example.py

example.py

# urls.py
urlpatterns = patterns('',
    url('^galerias/$',
         active_generic_view,
        {'view': object_list, 'model': MediaCenter, 'paginate_by': 20},
       name='webmedia_mediacenter_list'),

    url(r'^(?P<category_slug>[-\w]+)/galerias/$', 'mediacenter_category_list',
        name='webmedia_mediacenters_category_list'),

    url('^galerias/(?P<object_id>\d+)/$',
        active_generic_view,
        {'view': object_detail, 'model': MediaCenter},
       name='webmedia_mediacenter_detail'),
)

# views.py

def mediacenter_category_list(request, category_slug):
    try:
        galleries = MediaCenter.objects.get(section__slug=category_slug)
    except MediaCenter.DoesNotExist:
        raise Http404

    return object_list(
        request,
        queryset = galleries,
        paginate_by = 20,
        template_name = "webmedia/mediacenter_list.html",
    )