old_contents: from django.conf.urls import patterns, url
  
  from activities import views
  
  urlpatterns = patterns('',
      url(r'^$', views.list, name='list'),
      url(r'^create/$', views.create, name='create'),
      url(r'^(?P<activity_id>\d+)/$', views.show, name='show'),
      url(r'^(?P<activity_id>\d+)/edit/$', views.edit, name='edit'),
      url(r'^(?P<activity_id>\d+)/review/$', views.review, name='review'),
  )
  
new_contents: from django.conf.urls import patterns, url
  
  from activities import views
  
  urlpatterns = patterns('',
      url(r'^$', views.list, name='list'),
      url(r'^create/$', views.create, name='create'),
      url(r'^(?P<activity_id>\d+)/$', views.show, name='show'),
      url(r'^(?P<activity_id>\d+)/edit/$', views.edit, name='edit'),
      url(r'^(?P<activity_id>\d+)/review/$', views.review, name='review'),
      url(r'^(?P<activity_id>\d+)/participate/$', views.participate, name='participate'),
      url(r'^(?P<activity_id>\d+)/view_participation/$', views.view_participation, name='view_participation'),
  )
  
subject: Update activity urls.