new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from django.contrib import admin
  
  
  class PublishableAdmin(admin.ModelAdmin):
      """
      Overrides standard admin.ModelAdmin save_model method
      It sets user (author) based on data from requet.
      """
      def save_model(self, request, obj, form, change):
          if getattr(obj, 'pk', None) is None:
              obj.user = request.user
          obj.save()
  
  
subject: create PublishableAdmin on core issue #66