public function validatewithId($form, $attributes = null, $clearErrors = true)
 {
     parent::validate($attributes, $clearErrors);
     foreach ($form->questions_group as $group) {
         if ($group->id == $this->id) {
             $this->addError('id', Yii::t('common', 'loginExist'));
         }
     }
     return !$this->hasErrors();
 }