public function addLecture(LectureInputModel $model) : ServiceResponse
 {
     $lecture = new Lecture($model->getTitle(), $model->getDescription(), $model->getStartDate(), $model->getEndDate(), $model->getConferenceId(), null, null);
     $this->dbContext->getLecturesRepository()->add($lecture);
     $this->dbContext->saveChanges();
     return new ServiceResponse(null, "Lecture created successfully.");
 }
 /**
  * @Method('GET', 'POST')
  * @Route('lectures/add/{integer $conferenceId}')
  * @param LectureInputModel $model
  * @param $conferenceId
  * @return View
  */
 public function add(LectureInputModel $model, integer $conferenceId)
 {
     if (!$model->isValid()) {
         return new View('lectures', 'add', $model);
     }
     $service = new LecturesService($this->dbContext);
     if (HttpContext::getInstance()->isPost()) {
         $result = $service->addLecture($model);
         if (!$result->hasError()) {
             $this->addInfoMessage($result->getMessage());
             $this->redirectToUrl('/conferences/details/' . $conferenceId);
         } else {
             $this->addErrorMessage($result->getMessage());
             $this->redirectToUrl('/conferences/details/' . $conferenceId);
         }
     } else {
         $model = new LectureInputModel();
         $model->setConferenceId($conferenceId);
         return new View('lectures', 'add', $model);
     }
     $result = $service->addLecture($model);
     $this->processResponse($result);
     $this->redirect('conferences', 'own');
 }