From 01a722885d32220bdbeeea02a41cce602b621f44 Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <gxtan1990@gmail.com>
Date: Wed, 1 Jul 2020 14:28:31 +0800
Subject: [PATCH] PERF: Exclude `image_url` and `thumbnails` from
 `SearchTopicListItemSerializer`.

The attributes are not used and was resulting in N+1 queries.
---
 app/serializers/search_topic_list_item_serializer.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/serializers/search_topic_list_item_serializer.rb b/app/serializers/search_topic_list_item_serializer.rb
index faf1322ff6a..2dd83d8da78 100644
--- a/app/serializers/search_topic_list_item_serializer.rb
+++ b/app/serializers/search_topic_list_item_serializer.rb
@@ -4,4 +4,12 @@ class SearchTopicListItemSerializer < ListableTopicSerializer
   include TopicTagsMixin
 
   attributes :category_id
+
+  def include_image_url?
+    false
+  end
+
+  def include_thumbnails?
+    false
+  end
 end