content: from django.db import migrations
  
  
  def update_content_types(apps, schema_editor):
      ContentType = apps.get_model('contenttypes', 'ContentType')
      CustomField = apps.get_model('extras', 'CustomField')
      db_alias = schema_editor.connection.alias
  
      # Delete the new ContentTypes effected by the new models in the users app
      ContentType.objects.using(db_alias).filter(app_label='users', model='user').delete()
  
      # Update the app labels of the original ContentTypes for auth.User to ensure
      # that any foreign key references are preserved
      ContentType.objects.using(db_alias).filter(app_label='auth', model='user').update(app_label='users')
  
      netboxuser_ct = ContentType.objects.using(db_alias).filter(app_label='users', model='netboxuser').first()
      if netboxuser_ct:
          user_ct = ContentType.objects.using(db_alias).filter(app_label='users', model='user').first()
          CustomField.objects.using(db_alias).filter(related_object_type_id=netboxuser_ct.id).update(
              related_object_type_id=user_ct.id
          )
          netboxuser_ct.delete()
  
  
  class Migration(migrations.Migration):
      dependencies = [
          ('users', '0002_squashed_0004'),
          ('extras', '0113_customfield_rename_object_type'),
      ]
  
      operations = [
          # The User table was originally created as 'auth_user'. Now we nullify the model's
          # db_table option, so that it defaults to the app & model name (users_user). This
          # causes the database table to be renamed.
          migrations.AlterModelTable(
              name='user',
              table=None,
          ),
          # Convert the `id` column to a 64-bit integer (BigAutoField is implied by DEFAULT_AUTO_FIELD)
          migrations.RunSQL('ALTER TABLE users_user ALTER COLUMN id TYPE bigint'),
          # Rename auth_user_* sequences
          migrations.RunSQL('ALTER TABLE auth_user_groups_id_seq RENAME TO users_user_groups_id_seq'),
          migrations.RunSQL('ALTER TABLE auth_user_id_seq RENAME TO users_user_id_seq'),
          migrations.RunSQL('ALTER TABLE auth_user_user_permissions_id_seq RENAME TO users_user_user_permissions_id_seq'),
          # Rename auth_user_* indexes
          migrations.RunSQL('ALTER INDEX auth_user_pkey RENAME TO users_user_pkey'),
          # Hash is deterministic; generated via schema_editor._create_index_name()
          migrations.RunSQL('ALTER INDEX auth_user_username_6821ab7c_like RENAME TO users_user_username_06e46fe6_like'),
          migrations.RunSQL('ALTER INDEX auth_user_username_key RENAME TO users_user_username_key'),
          # Update ContentTypes
          migrations.RunPython(code=update_content_types, reverse_code=migrations.RunPython.noop),
      ]
  