discourse/db/migrate/20151109124147_drop_group_managers.rb
Sam Saffron 30990006a9 DEV: enable frozen string literal on all files
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.

Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
2019-05-13 09:31:32 +08:00

18 lines
461 B
Ruby

# frozen_string_literal: true
class DropGroupManagers < ActiveRecord::Migration[4.2]
def up
# old data under old structure
execute "UPDATE group_users SET owner = true
WHERE exists (SELECT 1 FROM group_managers m
WHERE m.group_id = group_users.group_id AND
m.user_id = group_users.user_id)"
drop_table "group_managers"
end
def down
raise ActiveRecord::IrreversibleMigration
end
end