/// <summary>
/// Executes the default behavior for saving an aswer.
/// </summary>
/// <param name="savedAnswer"></param>
/// <param name="answer"></param>
/// <param name="repository"></param>
/// <param name="question"></param>
/// <param name="insert"></param>
/// <param name="update"></param>
private void SaveAnswer(Answer savedAnswer, AnswerModelViewBase answer, IRepository repository, Domain.Question question, Func <IRepository, AnswerQuestionOption> insert, Func <IRepository, AnswerQuestionOption, bool> update)
{
// If it came until here, we know that it is likely to be a valid request
savedAnswer.AnsweredAt = DateTime.Now; //Changing to know the last time the user answered
// Loading the last option that the user selected
AnswerQuestionOption answerOption = null;
if (savedAnswer.Answers != null)
{
answerOption = savedAnswer.Answers.FirstOrDefault(r => r.Question.Id == answer.Question.Id);
}
else
{
savedAnswer.Answers = new List <AnswerQuestionOption>();
}
// If it is null, means that the user have not answered the question yet
if (answerOption == null)
{
answerOption = insert(repository);
answerOption.Question = question;
savedAnswer.Answers.Add(answerOption);
}
else
{
update(repository, answerOption);
}
repository.SaveChanges();
}
/// <summary>
/// Auxiliar method for getting the persisted answer for a quiz application and determined question.
/// </summary>
/// <param name="repository"></param>
/// <param name="answer"></param>
/// <param name="idQuestion"></param>
/// <returns></returns>
private AnswerModelViewBase CreateInfoAnswer(IRepository repository,
Answer answer, int idQuestion)
{
AnswerQuestionOption infoAnswer = repository.GetAnswerQuestionOptionByQuestioId(answer.Id, idQuestion);
if (infoAnswer != null)
{
AnswerModelViewBase returnAnswer = CreateAnswerModelView(repository, answer, idQuestion, infoAnswer);
if (returnAnswer != null)
{
returnAnswer.Id = infoAnswer.Id;
return(returnAnswer);
}
}
return(null);
}
