Allows you to customize ExpressJS's view rendering so that you can, say, use views in a 'mobile' folder when user is accessing site through a mobile device.

express-viewresolver.js

// dependencies: requirejs, express

define(['express'], function (express) {
  return function (app, resolver) {
		return function(req, res, next) {
			var oldRender = res.render;
			res.render = function (view, model) {
				return oldRender.call(this, resolver.call(this, req, res) + view, model);
			};
			next();
		};
	};
});

// Example:

// If the user is accessing the site from a mobile device, load views from the /mobile subfolder.

// Dependencies: mobile-agent, express

// var viewResolver = function(req, res) {
//   if (mobileAgent(req.headers['user-agent']).Mobile) {
// 		return 'mobile/';
// 	}
// 	return '';
// }
// app.use(expressViewResolver(app, viewResolver));