public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(array('language_id, name', 'required'), array('language_id', 'numerical', 'integerOnly' => true), array('name', 'length', 'max' => 32), array('stock_status_id, language_id, name', 'safe', 'on' => 'search'));
}