def next_migration_number(dirname)
      next_migration_number = current_migration_number(dirname) + 1
      if ActiveRecord::Base.timestamped_migrations
        [Time.now.utc.strftime("%Y%m%d%H%M%S"), format("%.14d", next_migration_number)].max
      else
        format("%.3d", next_migration_number)
      end
    end
def next_migration_number(dirname)
      next_migration_number = current_migration_number(dirname) + 1
      if ActiveRecord::Base.timestamped_migrations
        [Time.now.utc.strftime("%Y%m%d%H%M%S"), format("%.14d", next_migration_number)].max
      else
        format("%.3d", next_migration_number)
      end
    end
while methods have moved around this has been the implementation
 since ActiveRecord 3.0