CodeIgniter + ExtJS 2.2 ? Tutorial?

[eluser]Mirage[/eluser]
Here's a compact example of how I put these things in my controllers:

Code:

function loadProperties() {
        $obj=new stdClass();
        try {
            $this->load->model('AbstractsModel','',true);
            $obj->data=$this->AbstractsModel->getProperties($_POST['id']);
        } catch (Exception $e) {
            $obj->success=false;
        }
        echo json_encode($obj);
    }