gistfile1.js

app.post('/api/photos', function(req, res) {

    var serverPath = '/images/' + req.files.userPhoto.name;

    require('fs').rename(
	req.files.userPhoto.path,
	'/Users/mark/code/examples/file-upload/upload-example-app/public' + serverPath,
	function(error) {
            if(error) {
		res.send({
                    error: 'Ah crap! Something bad happened'
		});
                return;
            }

            res.send({
		path: serverPath
            });
	}
    );
});