public function __construct(Speakerinvite $invite)
 {
     $this->id = $invite->getId();
     $this->userId = $invite->getUserId();
     $this->lectureId = $invite->getLectureId();
 }
 private static function update(Speakerinvite $model)
 {
     $db = Db::getInstance(\ConferenceScheduler\Configs\DatabaseConfig::DB_INSTANCE);
     $query = "UPDATE speakerinvites SET userId= :userId, lectureId= :lectureId WHERE id = :id";
     $result = $db->prepare($query);
     $result->execute([':id' => $model->getId(), ':userId' => $model->getUserId(), ':lectureId' => $model->getLectureId()]);
 }