protected function getAllAnswerVariantsGroupByQuestionId($question_list_id)
{
$result = [];
$modelQuestionList = Question::findAll(['list_id' => $question_list_id]);
$ids = array_values(ArrayHelper::map($modelQuestionList, 'id', 'id'));
$answerVariants = AnswerVariant::findAll(['question_id' => $ids]);
foreach ($answerVariants as $answerVariant) {
$result[$answerVariant->question_id][$answerVariant->id] = $answerVariant;
}
return $result;
}
