Monitor shows latest attempt of a student for a given quiz

User data is shown as per the question paper/quiz and not all together.
It also shows other attempts for the same question paper.
And then grade user interface is as per question paper if nagivated via
monitor interface.

5 files changed, 53 insertions, 21 deletions

diff --git a/yaksh/templates/yaksh/grade_user.html b/yaksh/templates/yaksh/grade_user.html
index f0d9520..dd05670 100644
--- a/yaksh/templates/yaksh/grade_user.html
+++ b/yaksh/templates/yaksh/grade_user.html
@@ -27,11 +27,16 @@ Institute: {{ data.profile.institute }} <br/>
 
 {% for paper in data.papers %}
 
+{% if forloop.counter == 2 and data.questionpaperid %}
+<hr>
+<u><h2> Previous attempts </h2></u>
+{% endif %}
 {{ paper.total_marks }}
 
 <h2> Quiz: {{ paper.question_paper.quiz.description }} </h2>
 
 <p>
+Attempt Number: {{ paper.attempt_number }}<br/>
 Questions correctly answered: {{ paper.get_answered_str }} <br/>
 Total attempts at questions: {{ paper.answers.count }} <br/>
 Marks obtained: {{ paper.get_total_marks }} <br/>
@@ -56,7 +61,12 @@ Start time: {{ paper.start_time }} <br/>
 
 <h3> Answers </h3><br>
 <form name=frm id="q{{ paper.quiz.id }}_form"
-    action="{{URL_ROOT}}/exam/manage/gradeuser/{{data.user.username}}/" method="post">
+    {% if data.questionpaperid %}
+    action="{{URL_ROOT}}/exam/manage/gradeuser/{{data.user.username}}/{{data.questionpaperid}}/"
+    {% else %}
+    action="{{URL_ROOT}}/exam/manage/gradeuser/{{data.user.username}}/"
+    {% endif %}
+    method="post">
 {% csrf_token %}
 {% for question, answers in paper.get_question_answers.items %}
 
diff --git a/yaksh/templates/yaksh/monitor.html b/yaksh/templates/yaksh/monitor.html
index 7df0569..ecb8b42 100644
--- a/yaksh/templates/yaksh/monitor.html
+++ b/yaksh/templates/yaksh/monitor.html
@@ -38,7 +38,6 @@
 {% if quiz %}
 
 {% if papers %}
-{# <p> Quiz: {{ quiz_name }}</p> #}
 <p>Number of papers: {{ papers|length }} </p>
 <table border="1" cellpadding="3">
     <tr>
@@ -51,10 +50,10 @@
     <th> Attempts </th>
     <th> Status </th>
     </tr>
-    {% for paper in papers %}
+    {% for paper in latest_attempts %}
     <tr> 
-        <td> <a href="{{URL_ROOT}}/exam/manage/user_data/{{paper.user.username}}">{{ paper.user.get_full_name.title }}</a> </td>
-        <td> <a href="{{URL_ROOT}}/exam/manage/user_data/{{paper.user.username}}">{{ paper.user.username }}</a> </td>
+        <td> <a href="{{URL_ROOT}}/exam/manage/user_data/{{paper.user.username}}/{{paper.question_paper.id}}">{{ paper.user.get_full_name.title }}</a> </td>
+        <td> {{ paper.user.username }} </td>
         <td> {{ paper.user.profile.roll_number }} </td>
         <td> {{ paper.user.profile.institute }} </td>
         <td> {{ paper.get_answered_str }} </td> 
diff --git a/yaksh/templates/yaksh/user_data.html b/yaksh/templates/yaksh/user_data.html
index 61a3a97..3350763 100644
--- a/yaksh/templates/yaksh/user_data.html
+++ b/yaksh/templates/yaksh/user_data.html
@@ -21,15 +21,24 @@ Last login: {{ data.user.last_login }}
 </p>
 
 {% if data.papers %}
-<p><a href="{{URL_ROOT}}/exam/manage/gradeuser/{{ data.user.username }}/">
+{% if data.questionpaperid %}
+<p><a href="{{URL_ROOT}}/exam/manage/gradeuser/{{ data.user.username }}/{{ data.questionpaperid }}">
     Grade/correct paper</a>
 </p>
+{% else %}
+<p><a href="{{URL_ROOT}}/exam/manage/gradeuser/{{ data.user.username }}">
+    Grade/correct paper</a>
+{% endif %}
 
 {% for paper in data.papers %}
-
-<h2> Quiz: {{ paper.quiz.description }} </h2>
+{% if forloop.counter == 2 and data.questionpaperid %}
+<hr>
+<U><h2> Previous attempts </h2></U>
+{% endif %}
+<h2> Quiz: {{ paper.question_paper.quiz.description }} </h2>
 
 <p>
+Attempt Number: {{ paper.attempt_number }}<br/>
 Questions correctly answered: {{ paper.get_answered_str }} <br/>
 Total attempts at questions: {{ paper.answers.count }} <br/>
 Marks obtained: {{ paper.get_total_marks }} <br/>
diff --git a/yaksh/urls.py b/yaksh/urls.py
index 66159f0..61222b8 100644
--- a/yaksh/urls.py
+++ b/yaksh/urls.py
@@ -28,6 +28,8 @@ urlpatterns = patterns('yaksh.views',
     url(r'^manage/editquestion/$', 'edit_question'),
     url(r'^manage/addquiz/(?P<quiz_id>\d+)/$', 'add_quiz'),
     url(r'^manage/gradeuser/$', 'show_all_users'),
+    url(r'^manage/gradeuser/(?P<username>.*)/(?P<questionpaper_id>\d+)/$',
+        'grade_user'),
     url(r'^manage/gradeuser/(?P<username>.*)/$', 'grade_user'),
     url(r'^manage/questions/$', 'show_all_questions'),
     url(r'^manage/showquiz/$', 'show_all_quiz'),
@@ -36,6 +38,8 @@ urlpatterns = patterns('yaksh.views',
     url(r'^manage/showquestionpapers/(?P<questionpaper_id>\d+)/$',\
                                                     'show_all_questionpapers'),
     url(r'^manage/monitor/(?P<questionpaper_id>\d+)/$', 'monitor'),
+    url(r'^manage/user_data/(?P<username>.*)/(?P<questionpaper_id>\d+)/$',
+        'user_data'),
     url(r'^manage/user_data/(?P<username>.*)/$', 'user_data'),
     url(r'^manage/designquestionpaper/$', 'design_questionpaper'),
     url(r'^manage/designquestionpaper/(?P<questionpaper_id>\d+)/$',\
diff --git a/yaksh/views.py b/yaksh/views.py
index 5c81eb8..755b33b 100644
--- a/yaksh/views.py
+++ b/yaksh/views.py
@@ -10,7 +10,7 @@ from django.contrib.auth import login, logout, authenticate
 from django.shortcuts import render_to_response, get_object_or_404, redirect
 from django.template import RequestContext
 from django.http import Http404
-from django.db.models import Sum
+from django.db.models import Sum, Max
 from django.views.decorators.csrf import csrf_exempt
 from django.contrib.auth.decorators import login_required
 from taggit.models import Tag
@@ -1188,20 +1188,30 @@ def monitor(request, questionpaper_id=None):
         papers = []
         q_paper = None
     else:
-        papers = AnswerPaper.objects.filter(question_paper=q_paper).annotate(
-            total=Sum('answers__marks')).order_by('-total')
-
-    context = {'papers': papers, 'quiz': q_paper, 'quizzes': None}
+        latest_attempts = []
+        papers = AnswerPaper.objects.filter(question_paper=q_paper).order_by(
+                'user__profile__roll_number')
+        users = papers.values_list('user').distinct()
+        for auser in users:
+            last_attempt = papers.filter(user__in=auser).aggregate(
+                    last_attempt_num=Max('attempt_number'))
+            latest_attempts.append(papers.get(user__in=auser,
+                attempt_number=last_attempt['last_attempt_num']))
+    context = {'papers': papers, 'quiz': q_paper, 'quizzes': None,
+            'latest_attempts': latest_attempts,}
     return my_render_to_response('yaksh/monitor.html', context,
                                  context_instance=ci)
 
 
-def get_user_data(username):
+def get_user_data(username, questionpaper_id=None):
     """For a given username, this returns a dictionary of important data
     related to the user including all the user's answers submitted.
     """
     user = User.objects.get(username=username)
     papers = AnswerPaper.objects.filter(user=user)
+    if questionpaper_id is not None:
+        papers = papers.filter(question_paper_id=questionpaper_id).order_by(
+                '-attempt_number')
 
     data = {}
     try:
@@ -1212,6 +1222,7 @@ def get_user_data(username):
     data['user'] = user
     data['profile'] = profile
     data['papers'] = papers
+    data['questionpaperid'] = questionpaper_id
     return data
 
 
@@ -1393,14 +1404,14 @@ def show_all_questions(request):
 
 
 @login_required
-def user_data(request, username):
+def user_data(request, username, questionpaper_id=None):
     """Render user data."""
 
     current_user = request.user
     if not current_user.is_authenticated() or not is_moderator(current_user):
         raise Http404('You are not allowed to view this page!')
 
-    data = get_user_data(username)
+    data = get_user_data(username, questionpaper_id)
 
     context = {'data': data}
     return my_render_to_response('yaksh/user_data.html', context,
@@ -1408,7 +1419,7 @@ def user_data(request, username):
 
 
 @login_required
-def grade_user(request, username):
+def grade_user(request, username, questionpaper_id=None):
     """Present an interface with which we can easily grade a user's papers
     and update all their marks and also give comments for each paper.
     """
@@ -1416,18 +1427,17 @@ def grade_user(request, username):
     ci = RequestContext(request)
     if not current_user.is_authenticated() or not is_moderator(current_user):
         raise Http404('You are not allowed to view this page!')
-
-    data = get_user_data(username)
+    data = get_user_data(username, questionpaper_id)
     if request.method == 'POST':
         papers = data['papers']
         for paper in papers:
             for question, answers in paper.get_question_answers().iteritems():
-                marks = float(request.POST.get('q%d_marks' % question.id))
+                marks = float(request.POST.get('q%d_marks' % question.id, 0))
                 last_ans = answers[-1]
                 last_ans.marks = marks
                 last_ans.save()
             paper.comments = request.POST.get(
-                'comments_%d' % paper.question_paper.id)
+                'comments_%d' % paper.question_paper.id, 'No comments')
             paper.save()
 
         context = {'data': data}