getJSON in CI problem

[eluser]narkaT[/eluser]
there's nothing special about implementing such a
functionality with CI.
Just create a controller that handles the data fetching:

Code:

class Fetchselectboxes extends Controller {
    /*
     * .....
     */

    function fetchjson($id) {
        $data = array();
        //fetch data from DB an prepare it...

        echo json_encode($data);
    }
}

you could then access the data with the following url:

Code:

www.yourdomain.com/fetchselectboxes/fetchjson/<id>

the most work will be done on the client-side, so the server-side
implementation is quite simple

Greetings
Jan