1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
rails--rails/activerecord/test/models/invoice.rb

5 lines
160 B
Ruby
Raw Normal View History

class Invoice < ActiveRecord::Base
has_many :line_items, :autosave => true
before_save {|record| record.balance = record.line_items.map(&:amount).sum }
end