old_contents: from django.conf.urls.defaults import patterns, url
  
  urlpatterns = patterns('',
      url(r'^(?P<object_name>[-\w]+)/$', 'form_designer.views.detail', name='form_designer_detail'),
      url(r'^h/(?P<public_hash>[-\w]+)/$', 'form_designer.views.detail_by_hash', name='form_designer_detail_by_hash'),
  )
  
new_contents: from django.conf.urls import patterns, url
  
  urlpatterns = patterns('',
      url(r'^(?P<object_name>[-\w]+)/$', 'form_designer.views.detail', name='form_designer_detail'),
      url(r'^h/(?P<public_hash>[-\w]+)/$', 'form_designer.views.detail_by_hash', name='form_designer_detail_by_hash'),
  )
  
subject: Update urls.py