Fuller code example showing the MVC implementation

mvc.js

function endsWith(str, suffix) {
	return str.substr(-1) === suffix;
}

function ActionController(baseRoute, actions) {
	this._baseRoute = baseRoute;
	this._actions = actions;
}

ActionController.prototype.boot = function(app) {
	var baseRoute = this._baseRoute;
	baseRoute = endsWith(baseRoute, '/') ? baseRoute : baseRoute + '/';
	console.log('baseroute is: ' + baseRoute);
	
	for (actionName in this._actions) {
		var action = this._actions[actionName];
		var route = baseRoute + actionName;
		
		if (action.get && typeof(action.get) == 'function') {
			app.get(route, action.get);
		}
		if (action.post && typeof(action.post) == 'function') {
			app.post(route, action.post);
		}
		if (action.put && typeof(action.put) == 'function') {
			app.put(route, action.put);
		}
		if (action.del && typeof(action.del) == 'function') {
			app.del(route, action.del);
		}
	}
}

//Expose globally
exports.ActionController = ActionController;

UserController.js

//This is a pared-down example of my application's file.

var app = module.exports = express.createServer();

//Configure app...

//Define controller.
var UserController = new ActionController('/users/', {
	show: {
		get: function(req, res) {
			mg.connect('mongodb://localhost/local');
			User.find({}, function(errors, users) {
				mg.connection.close();
				res.render('index', {
					title: 'Example Page',
					users: users
				});
			});

		}
	}
}

//There are other actions defined, but I have omitted them for this example.

//This initializes everything.
UserController.boot(app);

if (!module.parent) {
  app.listen(3000);
  console.log("Express server listening on port %d", app.address().port)
}