/**
  * Updates an existing Question model.
  * If update is successful, the browser will be redirected to the 'view' page.
  * @param integer $id
  * @param integer $list_id
  * @return mixed
  */
 public function actionUpdate($id, $list_id)
 {
     // Проверяем можем ли изменить вопрос.
     if (!$this->canCreateQuestion($list_id)) {
         return $this->render('question_list_is_lock', ['modelQuestionList' => QuestionList::findOne($list_id), 'action' => 'update']);
     }
     $model = $this->findModel($id);
     $post = Yii::$app->request->post();
     //$model->answerVariants
     //если данные загрузились в объект вопроса и он валиден
     if ($model->load($post) && ($valid = $model->validate())) {
         $transaction = \Yii::$app->db->beginTransaction();
         // Если сохранили успешно объек вопроса
         if ($model->save()) {
             //Если для этого типа нужно сохранять опции
             switch ($model->type) {
                 case 'select_one':
                 case 'select_multiple':
                 case 'radio':
                     $modelsAnswerVariants = [];
                     $deletedAnswerVariantsIDs = array_values(ArrayHelper::map($model->answerVariants, 'id', 'id'));
                     if ($post['AnswerVariant']) {
                         foreach ($post['AnswerVariant'] as $av) {
                             $m = new AnswerVariant();
                             $m->id = $av['id'];
                             $modelsAnswerVariants[] = $m;
                         }
                     }
                     Model::loadMultiple($modelsAnswerVariants, $post);
                     if (!empty($deletedAnswerVariantsIDs)) {
                         AnswerVariant::deleteAll(['id' => $deletedAnswerVariantsIDs]);
                     }
                     foreach ($modelsAnswerVariants as $answerVariantModel) {
                         $answerVariantModel->question_id = $model->id;
                         $valid = $answerVariantModel->save();
                     }
                     if ($valid) {
                         $transaction->commit();
                         return $this->redirect(['view', 'id' => $model->id, 'list_id' => $list_id]);
                     } else {
                         $transaction->rollBack();
                         return $this->render('update', ['model' => $model, 'list_id' => $list_id]);
                     }
                     break;
                 case 'checkbox':
                     $answerVariantModel = $model->answerVariants[0];
                     // если не переданы кол-во балов при установке чек-бокса
                     if (!(int) $post['checkboxUpScores']) {
                         //но они были ранее
                         if ($answerVariantModel) {
                             $answerVariantModel->delete();
                         }
                         break;
                     }
                     if (!$answerVariantModel) {
                         $answerVariantModel = new AnswerVariant();
                         $answerVariantModel->answer = '1';
                         $answerVariantModel->question_id = $model->id;
                     }
                     //а если переданы, то заменяем
                     $answerVariantModel->scores = (int) $post['checkboxUpScores'];
                     $valid = $answerVariantModel->save();
                     break;
                 default:
                     //На тот случай, если сменили тип поля с ВЫБОР ИЗ ВАРИАНТОВ на ТЕКСТ, удаляем варианты ответа
                     AnswerVariant::deleteAll(['id' => array_values(ArrayHelper::map($model->answerVariants, 'id', 'id'))]);
             }
         } else {
             $transaction->rollBack();
         }
         if ($valid) {
             $transaction->commit();
             return $this->redirect(['view', 'id' => $model->id, 'list_id' => $list_id]);
         } else {
             $transaction->rollBack();
             return $this->render('create', ['model' => $model, 'list_id' => $list_id]);
         }
     } else {
         return $this->render('update', ['model' => $model, 'list_id' => $list_id]);
     }
 }
 /**
  * Creates a new QuestionList model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $modelQuestionList = new QuestionList();
     // добавляем в объект класса QuestionList данные, пришедние из формы
     if ($modelQuestionList->load(Yii::$app->request->post())) {
         // создаются
         $modelsQuestion = Model::createMultiple(Question::classname());
         $modelsAnswerVariant = [];
         Model::loadMultiple($modelsQuestion, Yii::$app->request->post());
         $valid = $modelQuestionList->validate();
         $valid = Model::validateMultiple($modelsQuestion) && $valid;
         $postAnswerVariants = Yii::$app->request->post()['AnswerVariant'];
         if (isset($postAnswerVariants[0])) {
             foreach ($postAnswerVariants as $indexQuestion => $answers) {
                 if ($modelsQuestion[$indexQuestion]->type === 'select_one') {
                     foreach ($answers as $indexAnswer => $answer) {
                         $data = [];
                         $data['AnswerVariant'] = $answer;
                         $modelAnswerVariant = new AnswerVariant();
                         $modelAnswerVariant->load($data);
                         $modelsAnswerVariant[$indexQuestion][] = $modelAnswerVariant;
                     }
                 }
             }
         }
         if ($valid) {
             $transaction = \Yii::$app->db->beginTransaction();
             try {
                 if ($flag = $modelQuestionList->save(false)) {
                     foreach ($modelsQuestion as $indexQuestion => $modelQuestion) {
                         if (!($flag = $modelQuestion->save(false))) {
                             $transaction->rollBack();
                             break;
                         } else {
                             $modelQuestion->link('questionLists', $modelQuestionList);
                         }
                         if (isset($modelsAnswerVariant[$indexQuestion]) && is_array($modelsAnswerVariant[$indexQuestion])) {
                             foreach ($modelsAnswerVariant[$indexQuestion] as $modelAnswerVariant) {
                                 if (!$modelAnswerVariant->answer) {
                                     continue;
                                 }
                                 $modelAnswerVariant->question_id = $modelQuestion->id;
                                 if (!($flag = $modelAnswerVariant->save(false))) {
                                     break;
                                 }
                             }
                         }
                     }
                 }
                 if ($flag) {
                     $transaction->commit();
                     return $this->redirect(['view', 'id' => $modelQuestionList->id]);
                 } else {
                     $transaction->rollBack();
                 }
             } catch (Exception $e) {
                 $transaction->rollBack();
             }
         }
     } else {
         return $this->render('create', ['modelQuestionList' => $modelQuestionList, 'modelsQuestion' => empty($modelsQuestions) ? [new Question()] : $modelsQuestions, 'modelsAnswerVariant' => empty($modelsAnswerVariant) ? [[new AnswerVariant()]] : $modelsAnswerVariant]);
     }
 }