/**
* Updates an existing QuestionList model.
* If update is successful, the browser will be redirected to the 'view' page.
* @param integer $id
* @return mixed
*/
public function actionUpdate($id)
{
$modelQuestionList = $this->findModel($id);
$modelsQuestion = $modelQuestionList->questions;
$modelsAnswerVariant = [];
$oldAnswerVariants = [];
if (!empty($modelsQuestion)) {
foreach ($modelsQuestion as $indexQuestion => $modelQuestion) {
$answerVariants = $modelQuestion->answerVariants;
$modelsAnswerVariant[$indexQuestion] = $answerVariants;
$oldAnswerVariants = ArrayHelper::merge(ArrayHelper::index($answerVariants, 'id'), $oldAnswerVariants);
}
}
if ($modelQuestionList->load(Yii::$app->request->post())) {
$oldQuestionIDs = ArrayHelper::map($modelsQuestion, 'id', 'id');
$modelsQuestion = [];
$postQuestionData = Yii::$app->request->post()['Question'];
if ($postQuestionData) {
foreach ($postQuestionData as $q) {
$question = new Question();
if ($q['id']) {
$actualIds[$q['id']] = $q['id'];
$question->id = $q['id'];
}
$modelsQuestion[] = $question;
}
}
Model::loadMultiple($modelsQuestion, Yii::$app->request->post());
$deletedQuestionIDs = array_diff($oldQuestionIDs, array_filter(ArrayHelper::map($modelsQuestion, 'id', 'id')));
$valid = $modelQuestionList->validate();
$valid = Model::validateMultiple($modelsQuestion) && $valid;
$answerVariantsIDs = [];
$postAnswersData = Yii::$app->request->post()['AnswerVariant'];
if (isset($postAnswersData[0])) {
foreach ($postAnswersData as $indexQuestion => $answerVariants) {
$answerVariantsIDs = ArrayHelper::merge($answerVariantsIDs, array_filter(ArrayHelper::getColumn($answerVariants, 'id')));
foreach ($answerVariants as $indexAnswerVariant => $answerVariant) {
if (!$answerVariant['answer']) {
continue;
}
$data['AnswerVariant'] = $answerVariant;
$modelAnswerVariant = isset($answerVariant['id']) && isset($oldAnswerVariants[$answerVariant['id']]) ? $oldAnswerVariants[$answerVariant['id']] : new AnswerVariant();
$modelAnswerVariant->load($data);
$modelsAnswerVariant[$indexQuestion][$indexAnswerVariant] = $modelAnswerVariant;
$valid = $modelAnswerVariant->validate();
}
}
}
$oldAnswerVariantsIDs = ArrayHelper::getColumn($oldAnswerVariants, 'id');
$deletedAnswerVariantsIDs = array_diff($oldAnswerVariantsIDs, $answerVariantsIDs);
if ($valid) {
$transaction = \Yii::$app->db->beginTransaction();
try {
if ($flag = $modelQuestionList->save(false)) {
if (!empty($deletedAnswerVariantsIDs)) {
AnswerVariant::deleteAll(['id' => $deletedAnswerVariantsIDs]);
}
if (!empty($deletedQuestionIDs)) {
foreach ($deletedQuestionIDs as $q_id) {
Question::findOne($q_id)->unlink('questionLists', $modelQuestionList);
Question::findOne($q_id)->delete();
}
}
foreach ($modelsQuestion as $indexQuestion => $modelQuestion) {
if ($modelQuestion->id) {
$model = Question::findOne($modelQuestion->id);
$data = $modelQuestion->toArray();
if ($model) {
$model->attributes = $data;
$modelQuestion = $model;
}
}
if (!($flag = $modelQuestion->save())) {
$transaction->rollBack();
break;
}
if (isset($modelsAnswerVariant[$indexQuestion]) && is_array($modelsAnswerVariant[$indexQuestion])) {
foreach ($modelsAnswerVariant[$indexQuestion] as $indexAnswerVariant => $modelAnswerVariant) {
if ($modelsQuestion[$indexQuestion]->type !== 'multiple') {
$modelAnswerVariant->delete();
} else {
$modelAnswerVariant->question_id = $modelQuestion->id;
if (!($flag = $modelAnswerVariant->save(false))) {
break;
}
}
}
}
if (!$actualIds[$modelQuestion->id]) {
$modelQuestion->link('questionLists', $modelQuestionList);
}
}
}
if ($flag) {
$transaction->commit();
return $this->redirect(['view', 'id' => $modelQuestionList->id]);
}
} catch (Exception $e) {
$transaction->rollBack();
}
}
}
return $this->render('update', ['modelQuestionList' => $modelQuestionList, 'modelsQuestion' => empty($modelsQuestion) ? [new Question()] : $modelsQuestion, 'modelsAnswerVariant' => empty($modelsAnswerVariant) ? [[new AnswerVariant()]] : $modelsAnswerVariant]);
}
public function getAnswerVariants()
{
return $this->hasMany(AnswerVariant::className(), ['question_id' => 'id']);
}