Very basic quota control

src/tixlbase/migrations/0018_auto_20141025_0908.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tixlbase', '0017_auto_20141017_2148'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='quota',
+            name='event',
+            field=models.ForeignKey(to='tixlbase.Event', default=1, verbose_name='Event', related_name='quotas'),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='datetime',
+            field=models.DateTimeField(verbose_name='Date'),
+        ),
+    ]

src/tixlbase/models.py

@@ -750,6 +750,12 @@ class Quota(models.Model):
     implementation specific and are considered private. It is planned that they
     are being used as a fallback solution if redis is not available.
     """
+    event = models.ForeignKey(
+        Event,
+        on_delete=models.CASCADE,
+        related_name="quotas",
+        verbose_name=_("Event"),
+    )
     name = models.CharField(
         max_length=200,
         verbose_name=_("Name")
@@ -780,6 +786,9 @@ class Quota(models.Model):
         verbose_name = _("Quota")
         verbose_name_plural = _("Quotas")
 
+    def __str__(self):
+        return self.name
+
 
 class Order(models.Model):
     """