canvas-lms/db/migrate/20120501213908_reset_ungraded_counts.rb

class ResetUngradedCounts < ActiveRecord::Migration
  tag :postdeploy
  disable_ddl_transaction!

  def self.up
    DataFixup::ResetUngradedCounts.send_later_if_production(:run)
  end

  def self.down
    raise ActiveRecord::IrreversibleMigration
  end
end