Rendering controller to a different view in CakePHP

Is there a way to render a controller to a different view then normal? I'm trying to pass some data from the controller to a non-default view. Meaning my controller is called:

class StocksRealtimeController extends AppController {
    var $uses               = 'StockRealtime';
    function index(){
        $action = '/TestView';
        $this->set('stocksRT', $this->StockRealtime->find('all'));
        //$this -> viewPath = 'Pages';
        $this -> render('/TestView/index');
    }
}

... and My view is in views->TestView->index.ctp

Another question I have is, how to pass that value to a PHP and not a ctp file outside of the CakePHP framework?

I have tried everything from here with no luck.