class Item < ActiveRecord::Base
  belongs_to :category
  has_many :images, :as => :object, :order => :position
  
  validates_presence_of :name
  validates_presence_of :category_id
  validates_presence_of :description

  def to_param
    "#{id}-#{name.gsub(/[^a-z0-9]+/i, '-').downcase}"
  end
end