discourse/db/migrate/20200430010528_remove_avg_t...

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

42 lines
1.1 KiB
Ruby
Raw Normal View History

# frozen_string_literal: true
class RemoveAvgTimeFromTopicsPosts < ActiveRecord::Migration[6.0]
disable_ddl_transaction!
def up
# this makes it re-runnable and also works if it was not created initially
execute <<~SQL
ALTER TABLE topics DROP COLUMN IF EXISTS avg_time
SQL
ActiveRecord::Base.transaction do
execute "DROP VIEW badge_posts"
execute <<~SQL
ALTER TABLE posts DROP COLUMN IF EXISTS avg_time
SQL
# we must recreate this view every time we amend posts
# p.* is auto expanded and persisted into the view definition
# at create time
execute <<~SQL
CREATE VIEW badge_posts AS
SELECT p.*
FROM posts p
JOIN topics t ON t.id = p.topic_id
JOIN categories c ON c.id = t.category_id
WHERE c.allow_badges AND
p.deleted_at IS NULL AND
t.deleted_at IS NULL AND
NOT c.read_restricted AND
t.visible AND
p.post_type IN (1,2,3)
SQL
end
end
def down
# do nothing re-runnable
end
end