enables ordering by created in product search

products/views.py

@@ -156,6 +156,7 @@ def product_search(request):
       - discount: true/false
       - category: string
       - tags: string
+      - order: string (newest/oldest)
       """
       # capture query params
       q = request.GET.get('q', None)
@@ -181,6 +182,7 @@ def product_search(request):
       tags = request.GET.get('tags', None)
       price_min = request.GET.get('price_min', None)
       price_max = request.GET.get('price_max', None)
+      order = request.GET.get('order', '')
 
       if q is None:
             return Response({"errors": {"details": "No query string to parse"}})
@@ -204,10 +206,19 @@ def product_search(request):
 
             # extract filters from result_set
             filters = extract_search_filters(result_set)
-            # order results by RANK
+
             result_list = list(result_set)
-            ranked_products = sorted(result_list, key= lambda rank:rank.rank, reverse=True)
-            serializer = SearchResultSerializer(ranked_products, many=True)
+            if order == 'newest':
+                  # order results by created
+                  ordered_products = sorted(result_list, key= lambda x:x.created, reverse=True)
+            elif order == 'oldest':
+                  # order results by created
+                  ordered_products = sorted(result_list, key= lambda x:x.created, reverse=False)
+            else:
+                  # order results by RANK
+                  ordered_products = sorted(result_list, key= lambda rank:rank.rank, reverse=True)
+
+            serializer = SearchResultSerializer(ordered_products, many=True)
             product_results = [dict(i) for i in serializer.data]
             total_results = len(product_results)