Codeigniter + smarty problem with pass variable template to model

I fix the problem in this way:

MY_Controller.php

PHP Code:

class MY_Controller extends CI_Controller {
        public function __construct(){
                parent::__construct();
                $this->information();
        }
        public function information() {
                $this->load->helper('info');
        }
} 


Model:

PHP Code:

    public function info_site($name) {
        $db = $this->load->database('site', TRUE);
        $db    ->select('value')
                        ->from('arcor_site_setting')
            ->where('name', $name);
        $query_info_view = $db->get('');
        foreach ($query_info_view->result() as $row){
            echo $row->value;
        }
    }
} 


helper:

PHP Code:

function Info($name) {
    $CI = get_instance();
    $CI->load->model('informations');
    $CI->informations->info_site($name);
} 


PHP Code:

{info(name)}