text: from __future__ import unicode_literals
  
  from django.db import models, migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('document_indexing', '0004_auto_20150708_0113'),
      ]
  
      operations = [
          migrations.AddField(
              model_name='index',
              name='slug',
              field=models.SlugField(
                  null=True, max_length=128, blank=True, help_text='This values '
                  'will be used by other apps to reference this index.',
                  unique=True, verbose_name='Slug'
              ),
              preserve_default=True,
          ),
      ]
  