Routing through controller's file name

Before I started learning Node.js I was happy doing my projects with PHP codeigniter. When I learned Node.js, I tried to implement the routing mechanism codeigniter use by looking up controllers file names.

This is how my Node.js app routing is:

app.get('*', function(req, res) {

    // URL string -> array[]
    var url = req.originalUrl.split("/");
    // [0] is always empty
    // [1] is controller
    req.controller =  url[1] || config.defaultController;
    // [2] is method
    req.method =  url[2] || config.defaultMethod;
    // [...] the rest is arguments the forementioned method
    req.args = [];
    for (var i = 3; i <= url.length-1; i++) {
        req.args.push(url[i]);
    }

    // those are the controller files available
    var files = fs.readdirSync("app/controllers");
    // and this is the requested controller file
    var targetController = req.controller + ".js";
    targetController = targetController.toLowerCase();

    // if file exists in arrayy : 200
    if (files.indexOf(targetController) > -1) var method = nk_cRequire(targetController)[req.method]; /*global nk_cRequire*/
    // if file doens't exist in array : 404
    else var method = nk_cRequire("404.js").index;

    // if method is not a function
    if (typeof method != "function") method = nk_cRequire("404.js").index;

    method(req, res, req.args);

    // cheers...
});

Note: the nk_cRequire is just a global method that used to require controllers from the controllers folder.

Creating a file called catpics.js in the app/controllers folder would result in creating www.host.tld/catpics route, and creating a method of showcat in that controller, would result in creating www.host.tld/catpics/showcat route, then every other level will be an argument passed to this route.

This route:

www.host.tld/catpics/showcat/argument1/argument2/argument3

would pass argument1, argument2 and argument3 as arguments to the showcats method in the catpics controller.