shell/sinatra-template

class Product < ActiveRecord::Base
  belongs_to :category
  
  validates_presence_of :image_url, :title, :link
  validates_length_of :image_url, :title, :link, :minimum => 1, :allow_blank => false
  
  default_scope order('created_at DESC')

  def hello
    "world"
  end
end

class Category < ActiveRecord::Base
  has_many :products
  
  validates_presence_of :name
  validates_uniqueness_of :name

  delegate :to_s, :to => :name

  def self.to_options
    all.collect{|cat| [cat.name, cat.id]}
  end
end