public static EditProblemViewModel GetEditProblemViewModel(Problem problem)
{
var epvm = new EditProblemViewModel();
epvm.Author = problem.Author.UserName;
epvm.Name = problem.Name;
epvm.Text = problem.Text;
epvm.SelectedCategoryId = problem.CategoryId;
epvm.IsBlocked = problem.IsBlocked;
var sb = new StringBuilder();
foreach (var tag in problem.Tags)
{
sb.Append(tag.Name);
sb.Append(',');
}
epvm.TagsString = sb.ToString();
sb.Clear();
foreach (var ans in problem.CorrectAnswers)
{
sb.Append(ans.Text);
sb.Append(';');
}
sb.Remove(sb.Length - 1, 1);
epvm.Answers = sb.ToString();
return epvm;
}
public ActionResult Edit(EditProblemViewModel problemView)
{
if (ModelState.IsValidField("Answers"))
UpdateProblemFromView(problemView);
else
return View(problemView);
problemView.Author = User.Identity.Name;
return RedirectToAction("Index");
}
public void UpdateProblemFromView(EditProblemViewModel problemView)
{
Problem problem = problemRepository.GetByID(problemView.Id);
problem.CategoryId = problemView.SelectedCategoryId;
problem.Name = problemView.Name;
problem.Text = problemView.Text;
problem.IsBlocked = problemView.IsBlocked;
while (problem.CorrectAnswers.Count != 0)
answerRepository.Delete(problem.CorrectAnswers.ElementAt(0));
problem.CorrectAnswers = GetAnswersFromString(problemView.Answers, problem);
problem.Tags = new Collection<Tag>();
problemRepository.Update(problem);
if (!problemView.TagsString.IsNullOrWhiteSpace())
{
foreach (var tag in problemView.TagsString.Split(','))
{
problem.Tags.Add(tagRepository.GetByName(tag));
}
}
problemRepository.Update(problem);
}
public void AddProblemFromView(EditProblemViewModel problemView)
{
var problem = new Problem
{
CategoryId = problemView.SelectedCategoryId,
Name = problemView.Name,
Text = problemView.Text,
AuthorId = UserManager.FindByName(User.Identity.Name).Id,
Tags = new Collection<Tag>(),
IsBlocked = problemView.IsBlocked
};
foreach (var tag in problemView.TagsString.Split(','))
{
problem.Tags.Add(tagRepository.GetByName(tag));
}
problemRepository.Insert(problem);
problem.CorrectAnswers = GetAnswersFromString(problemView.Answers, problem);
problemRepository.Update(problem);
}
