collect day is unique for a sector (#7683)

passerelle_montpellier_encombrants/migrations/0006_auto_20150626_0221.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passerelle_montpellier_encombrants', '0005_street'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='collectday',
+            unique_together=set([('sector', 'date')]),
+        ),
+    ]

passerelle_montpellier_encombrants/models.py

@@ -74,6 +74,7 @@ class CollectDay(models.Model):
 
     class Meta:
         ordering = ['date']
+        unique_together = ('sector', 'date')
 
     def __unicode__(self):
         return '%s: %s' % (self.date, self.sector)