public async Task <IActionResult> Create(ModuleCreationViewModel moduleViewModel)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var module = new Module
{
Title = moduleViewModel.Title,
Description = moduleViewModel.Description
};
await _context.Modules.AddAsync(module);
await _context.SaveChangesAsync();
return(RedirectToRoute(new { controller = "Modules", action = "Details", id = module.ModuleId }));
}
public async Task <IActionResult> Create(QuestionCreationViewModel questionViewModel)
{
if (questionViewModel.Answers == null)
{
questionViewModel.Answers = questionViewModel.BinaryAnswers;
}
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var question = new Question
{
ModuleId = questionViewModel.ModuleId,
QuestionType = questionViewModel.QuestionType,
Text = questionViewModel.Text
};
await _context.Questions.AddAsync(question);
var answersList = questionViewModel.Answers
.Select(answerViewModel => new Answer()
{
QuestionId = question.QuestionId,
Text = answerViewModel.Text,
IsValid = answerViewModel.IsValid
})
.ToList();
await _context.Answers.AddRangeAsync(answersList);
await _context.SaveChangesAsync();
return(RedirectToAction("Index"));
}
public async Task <IActionResult> Attempt(ExamAttemptViewModel viewModel)
{
if (viewModel == null)
{
return(BadRequest());
}
viewModel.Exam = await _context.Exams.FirstOrDefaultAsync(e => e.ExamId == viewModel.ExamId);
if (viewModel.ParticipationDate.AddMinutes(viewModel.Exam.Duration) > DateTime.Now)
{
return(BadRequest());
}
var examAttempt = new ExamAttempt
{
ExamId = viewModel.ExamId,
UserId = viewModel.UserId,
ParticipationDate = viewModel.ParticipationDate
};
await _context.ExamAttempts.AddAsync(examAttempt);
await _context.SaveChangesAsync();
foreach (ExamQuestionViewModel question in viewModel.Questions)
{
foreach (ExamAnswerViewModel answer in question.Answers)
{
if (answer.StudentAnswer)
{
var userAnswer = new UserAnswer
{
QuestionId = question.QuestionId,
ExamAttemptId = examAttempt.ExamAttemptId,
AnswerId = answer.AnswerId
};
var realAnswer = await _context.Answers.FirstOrDefaultAsync(a => a.AnswerId == answer.AnswerId);
userAnswer.IsValid = realAnswer.IsValid;
await _context.UserAnswers.AddAsync(userAnswer);
await _context.SaveChangesAsync();
}
}
}
var userAnswers = _context.UserAnswers
.Where(userAnswer => userAnswer.ExamAttemptId.Equals(examAttempt.ExamAttemptId))
.ToList();
examAttempt.Result = (userAnswers.Select(userAnswer => userAnswer.IsValid).Count() / (userAnswers.Count() != 0 ? userAnswers.Count() : 1)) * 100;
var examAttemptData = _context.ExamAttempts.Update(examAttempt);
if (examAttemptData == null)
{
return(NotFound());
}
return(RedirectToAction("Index"));
}