public function actionCreateiko()
    {
        $model = new Zayvki;
        $orders = [new Order];

        if ($model->load(Yii::$app->request->post()) && $model->save()) {

            $orders = Model::createMultiple(House::classname());
            Model::loadMultiple($orders, Yii::$app->request->post());

            // validate person and houses models
            $valid = $zayvki->validate();
            $valid = Model::validateMultiple($orders) && $valid;

            if (isset($_POST['Order'][0][0])) {
                foreach ($_POST['Room'] as $indexHouse => $rooms) {
                    foreach ($rooms as $indexRoom => $room) {
                        $data['Room'] = $room;
                        $modelRoom = new Room;
                        $modelRoom->load($data);
                        $modelsRoom[$indexHouse][$indexRoom] = $modelRoom;
                        $valid = $modelRoom->validate();
                    }
                }
            }

            if ($valid) {
                $transaction = Yii::$app->db->beginTransaction();
                try {
                    if ($flag = $modelPerson->save(false)) {
                        foreach ($modelsHouse as $indexHouse => $modelHouse) {

                            if ($flag === false) {
                                break;
                            }

                            $modelHouse->person_id = $modelPerson->id;

                            if (!($flag = $modelHouse->save(false))) {
                                break;
                            }

                            if (isset($modelsRoom[$indexHouse]) && is_array($modelsRoom[$indexHouse])) {
                                foreach ($modelsRoom[$indexHouse] as $indexRoom => $modelRoom) {
                                    $modelRoom->house_id = $modelHouse->id;
                                    if (!($flag = $modelRoom->save(false))) {
                                        break;
                                    }
                                }
                            }
                        }
                    }

                    if ($flag) {
                        $transaction->commit();
                        return $this->redirect(['view', 'id' => $zayvki->id]);
                    } else {
                        $transaction->rollBack();
                    }
                } catch (Exception $e) {
                    $transaction->rollBack();
                }
            }
        }

        return $this->render('createiko', [
            'model' => $model,
            'orders' => (empty($orders)) ? [new Order] : $orders,
        ]);
    }