old_contents: # encoding: utf-8
  import datetime
  from south.db import db
  from south.v2 import SchemaMigration
  from django.db import models
  
  class Migration(SchemaMigration):
  
      def forwards(self, orm):
  
          # Adding model 'DisqusPlugin'
          db.create_table('cmsplugin_disqusplugin', (
              ('cmsplugin_ptr', self.gf('django.db.models.fields.related.OneToOneField')(to=orm['cms.CMSPlugin'], unique=True, primary_key=True)),
          ))
          db.send_create_signal('aldryn_disqus', ['DisqusPlugin'])
  
  
      def backwards(self, orm):
  
          # Deleting model 'DisqusPlugin'
          db.delete_table('cmsplugin_disqusplugin')
  
  
      models = {
          'cms.cmsplugin': {
              'Meta': {'object_name': 'CMSPlugin'},
              'creation_date': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'language': ('django.db.models.fields.CharField', [], {'max_length': '15', 'db_index': 'True'}),
              'level': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
              'lft': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
              'parent': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['cms.CMSPlugin']", 'null': 'True', 'blank': 'True'}),
              'placeholder': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['cms.Placeholder']", 'null': 'True'}),
              'plugin_type': ('django.db.models.fields.CharField', [], {'max_length': '50', 'db_index': 'True'}),
              'position': ('django.db.models.fields.PositiveSmallIntegerField', [], {'null': 'True', 'blank': 'True'}),
              'rght': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
              'tree_id': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'})
          },
          'cms.placeholder': {
              'Meta': {'object_name': 'Placeholder'},
              'default_width': ('django.db.models.fields.PositiveSmallIntegerField', [], {'null': 'True'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'slot': ('django.db.models.fields.CharField', [], {'max_length': '50', 'db_index': 'True'})
          },
          'aldryn_disqus.disqusplugin': {
              'Meta': {'object_name': 'DisqusPlugin', 'db_table': "'cmsplugin_disqusplugin'", '_ormbases': ['cms.CMSPlugin']},
              'cmsplugin_ptr': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['cms.CMSPlugin']", 'unique': 'True', 'primary_key': 'True'}),
          }
      }
  
      complete_apps = ['aldryn_disqus']
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import models, migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('cms', '0012_auto_20150607_2207'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='DisqusPlugin',
              fields=[
                  ('cmsplugin_ptr', models.OneToOneField(parent_link=True, auto_created=True, primary_key=True, serialize=False, to='cms.CMSPlugin')),
              ],
              options={
                  'abstract': False,
              },
              bases=('cms.cmsplugin',),
          ),
      ]
  
subject: Add Django migrations