Correction : empêcher d'ajouter 2 fois la même collection (figurine/consoles)

collection/games/migrations/0011_auto_20180116_1756.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.9 on 2018-01-16 17:56
+from __future__ import unicode_literals
+
+from django.db import migrations
+from django.db import models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('games', '0010_auto_20180115_1730'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='platform',
+            name='name',
+            field=models.CharField(
+                help_text='Most used platform name.',
+                max_length=255,
+                unique=True,
+                verbose_name='name'), ),
+    ]