trustieforge/db/migrate/20151231012634_add_last_term_to_course.rb

class AddLastTermToCourse < ActiveRecord::Migration
  def change
    add_column :courses, :end_time, :integer
    add_column :courses, :end_term, :string

    count = Course.all.count / 30 + 2
    transaction do
      for i in 1 ... count do
        Course.page(i).per(30).each do |course|
          course.end_time = course.time
          course.end_term = course.term
          course.save
        end
      end
    end
  end
end