more search optimization

products/views.py

@@ -138,24 +138,23 @@ def product_search(request):
       if query_string is None:
             return Response({"errors": {"details": "No query string to parse"}})
       try:
-            chunks = query_string.split(' ')
-
+            # save results
             result_set = set()
-            for chunk in chunks:
-                  # search in name
-                  name_search = Q(name=chunk)
-                  description_search = Q(description=chunk)
-                  tags_search = Q(tags=chunk)
-                  category_search = Q(category=chunk)
-                  attributes_search = Q(attributes=chunk)
-
-                  query_list = [name_search, description_search, tags_search, category_search, attributes_search]
-
-                  products = Product.objects.filter(reduce(operator.or_, query_list))
-
-                  for item in products:
-                        result_set.add(item)
-
+            # split query string into single words
+            chunks = query_string.split(' ')
+            # create search queries
+            name_search = Q(name__in=chunks)
+            description_search = Q(description__in=chunks)
+            tags_search = Q(tags__in=chunks)
+            category_search = Q(category__in=chunks)
+            attributes_search = Q(attributes__in=chunks)
+            query_list = [name_search, description_search, tags_search, category_search, attributes_search]
+            # get instances
+            products = Product.objects.filter(reduce(operator.or_, query_list))
+            # add to set
+            for item in products:
+                  result_set.add(item)
+            # serialize and respond
             data = serializers.serialize('json', result_set)
             return Response(data=data)
       except Exception as e: