On utilise un modèle custom pour les votes

elections/migrations/0009_auto_20210318_1441.py

@@ -0,0 +1,57 @@
+# Generated by Django 2.2.19 on 2021-03-18 13:41
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("elections", "0008_question_voters"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Vote",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+            ],
+        ),
+        migrations.RemoveField(
+            model_name="option",
+            name="voters",
+        ),
+        migrations.AddField(
+            model_name="option",
+            name="voters",
+            field=models.ManyToManyField(
+                blank=True,
+                related_name="votes",
+                through="elections.Vote",
+                to=settings.AUTH_USER_MODEL,
+            ),
+        ),
+        migrations.AddField(
+            model_name="vote",
+            name="option",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE, to="elections.Option"
+            ),
+        ),
+        migrations.AddField(
+            model_name="vote",
+            name="user",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL
+            ),
+        ),
+    ]

elections/models.py

@@ -81,6 +81,7 @@ class Option(models.Model):
     voters = models.ManyToManyField(
         settings.AUTH_USER_MODEL,
         related_name="votes",
+        through="Vote",
     )
     # For now, we store the amount of votes received after the election is tallied
     nb_votes = models.PositiveSmallIntegerField(_("nombre de votes reçus"), default=0)
@@ -89,6 +90,11 @@ class Option(models.Model):
         ordering = ["id"]
 
 
+class Vote(models.Model):
+    option = models.ForeignKey(Option, on_delete=models.CASCADE)
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
+
+
 # #############################################################################
 #  Modification of the base User Model
 # #############################################################################