old_contents: # ------------------------------------------------------------------------
  # coding=utf-8
  # ------------------------------------------------------------------------
  
  from __future__ import absolute_import
  
  from django.contrib import admin
  from django.core.exceptions import ImproperlyConfigured
  from django.db.models import FieldDoesNotExist
  
  from feincms import ensure_completely_loaded
  from .models import Page
  from .modeladmins import PageAdmin
  
  # ------------------------------------------------------------------------
  ensure_completely_loaded()
  try:
      Page._meta.get_field('template_key')
  except FieldDoesNotExist:
      raise ImproperlyConfigured(
          'The page module requires a \'Page.register_templates()\' call somewhere'
          ' (\'Page.register_regions()\' is not sufficient).')
  
  admin.site.register(Page, PageAdmin)
  
  # ------------------------------------------------------------------------
  # ------------------------------------------------------------------------
  
new_contents: # ------------------------------------------------------------------------
  # coding=utf-8
  # ------------------------------------------------------------------------
  
  from __future__ import absolute_import
  
  from django.conf import settings
  from django.contrib import admin
  from django.core.exceptions import ImproperlyConfigured
  from django.db.models import FieldDoesNotExist
  
  from feincms import ensure_completely_loaded
  from .models import Page
  from .modeladmins import PageAdmin
  
  # ------------------------------------------------------------------------
  
  if getattr(settings, 'FEINCMS_USE_PAGE_ADMIN', True):
      ensure_completely_loaded()
      try:
          Page._meta.get_field('template_key')
      except FieldDoesNotExist:
          raise ImproperlyConfigured(
              "The page module requires a 'Page.register_templates()' call "
              "somewhere ('Page.register_regions()' is not sufficient). "
              "If you're not using the default Page admin, maybe try "
              "FEINCMS_USE_PAGE_ADMIN=False to avoid this warning."
          )
  
      admin.site.register(Page, PageAdmin)
  
  # ------------------------------------------------------------------------
  # ------------------------------------------------------------------------
  
subject: Allow FEINCMS_USE_PAGE_ADMIN=False to avoid registering default Page admin.