/**
  * Set operations printed letter state.
  */
 public function actionConfirmPrinted()
 {
     Audit::add('waiting list', 'confirm');
     foreach ($_POST['operations'] as $operation_id) {
         if ($operation = Element_OphTrOperationbooking_Operation::Model()->findByPk($operation_id)) {
             if (Yii::app()->user->checkAccess('admin') and isset($_POST['adminconfirmto']) and $_POST['adminconfirmto'] != 'OFF' and $_POST['adminconfirmto'] != '') {
                 $operation->confirmLetterPrinted($_POST['adminconfirmto'], $_POST['adminconfirmdate']);
             } else {
                 $operation->confirmLetterPrinted();
             }
         }
     }
 }