Item_Ticket::canCreateItem PHP Méthode

    function canCreateItem()
    {
        $ticket = new Ticket();
        // Not item linked for closed tickets
        if ($ticket->getFromDB($this->fields['tickets_id']) && in_array($ticket->fields['status'], $ticket->getClosedStatusArray())) {
            return false;
        }
        return parent::canCreateItem();
    }