ActiveScaffold :: Wiki
Format calculated fields

Add a method render_<field name>_<calcualtion_name> in the helper.

class AccountController < ApplicationController
  active_scaffold :account do |config|
    config.columns[:price].calculate = :sum
  end
end

module AccountHelper
  def render_tweet_price_sum amount
    number_to_currency(amount, :unit => '$', :separator => ".", :delimiter => ",")
  end
end