order.rb

用NETBEANS编的

# Copyright (c) 2006 The Pragmatic Programmers, LLC.
# Reproduced from the book "Agile Web Development with Rails, 2nd Ed.",
# published by The Pragmatic Bookshelf.
# Available from www.pragmaticprogrammer.com/titles/rails2
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this source code (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# 1) This Software cannot be used in any training course or seminar, whether
# presented live, via video, audio, screencast, or any other media, without
# explicit prior permission from the publisher.
# 
# 2) The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE. 

# Schema as of June 12, 2006 15:45 (schema version 7)
#
# Table name: orders
#
#  id       :integer(11)   not null, primary key
#  name     :string(255)   
#  address  :text          
#  email    :string(255)   
#  pay_type :string(10)    
#

#START:validate
#START:select
#START:has_many
class Order < ActiveRecord::Base
#END:select
#END:validate
  
  has_many :line_items
#END:has_many

  #START:select  
  PAYMENT_TYPES = [
    #  Displayed        stored in db
    [ "Check",          "check" ],
    [ "Credit card",    "cc"   ],
    [ "Purchase order", "po" ]
  ]
  
  # ...
  #END:select

  #START:validate
  validates_presence_of :name, :address, :email, :pay_type
  validates_inclusion_of :pay_type, :in => PAYMENT_TYPES.map {|disp, value| value}
  
  # ...
  #END:validate

  #START:add_line_items_from_cart
  def add_line_items_from_cart(cart)
    cart.items.each do |item|
      li = LineItem.from_cart_item(item)
      line_items << li 
    end 
  end 
  #END:add_line_items_from_cart


#START:has_many  
end
#END:has_many