object transformation using migrators with Ruby inject idiom

migrators.rb

class SomeMigrator
  def migrator
    lambda do |some_object|
      {:previous_object => some_object}
    end
  end
end

migrators = [SomeMigrator.new.migrator, SomeMigrator.new.migrator]
original_object = "original object"

migrated_object = migrators.inject(original_object){|result, migrator| migrator.call(result)}

puts(migrated_object.inspect)