On skip or navigation, the user answer will be saved.

Added boolean field in Answer model to check whether the
answered is skipped or not.

3 files changed, 58 insertions, 6 deletions

diff --git a/testapp/exam/models.py b/testapp/exam/models.py
index ebf1018..72fb51b 100644
--- a/testapp/exam/models.py
+++ b/testapp/exam/models.py
@@ -106,6 +106,9 @@ class Answer(models.Model):
     # Is the answer correct.
     correct = models.BooleanField(default=False)
 
+    # Whether skipped or not.
+    skipped = models.BooleanField(default=False)
+
     def __unicode__(self):
         return self.answer
 
diff --git a/testapp/exam/templates/exam/question.html b/testapp/exam/templates/exam/question.html
index 57bfd53..eac6792 100644
--- a/testapp/exam/templates/exam/question.html
+++ b/testapp/exam/templates/exam/question.html
@@ -64,6 +64,13 @@ function validate(){
     }
 }
 
+function call_skip(url)
+{
+    form = document.forms["code"]
+    form.action = url
+    form.submit();
+}
+
 </script>
 {% endblock script %}
 
@@ -97,17 +104,18 @@ function validate(){
      </div>
    </div>
 </div>
+
 <div class = container>
-<div class="sidebar">
+  <div class="sidebar">
     <p>Question Navigator </p>
     <div class="pagination">
         <ul>
             {% for qid, num in questions.items %}
                 {% if qid in to_attempt %}
                     {% if qid == question.id|slugify %}
-                        <li class="active"><a href="{{ URL_ROOT }}/exam/{{ qid }}/{{ paper.attempt_number }}/{{ paper.question_paper.id }}/">{{ num }}</a></li>
+                        <li class="active"><a href="#" onclick="call_skip('{{ URL_ROOT }}/exam/{{ qid }}/{{ paper.attempt_number }}/{{ paper.question_paper.id }}/')">{{ num }}</a></li>
                     {% else %}
-                        <li><a href="{{ URL_ROOT }}/exam/{{ qid }}/{{ paper.attempt_number }}/{{ paper.question_paper.id }}/">{{ num }}</a></li>
+                        <li><a href="#" onclick="call_skip('{{ URL_ROOT }}/exam/{{ qid }}/{{ paper.attempt_number }}/{{ paper.question_paper.id }}/')">{{ num }}</a></li>
                     {% endif %}
                 {% endif %}
                 {% if qid in submitted %}
@@ -116,7 +124,7 @@ function validate(){
             {% endfor %}
         </ul>
     </div>
-</div>
+  </div>
 </div>
 
      <h4><u> {{ question.summary }} </u><font class=pull-right>(Marks : {{ question.points }}) </font></h4><br>
@@ -132,7 +140,9 @@ function validate(){
          <p id="status"></p>
 
          <form id="code" action="{{URL_ROOT}}/exam/{{ question.id }}/check/{{ paper.attempt_number }}/{{ paper.question_paper.id }}/" method="post" enctype="multipart/form-data">
-         {% csrf_token %}
+             {% csrf_token %}
+             <input type=hidden name="question_id" id="question_id" value={{ question.id }}></input>
+
          {% if question.type == "mcq" %}
          {% for option in question.options.strip.splitlines %}
          <input name="answer" type="radio" value="{{option}}" />{{option}} <br/>
diff --git a/testapp/exam/views.py b/testapp/exam/views.py
index bfac15f..4165b7f 100644
--- a/testapp/exam/views.py
+++ b/testapp/exam/views.py
@@ -756,6 +756,10 @@ def question(request, q_id, attempt_num, questionpaper_id, success_msg=None):
                    'user': user, 'quiz_name': quiz_name, 'time_left': time_left,
                    'success_msg': success_msg, 'to_attempt': to_attempt,
                    'submitted': submitted}
+    if q.type == 'code':
+        skipped_answer = paper.answers.filter(question=q, skipped=True)
+        if skipped_answer:
+            context['last_attempt'] = skipped_answer[0].answer
     ci = RequestContext(request)
     return my_render_to_response('exam/question.html', context,
                                  context_instance=ci)
@@ -763,6 +767,19 @@ def question(request, q_id, attempt_num, questionpaper_id, success_msg=None):
 
 def show_question(request, q_id, attempt_num, questionpaper_id, success_msg=None):
     """Show a question if possible."""
+    user = request.user
+    q_paper = QuestionPaper.objects.get(id=questionpaper_id)
+    paper = AnswerPaper.objects.get(user=request.user, attempt_number=attempt_num,
+            question_paper=q_paper)
+    if not user.is_authenticated() or paper.end_time < datetime.datetime.now():
+        return my_redirect('/exam/login/')
+    old_qid = request.POST.get('question_id')
+    if old_qid is not None:
+        quest = Question.objects.get(pk=old_qid)
+        user_code = request.POST.get('answer')
+        if  quest.type == 'code':
+            old_skipped = paper.answers.filter(question=quest, skipped=True)
+            _save_skipped_answer(old_skipped, user_code, paper, quest)
     if len(q_id) == 0:
         msg = 'Congratulations!  You have successfully completed the quiz.'
         return complete(request, msg, attempt_num, questionpaper_id)
@@ -770,6 +787,21 @@ def show_question(request, q_id, attempt_num, questionpaper_id, success_msg=None
         return question(request, q_id, attempt_num, questionpaper_id, success_msg)
 
 
+def _save_skipped_answer(old_skipped, user_answer, paper, question):
+    """
+        Saves the answer on skip. Only the code questions are saved.
+        Snippet is not saved with the answer.
+    """
+    if old_skipped:
+        skipped_answer = old_skipped[0]
+        skipped_answer.answer=user_answer
+        skipped_answer.save()
+    else:
+        skipped_answer = Answer(question=question, answer=user_answer,
+            correct=False, skipped=True)
+        skipped_answer.save()
+        paper.answers.add(skipped_answer)
+
 def check(request, q_id, attempt_num=None, questionpaper_id=None):
     """Checks the answers of the user for particular question"""
 
@@ -781,10 +813,14 @@ def check(request, q_id, attempt_num=None, questionpaper_id=None):
         return my_redirect('/exam/login/')
     question = get_object_or_404(Question, pk=q_id)
     snippet_code = request.POST.get('snippet')
+    user_code = request.POST.get('answer')
     skip = request.POST.get('skip', None)
     success_msg = False
     success = True
     if skip is not None:
+        if  question.type == 'code':
+            old_skipped = paper.answers.filter(question=question, skipped=True)
+            _save_skipped_answer(old_skipped, user_code, paper, question)
         next_q = paper.skip()
         return show_question(request, next_q, attempt_num, questionpaper_id)
 
@@ -804,7 +840,6 @@ def check(request, q_id, attempt_num=None, questionpaper_id=None):
         assign.save()
         user_answer = 'ASSIGNMENT UPLOADED'
     else:
-        user_code = request.POST.get('answer')
         user_answer = snippet_code + "\n" + user_code
 
     new_answer = Answer(question=question, answer=user_answer,
@@ -838,6 +873,10 @@ def check(request, q_id, attempt_num=None, questionpaper_id=None):
             reason = 'The quiz has been deactivated!'
             return complete(request, reason, attempt_num, questionpaper_id)
         questions, to_attempt, submitted = get_questions(paper)
+        old_answer = paper.answers.filter(question=question, skipped=True)
+        if old_answer:
+            old_answer[0].answer = user_code
+            old_answer[0].save()
         context = {'question': question, 'questions': questions,
                    'error_message': err_msg,
                    'paper': paper, 'last_attempt': user_code,