# -*- coding: utf-8 -*- from __future__ import unicode_literals from django.db import models, migrations class Migration(migrations.Migration): def thread_to_threads(apps, schema_editor): Post = apps.get_model('boards', 'Post') for post in Post.objects.all(): post.threads.add(post.thread_new) dependencies = [ ('boards', '0006_auto_20150201_2130'), ] operations = [ migrations.AddField( model_name='post', name='threads', field=models.ManyToManyField(to='boards.Thread'), preserve_default=True, ), migrations.RunPython(thread_to_threads), migrations.RemoveField( model_name='post', name='thread_new', ), ]