Kohana "One to many."

[obi]

Once again, there's a problem, with one to many, there's empty lines in the table, what could be a problem, maybe someone's been in trouble?

For example: Controller:

$user->educations->user_personal_id = $id;
$user->educations->faculty = "smp";
$user->educations->save();

Model:

 class Model_User_personal extends ORM 
    {
        protected $_has_many = array(
                    'educations' => array(
                        'model' => 'user_education',
                    ),
                    'works' => array(
                        'model' => 'user_work',
                    ),
                );
    }

[Jolied]

ORM has meths add(). Works like this:

$var = ORM::factory('your_model');
// передаём в модель данные
$var->values($data_array);
// сохраняем модель
// при сохранении модель, по умолчанию, возвращает id вставленной строки
try
{
  $var->save()l
} catch (ORM_Validation_Exception $e) {
  // do smth if error
}    
// добавляем в выбранную модель те самые значения по связи
$var->add('alias_name', $value);

/ where alias_name is a communication name and $value is a value