discourse/db/migrate/20170602132735_fix_group_al...

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class FixGroupAllowMembershipRequests < ActiveRecord::Migration
def up
execute <<~SQL
UPDATE groups g
SET allow_membership_requests = 'f'
WHERE NOT EXISTS (SELECT 1 FROM group_users gu WHERE gu.owner = 't' AND gu.group_id = g.id LIMIT 1)
SQL
end
def down
raise ActiveRecord::IrreversibleMigration
end
end