Migrate prefixes

mailadmin/migrations/0004_auto_20150125_1401.py

@@ -4,6 +4,18 @@ from __future__ import unicode_literals
 from django.db import models, migrations
 
 
+def normalize_prefixes(apps, schema_editor):
+    Prefix = apps.get_model("mailadmin", "Prefix")
+    OrgUnit = apps.get_model("mailadmin", "OrgUnit")
+
+    for ou in OrgUnit.objects.all():
+        Prefix.objects.create(name=ou.prefix, orgunit=ou)
+
+
+def noop(*args, **kwargs):
+    pass
+
+
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -22,6 +34,7 @@ class Migration(migrations.Migration):
             },
             bases=(models.Model,),
         ),
+        migrations.RunPython(normalize_prefixes, noop),
         migrations.RemoveField(
             model_name='orgunit',
             name='prefix',