django-mailbox/django_mailbox/south_migrations/0014_migrate_message_attachments.py

import datetime
from south.db import db
from south.v2 import SchemaMigration
from django.db import models


class Migration(SchemaMigration):
    no_dry_run = True
    def forwards(self, orm):
        for message in orm['django_mailbox.Message'].objects.all():
            for attachment in message.attachments.all():
                attachment.message = message
                attachment.save()

    def backwards(self, orm):
        for attachment in orm['django_mailbox.MessageAttachment'].objects.all():
            if attachment.message:
                attachment.message.attachments.add(
                    attachment
                )

    models = {
        'django_mailbox.mailbox': {
            'Meta': {'object_name': 'Mailbox'},
            'active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
            'from_email': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '255', 'null': 'True', 'blank': 'True'}),
            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
            'uri': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '255', 'null': 'True', 'blank': 'True'})
        },
        'django_mailbox.message': {
            'Meta': {'object_name': 'Message'},
            'attachments': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "'messages_old'", 'blank': 'True', 'to': "orm['django_mailbox.MessageAttachment']"}),
            'body': ('django.db.models.fields.TextField', [], {}),
            'from_header': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
            'in_reply_to': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'replies'", 'null': 'True', 'to': "orm['django_mailbox.Message']"}),
            'mailbox': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'messages'", 'to': "orm['django_mailbox.Mailbox']"}),
            'message_id': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
            'outgoing': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
            'processed': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
            'read': ('django.db.models.fields.DateTimeField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
            'subject': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
            'to_header': ('django.db.models.fields.TextField', [], {})
        },
        'django_mailbox.messageattachment': {
            'Meta': {'object_name': 'MessageAttachment'},
            'document': ('django.db.models.fields.files.FileField', [], {'max_length': '100'}),
            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
            'message': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'attachments_new'", 'null': 'True', 'to': "orm['django_mailbox.Message']"})
        }
    }

    complete_apps = ['django_mailbox']