Listing 22.2. Zmodyfikowana klasa Application_Model_DbTable_Kontynent
class Application_Model_DbTable_Kontynent extends Zend_Db_Table_Abstract
{
    ...

    public function findOneBySlug($slug)
    {
        $select  = $this->select()->where('slug = ?', $slug);
        return $this->fetchRow($select);
    }

}