old_contents: from django.conf.urls import url
  
  from .views import ProductCatalogue, ProductDetail, product_review
  
  
  urlpatterns = [
      url(r'^catalogue/$', ProductCatalogue.as_view(), name='catalogue'),
      url(r'^(?P<slug>[\w\-]+)/$', ProductDetail.as_view(), name='detail'),
      url(r'^review/$', product_review, name='review')
  ]
  
new_contents: from django.conf.urls import url
  
  from .views import ProductCatalogue, ProductDetail, product_review
  
  
  urlpatterns = [
      url(r'^catalogue/$', ProductCatalogue.as_view(), name='catalogue'),
      url(r'^review/$', product_review, name='review'),
      url(r'^(?P<slug>[\w\-]+)/$', ProductDetail.as_view(), name='detail'),
  ]
  
subject: Move products:review URLConf above product:detail