vendor/rails/activerecord/test/models/customer.rb

   1 class Customer < ActiveRecord::Base
   2   composed_of :address, :mapping => [ %w(address_street street), %w(address_city city), %w(address_country country) ], :allow_nil => true
   3   composed_of :balance, :class_name => "Money", :mapping => %w(balance amount), :converter => Proc.new { |balance| balance.to_money }
   4   composed_of :gps_location, :allow_nil => true
   5   composed_of :fullname, :mapping => %w(name to_s), :constructor => Proc.new { |name| Fullname.parse(name) }, :converter => :parse
   6 end
   7
   8 class Address
   9   attr_reader :street, :city, :country
  10
  11   def initialize(street, city, country)
  12     @street, @city, @country = street, city, country
  13   end
  14
  15   def close_to?(other_address)
  16     city == other_address.city && country == other_address.country
  17   end
  18
  19   def ==(other)
  20     other.is_a?(self.class) && other.street == street && other.city == city && other.country == country
  21   end
  22 end
  23
  24 class Money
  25   attr_reader :amount, :currency
  26
  27   EXCHANGE_RATES = { "USD_TO_DKK" => 6, "DKK_TO_USD" => 0.6 }
  28
  29   def initialize(amount, currency = "USD")
  30     @amount, @currency = amount, currency
  31   end
  32
  33   def exchange_to(other_currency)
  34     Money.new((amount * EXCHANGE_RATES["#{currency}_TO_#{other_currency}"]).floor, other_currency)
  35   end
  36 end
  37
  38 class GpsLocation
  39   attr_reader :gps_location
  40
  41   def initialize(gps_location)
  42     @gps_location = gps_location
  43   end
  44
  45   def latitude
  46     gps_location.split("x").first
  47   end
  48
  49   def longitude
  50     gps_location.split("x").last
  51   end
  52
  53   def ==(other)
  54     self.latitude == other.latitude && self.longitude == other.longitude
  55   end
  56 end
  57
  58 class Fullname
  59   attr_reader :first, :last
  60
  61   def self.parse(str)
  62     return nil unless str
  63     new(*str.to_s.split)
  64   end
  65
  66   def initialize(first, last = nil)
  67     @first, @last = first, last
  68   end
  69
  70   def to_s
  71     "#{first} #{last.upcase}"
  72   end
  73 end