old_contents: from models import Story, Page, StoryPage
  from django.contrib import admin
  
  admin.site.register(Story)
  admin.site.register(Page)
  admin.site.register(StoryPage)
  
new_contents: from models import Story, Page, StoryPage
  from django.contrib import admin
  
  class StoryAdmin(admin.ModelAdmin):
      list_display = ('title', 'slug')
      prepopulated_fields = dict(slug=['title'])
      exclude = ('owner',)
  
  # Uncomment the stuff below to automate keeping  creator as owner
  # and restricting editing to owner and superuser
  
  #     save_model(self, request, obj, form, change):
  #         if not change:
  #             obj.owner = request.user
  #         super(StoryAdmin, self).save_model(request, obj, form, change)
  
  #     def queryset(self, request):
  #         qs = super(StoryAdmin, self).queryset(request)
  #         if request.user.is_superuser:
  #             return qs
  #         return qs.filter(owner=request.user)
  
  #     def has_change_permission(self, request, obj=None):
  #         ok = super(StoryAdmin, self).has_change_permission(request, obj)
  #         if not ok:
  #             return False
  #         if obj is None:
  #             return True
  #         # Not sure I need this:
  #         if request.user.is_superuser:
  #             return True
  #         return request.user.id == obj.owner.id
  
  admin.site.register(Story, StoryAdmin)
  admin.site.register(Page)
  admin.site.register(StoryPage)
  
subject: Add a StoryAdmin to hide owner.