donphan/db/migrate/20191007013357_update_pt_lo...

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class UpdatePtLocales < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
User.where(locale: 'pt').in_batches.update_all(locale: 'pt-PT')
end
def down
User.where(locale: 'pt-PT').in_batches.update_all(locale: 'pt')
end
end