Tally votes, cache results and allow for publication/depublication

elections/migrations/0004_option_nb_votes.py

@@ -0,0 +1,20 @@
+# Generated by Django 2.2.17 on 2020-12-19 16:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("elections", "0003_auto_20201218_1954"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="option",
+            name="nb_votes",
+            field=models.PositiveSmallIntegerField(
+                default=0, verbose_name="nombre de votes reçus"
+            ),
+        ),
+    ]

elections/migrations/0005_question_max_votes.py

@@ -0,0 +1,20 @@
+# Generated by Django 2.2.17 on 2020-12-19 17:19
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("elections", "0004_option_nb_votes"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="question",
+            name="max_votes",
+            field=models.PositiveSmallIntegerField(
+                default=0, verbose_name="nombre maximal de votes reçus"
+            ),
+        ),
+    ]

elections/models.py

@@ -29,6 +29,10 @@ class Question(models.Model):
         Election, related_name="questions", on_delete=models.CASCADE
     )
     text = models.TextField(_("question"), blank=False)
+    # We cache the maximum number of votes for an option
+    max_votes = models.PositiveSmallIntegerField(
+        _("nombre maximal de votes reçus"), default=0
+    )
 
 
 class Option(models.Model):
@@ -40,3 +44,5 @@ class Option(models.Model):
         User,
         related_name="votes",
     )
+    # For now, we store the amount of votes received after the election is tallied
+    nb_votes = models.PositiveSmallIntegerField(_("nombre de votes reçus"), default=0)

elections/templates/elections/election_admin.html

@@ -47,13 +47,17 @@
       {% else %}
 
       {# Lien pour la publication des résultats #}
-      <a class="button is-light is-outlined is-primary" href="{% url 'election.publish' election.pk %}">
+      <a class="button is-outlined is-primary" href="{% url 'election.publish' election.pk %}">
         <span class="icon">
           <i class="fas fa-edit"></i>
         </span>
         &nbsp;
+        {% if not election.results_public %}
         {% trans "Publier" %}
-      </a>
+        {% else %}
+        {% trans "Dépublier" %}
+        {% endif %}
+      </a>&nbsp;
 
       {# Lien pour l'archivage #}
       <a class="button is-light is-outlined is-primary" href="{% url 'election.archive' election.pk %}">
@@ -116,8 +120,12 @@
         </a>
       </div>&nbsp;&nbsp;
       {% elif election.tallied %}
-      <span class="tag is-primary">
-      </span>
+      <span class="tag {% if o.nb_votes == q.max_votes %}is-success{% else %}is-primary{% endif %}">
+        <span class="icon">
+          <i class="fas fa-vote-yea"></i>
+        </span>&nbsp;
+        {{ o.nb_votes }}
+      </span>&nbsp;&nbsp;
       {% endif %}
       {{ o.text }}
     </div>

elections/urls.py

@@ -8,7 +8,9 @@ urlpatterns = [
     path("update/<int:pk>", views.ElectionUpdateView.as_view(), name="election.update"),
     path("tally/<int:pk>", views.ElectionTallyView.as_view(), name="election.tally"),
     path(
-        "publish/<int:pk>", views.ElectionPublishView.as_view(), name="election.publish"
+        "publish/<int:pk>",
+        views.ElectionChangePublicationView.as_view(),
+        name="election.publish",
     ),
     path(
         "archive/<int:pk>", views.ElectionArchiveView.as_view(), name="election.archive"

elections/views.py

@@ -50,28 +50,60 @@ class ElectionUpdateView(SuccessMessageMixin, UpdateView):
 
 class ElectionTallyView(SuccessMessageMixin, SingleObjectMixin, RedirectView):
     model = Election
+    pattern_name = "election.admin"
+
+    def get_queryset(self):
+        return super().get_queryset().prefetch_related("questions__options")
 
     def get(self, request, *args, **kwargs):
         election = self.get_object()
-        election.update(tallied=True)
+        options, questions = [], []
+        for q in election.questions.all():
+            max_votes = 0
+            for o in q.options.all():
+                o.nb_votes = o.voters.count()
+                max_votes = max(max_votes, o.nb_votes)
+                options.append(o)
+
+            q.max_votes = max_votes
+            questions.append(q)
+
+        Option.objects.bulk_update(options, ["nb_votes"])
+        Question.objects.bulk_update(questions, ["max_votes"])
+        election.tallied = True
+        election.save()
+        messages.success(request, _("Élection dépouillée avec succès !"))
         return super().get(request, *args, **kwargs)
 
 
-class ElectionPublishView(SuccessMessageMixin, SingleObjectMixin, RedirectView):
+class ElectionChangePublicationView(
+    SuccessMessageMixin, SingleObjectMixin, RedirectView
+):
     model = Election
+    pattern_name = "election.admin"
 
     def get(self, request, *args, **kwargs):
         election = self.get_object()
-        election.update(tallied=True)
+        election.results_public = not election.results_public
+        election.save()
+        messages.success(
+            request,
+            _("Élection publiée avec succès !")
+            if election.results_public
+            else _("Élection dépubliée avec succès !"),
+        )
         return super().get(request, *args, **kwargs)
 
 
 class ElectionArchiveView(SuccessMessageMixin, SingleObjectMixin, RedirectView):
     model = Election
+    pattern_name = "election.admin"
 
     def get(self, request, *args, **kwargs):
         election = self.get_object()
-        election.update(tallied=True)
+        election.archived = True
+        election.save()
+        messages.success(request, _("Élection archivée avec succès !"))
         return super().get(request, *args, **kwargs)