Enable sorting orders by order number. No display change.

oscar/apps/dashboard/orders/views.py

@@ -89,7 +89,10 @@ class OrderListView(ListView, BulkEditMixin):
         Build the queryset for this list and also update the title that
         describes the queryset
         """
+
         queryset = self.model.objects.all().order_by('-date_placed')
+        queryset = self.sort_queryset(queryset)
+
         self.description = self.base_description
 
         # Look for shortcut query filters
@@ -167,6 +170,17 @@ class OrderListView(ListView, BulkEditMixin):
 
         return queryset
 
+    def sort_queryset(self, queryset):
+        sort = self.request.GET.get('sort', None)
+        allowed_sorts = ['number',]
+
+        if sort in allowed_sorts:
+            direction = self.request.GET.get('dir', 'desc')
+            sort = ('-' if direction == 'desc' else '') + sort
+            queryset = queryset.order_by(sort)
+
+        return queryset
+
     def get_context_data(self, **kwargs):
         ctx = super(OrderListView, self).get_context_data(**kwargs)
         ctx['queryset_description'] = self.description