public function saveExamType($exam)
{
$exam_type = $this->exam_type;
foreach ($exam_type as $value) {
$model = new ExamType();
$model->name = $value;
$model->exam_id = $exam->id;
$res = ExamType::findOne(['name' => $value, 'exam_id' => $exam->id]);
if ($model->validate()) {
if (empty($res)) {
$model->save();
}
} else {
foreach ($model->errors as $key => $value) {
$this->addError($key, $model->getFirstError($key));
}
}
}
return $model;
}
