canvas-lms/db/migrate/20150818172939_update_tool_proxy_shared_secret.rb

class UpdateToolProxySharedSecret < ActiveRecord::Migration
  tag :predeploy

  def up
    change_column :lti_tool_proxies, :shared_secret, :text
  end

  def down
    change_column :lti_tool_proxies, :shared_secret, :string
  end
end