQa

 // server.js
 
 // above this exist some irrelevant code
 var router = new mapleTree.RouteTree(); // routing module. maps urls to functions
 var db = new mongo.Db(mongoDbName, server);
 var usersCollection = null;
 
 db.open(function(err, db) {
   if(err) {
     console.log('error opening mongo. make sure mongo is running');
     process.exit(1);
   } else {
     console.log("connected to mongo");
     usersCollection = new mongo.Collection(db, 'food');
   }
 });
 
 router.define( '/user', require('./routes/user.js') );
 
 // request goes here
 http.createServer(function(req, res) {
   res.error = ErrorPage(req, res, {});
   res.template = Templar(req, res, templarOptions);
   router.match(req.url).fn(req, res);
 }).listen(webSitePort);
 
 //----------------------
 // routes/user.js
 
 module.exports = user;
 
 function user (req, res) {
   console.log('collection', usersCollection); // not defined
   return res.end();
 };