■

昨日作ったモデルにバリデーション処理を追加する

class Product < ActiveRecord::Base
  validates_presence_of :title, :description, :image_url
  validates_numericality_of :price
  validates_uniqueness_of :title
  validates_format_of  :image_url,
                      :with     => %r{\.(gif|jpg|png)$}i,
                      :message  => "is not GIF,JPG,PNG IMAGE" 
  
  protected
  def validate
    errors.add(:price, "is Not Correct") if price.nil? || price < 0.01
  end
  
end

Productのモデルにデータを追加する画面は、
今までScaffoldを使用してきたけども、viewの部分を変更するために
Scaffoldを生成する

# script/generate scaffold product admin
      exists  app/controllers/
      exists  app/helpers/
      exists  app/views/admin
      exists  app/views/layouts/
      exists  test/functional/
  dependency  model
      exists    app/models/
      exists    test/unit/
      exists    test/fixtures/
        skip    app/models/product.rb
   identical    test/unit/product_test.rb
   identical    test/fixtures/products.yml
      create  app/views/admin/_form.rhtml
      create  app/views/admin/list.rhtml
      create  app/views/admin/show.rhtml
      create  app/views/admin/new.rhtml
      create  app/views/admin/edit.rhtml
overwrite app/controllers/admin_controller.rb? [Ynaqd] Y
       force  app/controllers/admin_controller.rb
overwrite test/functional/admin_controller_test.rb? [Ynaqd] Y
       force  test/functional/admin_controller_test.rb
   identical  app/helpers/admin_helper.rb
      create  app/views/layouts/admin.rhtml
      create  public/stylesheets/scaffold.css