added filtering by discount to product search

products/views.py

@@ -163,6 +163,15 @@ def product_search(request):
                   shipping_cost = False
             else:
                   shipping_cost = None
+      discount = request.GET.get('discount', None)
+      if discount is not None:
+            if discount == 'true':
+                  discount = True
+            elif discount == 'false':
+                  discount = False
+            else:
+                  discount = None
+
       if query_string is None:
             return Response({"errors": {"details": "No query string to parse"}})
       elif query_string is '':
@@ -175,7 +184,7 @@ def product_search(request):
             # split query string into single words
             chunks = query_string.split(' ')
             for chunk in chunks:
-                  product_set = find_related_products_v6(chunk, shipping_cost)
+                  product_set = find_related_products_v6(chunk, shipping_cost, discount)
                   # add to result set
                   result_set.update(product_set)
             # TODO: add search for entire phrase ???