canvas-lms/db/migrate/20120517222224_add_collection_item_html_preview.rb

class AddCollectionItemHtmlPreview < ActiveRecord::Migration
  tag :predeploy

  def self.up
    add_column :collection_item_datas, :html_preview, :text
  end

  def self.down
    remove_column :collection_item_datas, :html_preview
  end
end