Rails: Output helpers for migrations

Copyclass AddUserToken < ActiveRecord::Migration

  class User < ActiveRecod::Base; end

  def up
    add_column :users, :token, :string
    
    announce "now generating tokens"
    User.find_in_batches do |users|
      say_with_time "For users ##{users.first.id} to ##{users.last.id}" do
        users.each do |user|
          user.update_attribute :token, # ... generate token
        end
      end
    end
  end

end

Copy==  AddUserToken: migrating =========================================
# ...
==  AddUserToken: now generating tokens =============================
-- For users #1 to #500
   -> 1.542s
   -> 1 rows
==  AddUserToken: migrated (1.0003s) ================================