[extensions-web] Revamp sorting/filtering backend

[Jasper St. Pierre <jstpierre src gnome org>]

commit 0bee7d589fdf608e761fb07e567e0e3500c7ca8d
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sat Dec 17 01:58:21 2011 -0500

    Revamp sorting/filtering backend
    
    We now support sorting on arbitrary order

 sweettooth/extensions/views.py |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)
---
diff --git a/sweettooth/extensions/views.py b/sweettooth/extensions/views.py
index 935fe5a..ce3611c 100644
--- a/sweettooth/extensions/views.py
+++ b/sweettooth/extensions/views.py
@@ -54,17 +54,15 @@ def ajax_query_params_query(request):
 
     queryset = models.Extension.objects.filter(**query_params)
 
-    sort = request.GET.get('sort', '')
-
-    if sort == 'recent':
-        queryset = queryset.order_by('-pk')
-    elif sort == 'downloads':
-        queryset = queryset.order_by('-downloads')
-    elif sort == 'popularity':
-        queryset = queryset.order_by('-popularity')
-    else:
-        queryset = queryset.order_by('name')
+    sort = request.GET.get('sort', 'name')
+    sort = dict(recent='created').get(sort, sort)
+    if sort not in ('created', 'downloads', 'popularity', 'name'):
+        raise Http404()
+
+    order = request.GET.get('order')
+    order = dict(desc='-', asc='').get(order, '-')
 
+    queryset = queryset.order_by('%s%s' % (order, sort))
     return queryset
 
 @ajax_view