added correct field to user_answer, revert utf8 fix

utf8 does not seem to make troubles on windows, testing this on linux

tkupek_elearning/elearning/models.py

@@ -16,7 +16,7 @@ class Setting(models.Model):
     logo = models.CharField(max_length=256, null=True)
     active = models.BooleanField(unique=True, default=False)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.title
 
 
@@ -26,17 +26,16 @@ class Question(models.Model):
     text = models.TextField(null=True)
     explanation = models.TextField(null=True)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.title
 
 
-
 class Option(models.Model):
     text = models.CharField(max_length=100, null=True)
     correct = models.BooleanField(null=False, default=False)
     question = models.ForeignKey(Question, on_delete=models.CASCADE, null=False)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.text
 
 
@@ -50,15 +49,16 @@ class User(models.Model):
     name = models.CharField(max_length=100, null=False)
     last_seen = models.DateTimeField(null=True)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.name
 
 
 class UserAnswer(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE, null=False)
     question = models.ForeignKey(Question, on_delete=models.CASCADE, null=False)
+    correct = models.NullBooleanField(null=True)
 
-    def __unicode__(self):
+    def __str__(self):
         return str(self.user) + " - " + str(self.question)
 
     class Meta:

tkupek_elearning/elearning/templates/statistic.html

@@ -42,11 +42,15 @@
         <tr class="table_headline">
             <td>title</td>
             <td>answers</td>
+            <td>correct</td>
+            <td>correct percentage</td>
         </tr>
         {% for question in questions %}
         <tr>
             <td>{{ question.title }}</td>
             <td>{{ question.answers }}</td>
+            <td>{{ question.correct_answers }}</td>
+            <td>{{ question.correct_answers_percentage }}</td>
         </tr>
         {% endfor %}
     </table>

tkupek_elearning/elearning/views.py

@@ -60,12 +60,33 @@ def get_answer(request):
         user = User.objects.get(token=request_token)
         log_last_seen(user)
 
+        correct_options = Option.objects.filter(question=question.id, correct=True)
+        correct_option_checklist = []
+        for option in correct_options:
+            correct_option_checklist.append(option.id)
+
+        options_id = []
+        for option in correct_options:
+            options_id.append(option.id)
+        options_id = json.dumps(options_id)
+
         user_answer = get_user_answer(question, user)
 
         if user_answer is None:
+            correct = False
+
             user_answer = UserAnswer()
             user_answer.question = question
             user_answer.user = user
+
+            for option in request_answers:
+                if option in correct_option_checklist:
+                    correct_option_checklist.remove(option)
+
+            if len(correct_option_checklist) is 0:
+                correct = True
+
+            user_answer.correct = correct
             user_answer.save()
 
             for option in request_answers:
@@ -74,13 +95,6 @@ def get_answer(request):
                 user_answer_options.option = Option.objects.get(id=option)
                 user_answer_options.save()
 
-        options = Option.objects.filter(question=question.id, correct=True)
-
-        options_id = []
-        for option in options:
-            options_id.append(option.id)
-        options_id = json.dumps(options_id)
-
         return HttpResponse(options_id)
 
 
@@ -109,5 +123,7 @@ def statistic(request):
     questions = Question.objects.all()
     for question in questions:
         question.answers = UserAnswer.objects.filter(question=question.id).count()
+        question.correct_answers = UserAnswer.objects.filter(question=question.id, correct=True).count()
+        question.correct_answers_percentage = question.correct_answers / question.answers
 
     return render_to_response('statistic.html', {'settings': settings, 'users': users, 'questions': questions})