PERF: Remove N+1 queries on topic list page.

2018-02-23 20:05:51 +05:30 · 2018-02-23 20:05:51 +05:30 · 43f0884660
parent a1ea477604
commit 43f0884660
1 changed files with 2 additions and 1 deletions
--- a/app/serializers/concerns/topic_tags_mixin.rb
+++ b/app/serializers/concerns/topic_tags_mixin.rb
@ -8,7 +8,8 @@ module TopicTagsMixin
  end

  def tags
-    topic.tags.pluck(:name)
+    # Calling method `pluck` along with `includes` causing N+1 queries
+    topic.tags.map(&:name)
  end

  def topic