diff -r 8fd40139827c -r 854a027c80ff server/python/django2/renkanmanager/migrations/0004_foreign_key_fields_initial.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/python/django2/renkanmanager/migrations/0004_foreign_key_fields_initial.py	Wed Apr 27 16:36:30 2016 +0200
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.1 on 2016-04-19 10:08
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('renkanmanager', '0003_auto_20160105_0954'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='renkan',
+            options={'permissions': (('view_renkan', 'Can view renkan'),)},
+        ),
+        migrations.AlterModelOptions(
+            name='revision',
+            options={'permissions': (('view_revision', 'Can view revision'),)},
+        ),
+        migrations.AlterModelOptions(
+            name='workspace',
+            options={'permissions': (('view_workspace', 'Can view workspace'),)},
+        ),
+        migrations.AddField(
+            model_name='renkan',
+            name='source_revision',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='renkan_source_revision', to='renkanmanager.Revision', to_field='revision_guid'),
+        ),
+        migrations.AddField(
+            model_name='renkan',
+            name='workspace',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='renkanmanager.Workspace', to_field='workspace_guid'),
+        ),
+        migrations.AddField(
+            model_name='revision',
+            name='parent_renkan',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='renkanmanager.Renkan', to_field='renkan_guid'),
+        ),
+    ]