Add permanencies tracking to counters

counter/migrations/0007_permanency.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+from django.conf import settings
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('counter', '0006_auto_20160717_1033'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Permanency',
+            fields=[
+                ('id', models.AutoField(serialize=False, primary_key=True, auto_created=True, verbose_name='ID')),
+                ('start', models.DateTimeField(verbose_name='start date')),
+                ('end', models.DateTimeField(verbose_name='end date')),
+                ('counter', models.ForeignKey(related_name='permanencies', to='counter.Counter')),
+                ('user', models.ForeignKey(related_name='permanencies', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]