old_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import models, migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('contenttypes', '0002_remove_content_type_name'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Route',
              fields=[
                  ('id', models.AutoField(auto_created=True, verbose_name='ID', primary_key=True, serialize=False)),
                  ('slug', models.SlugField(help_text='\n        Used to create the location of the Route. The Root Route needs\n        "slug" to be blank; all other Routes need a value unique to the parent.\n        It can only contain letters, numbers, underscores, or hyphens.\n    ', default='', max_length=255)),
                  ('url', models.TextField(unique=True, editable=False, db_index=True)),
                  ('parent', models.ForeignKey(blank=True, null=True, related_name='children', to='routes.Route')),
                  ('polymorphic_ctype', models.ForeignKey(null=True, related_name='polymorphic_routes.route_set+', editable=False, to='contenttypes.ContentType')),
              ],
          ),
          migrations.AlterUniqueTogether(
              name='route',
              unique_together=set([('parent', 'slug')]),
          ),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import models, migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('contenttypes', '0002_remove_content_type_name'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Route',
              fields=[
                  ('id', models.AutoField(auto_created=True, verbose_name='ID', primary_key=True, serialize=False)),
                  ('slug', models.SlugField(max_length=255, default='', help_text='The url fragment at this point in the Route hierarchy.')),
                  ('url', models.TextField(unique=True, editable=False, db_index=True)),
                  ('parent', models.ForeignKey(blank=True, null=True, related_name='children', to='routes.Route')),
                  ('polymorphic_ctype', models.ForeignKey(null=True, related_name='polymorphic_routes.route_set+', editable=False, to='contenttypes.ContentType')),
              ],
          ),
          migrations.AlterUniqueTogether(
              name='route',
              unique_together=set([('parent', 'slug')]),
          ),
      ]
  
subject: Update new migration to match existing docstring