There should be one urls.py at the project level, and one urls.py at each app level. The project level urls.py should include each of the urls.py under a prefix.:
#project urls.py
urlpatterns = patterns(
'',
(r'^', include('mainpages.urls')),
(r'^admin/(.*)', admin.site.root),
(r'^captcha/', include('yacaptcha.urls')),
.....
)
#app urls.py
urlpatterns = patterns(
'app.views',
url(r'^$', 'index'),
url(r'^what/$', 'what_view')
.....
)
Urlpatterns should be named. [1] This is done as:
url(r'^$', 'index', name='main_index'),
This enables calling {% url urlpatternname %} much easier.
The pattern name should be of the form appname_viewname. If the same view is used in multiple urlpatterns, the name should be of form appname_viewname_use, as in search_advanced_auth and search_advanced_unauth.:
#urls.py for app search
urlpatterns = patterns(
'search.views'
url(r'^advanced_product_search/$', 'advanced', name='search_advanced_product'),
url(r'^advanced_content_search/$', 'advanced', name='search_advanced_content'),
...
)