Discource-C
/
discourse
mirror of https://github.com/discourse/discourse.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PERF: Remove redundant DB queries from `TopicView` (#19658) 

This commit removes 3 redundant DB queries when loading posts.

1. `@posts` will eventually have to be loaded so we can avoid two
additional queries.

2. No need to preload topic association of posts as we're already
dealing with a fixed topic in `TopicView`.
This commit is contained in:
Alan Guo Xiang Tan 2023-01-03 08:17:52 +08:00 committed by GitHub
parent d8a19b2c9a
commit be1ae9411b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/topic_view.rb
View File

@ -139,11 +139,11 @@ class TopicView
if @posts && !@skip_custom_fields
if (added_fields = User.allowed_user_custom_fields(@guardian)).present?
@user_custom_fields = User.custom_fields_for_ids(@posts.pluck(:user_id), added_fields)
@user_custom_fields = User.custom_fields_for_ids(@posts.map(&:user_id), added_fields)
end
if (allowed_fields = TopicView.allowed_post_custom_fields(@user, @topic)).present?
@post_custom_fields = Post.custom_fields_for_ids(@posts.pluck(:id), allowed_fields)
@post_custom_fields = Post.custom_fields_for_ids(@posts.map(&:id), allowed_fields)
end
end
@ -778,7 +778,6 @@ class TopicView
:reply_to_user,
:deleted_by,
:incoming_email,
:topic,
:image_upload
)