Passing From Controller To Index.php

I have Site Controller: which gives the actionIndex the $data on index.php

$this->render('index', $data);

But how can I use actionCrtinfo without rendering index, but only pass the data to index.php?

NOTE: Crtinfo by the way is act upon an AjaxButton OR AjaxLink

Don’t take me wrong but… why would you want to send data to a view file if you will never load/render it?!