Multi level menu from database (parent->child)

[eluser]JimmyJ[/eluser]
I've changed it to

Code:

function get_menu_structure(){
        //$this->db->where('parent',$parent);
        $this->db->order_by('menu_position','asc');
        //$this->db->join('content', 'content.id = content_menus.content_id', 'left');
        $q=$this->db->get('content_menus');
        foreach($q->result() as $r){
            $data[$r->parent][] = $r;
        }
        $menu=$this->build_menu($data);
        return $menu;
    }

But it's still the same error.