public void UpdateOpen(StudentExamAnswerOpen entity, StudentExamAnswerOpen dbEntity)
{
dbEntity.Question = entity.Question;
dbEntity.StudentExam = entity.StudentExam;
dbEntity.Answer = entity.Answer;
_eevaContext.SaveChanges();
}
//Add a StudentExamAnswer
public IActionResult Answer(int id)
{
try
{
int?studentExamId = (int)TempData["studentExamId"];
StudentExam studentExam = _studentExamManager.Get(studentExamId);
Question question = studentExam.Exam.ExamQuestions.ElementAt(id - 1);
ExamQuestionViewModel examQuestionViewModel = NewExamQuestionViewModel(studentExam, question, id);
//Checking which type of question it is
if (question is QuestionOpen)
{
examQuestionViewModel.QuestionOpen = _questionManager.GetOpen(question.Id);
StudentExamAnswerOpen studentExamAnswerOpen = _studentExamAnswerManager.GetByStudentExamAndQuestionOpen(studentExam.Id, question.Id);
if (studentExamAnswerOpen != null)
{
examQuestionViewModel.Answer = studentExamAnswerOpen.Answer;
}
}
else if (question is QuestionMultipleChoice)
{
examQuestionViewModel.QuestionMultipleChoice = _questionManager.GetMultipleChoice(question.Id);
StudentExamAnswerMultipleChoice studentExamAnswer = _studentExamAnswerManager.GetByStudentExamAndQuestionMultiple(studentExam.Id, question.Id);
if (studentExamAnswer != null)
{
List <int> answers = new List <int>();
answers.Add(studentExamAnswer.Answer.Id);
examQuestionViewModel.Answers = answers;
}
}
else
{
return(NotFound());
}
TempData["studentExamId"] = studentExam.Id;
return(View(examQuestionViewModel));
}
catch (Exception)
{
return(NotFound());
}
}
public IActionResult Answer(int id, string submit, [Bind("Question,Answer,Answers")] ExamQuestionViewModel examQuestionViewModel)
{
try
{
int studentExamId = (int)TempData["studentExamId"];
StudentExam studentExam = _studentExamManager.Get(studentExamId);
Question question = studentExam.Exam.ExamQuestions.ElementAt(id - 1);
//Checking which type of question it is
if (question is QuestionOpen)
{
StudentExamAnswerOpen so = _studentExamAnswerManager.GetByStudentExamAndQuestionOpen(studentExamId, question.Id);
StudentExamAnswerOpen studentExamAnswerOpen =
new StudentExamAnswerOpen(
_questionManager.GetOpen(question.Id),
studentExam,
examQuestionViewModel.Answer
);
if (so == null)
{
_studentExamAnswerManager.Add(studentExamAnswerOpen);
}
else
{
_studentExamAnswerManager.UpdateOpen(studentExamAnswerOpen, so);
}
}
else if (question is QuestionMultipleChoice)
{
StudentExamAnswerMultipleChoice sc = _studentExamAnswerManager.GetByStudentExamAndQuestionMultiple(studentExamId, question.Id);
StudentExamAnswerMultipleChoice studentExamAnswerMultipleChoice =
new StudentExamAnswerMultipleChoice(
_questionManager.GetMultipleChoice(question.Id),
studentExam,
_answerMultipleChoiceManager.Get(examQuestionViewModel.Answers.FirstOrDefault())
);
if (sc == null)
{
_studentExamAnswerManager.Add(studentExamAnswerMultipleChoice);
}
else
{
_studentExamAnswerManager.UpdateMultiple(studentExamAnswerMultipleChoice, sc);
}
}
else
{
return(NotFound());
}
TempData["studentExamId"] = studentExam.Id;
//Checking which type of submit button is used
switch (submit)
{
case "Save and back to list":
return(RedirectToAction(nameof(Index)));
case "Next":
int increase = id + 1;
return(RedirectToAction("Answer", "ExamQuestion", new { id = increase }));
case "Previous":
int decrease = id - 1;
return(RedirectToAction("Answer", "ExamQuestion", new { id = decrease }));
default:
return(NotFound());
}
}
catch (Exception)
{
return(NotFound());
}
}
