discourse/db/migrate/20200707154522_fix_topic_li...

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# frozen_string_literal: true
class FixTopicLikeCount < ActiveRecord::Migration[6.0]
def up
return if DB.query_single("SELECT * FROM site_settings WHERE name = 'enable_whispers' AND value = 't'").empty?
DB.exec(<<~SQL, whisper: Post.types[:whisper])
UPDATE topics SET like_count = tbl.like_count
FROM (
SELECT topic_id, SUM(like_count) like_count
FROM posts
WHERE deleted_at IS NULL AND post_type <> :whisper
GROUP BY topic_id
) AS tbl
WHERE topics.id = tbl.topic_id
AND topics.like_count <> tbl.like_count
SQL
end
def down
raise ActiveRecord::IrreversibleMigration
end
end