I forgot the migration :p

see #603

modoboa/extensions/admin/migrations/0042_auto__del_field_mailbox_quota_value.py

@@ -0,0 +1,130 @@
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Deleting field 'Mailbox.quota_value'
+        db.delete_column(u'admin_mailbox', 'quota_value_id')
+
+
+    def backwards(self, orm):
+
+        # User chose to not deal with backwards NULL issues for 'Mailbox.quota_value'
+        raise RuntimeError("Cannot reverse this migration. 'Mailbox.quota_value' and its values cannot be restored.")
+        
+        # The following code is provided here to aid in writing a correct migration        # Adding field 'Mailbox.quota_value'
+        db.add_column(u'admin_mailbox', 'quota_value',
+                      self.gf('django.db.models.fields.related.OneToOneField')(to=orm['admin.Quota'], unique=True),
+                      keep_default=False)
+
+
+    models = {
+        'admin.alias': {
+            'Meta': {'ordering': "['domain__name', 'address']", 'unique_together': "(('address', 'domain'),)", 'object_name': 'Alias'},
+            'address': ('django.db.models.fields.CharField', [], {'max_length': '254'}),
+            'aliases': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['admin.Alias']", 'symmetrical': 'False'}),
+            'dates': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.ObjectDates']"}),
+            'domain': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.Domain']"}),
+            'enabled': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'extmboxes': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'mboxes': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['admin.Mailbox']", 'symmetrical': 'False'})
+        },
+        'admin.domain': {
+            'Meta': {'ordering': "['name']", 'object_name': 'Domain'},
+            'dates': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.ObjectDates']"}),
+            'enabled': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
+            'quota': ('django.db.models.fields.IntegerField', [], {})
+        },
+        'admin.domainalias': {
+            'Meta': {'object_name': 'DomainAlias'},
+            'dates': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.ObjectDates']"}),
+            'enabled': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
+            'target': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.Domain']"})
+        },
+        'admin.mailbox': {
+            'Meta': {'object_name': 'Mailbox'},
+            'address': ('django.db.models.fields.CharField', [], {'max_length': '252'}),
+            'dates': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.ObjectDates']"}),
+            'domain': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.Domain']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'quota': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'use_domain_quota': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['core.User']"})
+        },
+        'admin.mailboxoperation': {
+            'Meta': {'object_name': 'MailboxOperation'},
+            'argument': ('django.db.models.fields.TextField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'mailbox': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['admin.Mailbox']", 'null': 'True', 'blank': 'True'}),
+            'type': ('django.db.models.fields.CharField', [], {'max_length': '20'})
+        },
+        'admin.objectdates': {
+            'Meta': {'object_name': 'ObjectDates'},
+            'creation': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'last_modification': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'})
+        },
+        'admin.quota': {
+            'Meta': {'object_name': 'Quota'},
+            'bytes': ('django.db.models.fields.BigIntegerField', [], {'default': '0'}),
+            'messages': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'username': ('django.db.models.fields.EmailField', [], {'max_length': '254', 'primary_key': 'True'})
+        },
+        u'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        u'auth.permission': {
+            'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        u'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        u'core.objectaccess': {
+            'Meta': {'unique_together': "(('user', 'content_type', 'object_id'),)", 'object_name': 'ObjectAccess'},
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_owner': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['core.User']"})
+        },
+        u'core.user': {
+            'Meta': {'ordering': "['username']", 'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '254', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_local': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '256'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '254'})
+        }
+    }
+
+    complete_apps = ['admin']