product.rb

class Product < ActiveRecord::Base
  ###########################
  # Including our Permalinked module
  include Permalinked
  
  ###########################
  # Products should have:
  # => name [r]
  # => permalink
  # => description [r]
  # => product group [a]
  # => category [a]
  # => images [a]
  # => preview image [a]
  # => zones [a]
  # => pricegroup [a]
  # => ship start time
  # => ship end time
  # => always shipping indicator
  validates_presence_of :name, :description
  validates_presence_of :always_shipping, :if => :shipping_dates_are_empty?, :message => "must be set to 'Yes' if you do not have both start and end shipping dates"
  
  validates_uniqueness_of :name
  
  has_many :product_zones
  has_many :zones,         :through => :product_zones
  has_many :images,        :as => :imageable, :conditions => "imageable_subtype = 'main_image'"
  
  has_one  :preview_image, :as => :imageable, :conditions => "imageable_subtype = 'preview_image'", :class_name => 'Image'

  belongs_to :pricegroup
  belongs_to :category
  belongs_to :product_group
  
  ###########################
  # After save it should:
  # => update/create permalink
  after_save :create_permalink

  ###########################  
  # Methods for the association
  # of our Product and ProductGroup   
  def group
    product_group.name if product_group
  end
  
  def group=(name)
    self.product_group = ProductGroup.find_or_create_by_name(name) unless name.blank?
  end
  
  ###########################  
  # Methods for the association
  # of our Product and Preview
  # Image
  def preview_image_array=(individual_image)
    if not individual_image[:uploaded_data].blank?
      individual_image["imageable_subtype"] = 'preview_image'
      if individual_image[:id].blank?
        image_save = images.build(individual_image)
      else
        image_save = self.preview_image
        image_save.attributes = individual_image
      end
      self.preview_image = image_save
    end
  end
  
  ###########################  
  # Methods for the association
  # of our Product and Images
  def main_images=(main_images_array)
    main_images_array.each do |individual_image|
      if not individual_image[:uploaded_data].blank?
        individual_image["imageable_subtype"] = 'main_image'
        if individual_image[:id].blank?
          image_save = images.build(individual_image)
        else
          image_save = images.detect { |i| i.id == individual_image[:id].to_i }
          image_save.attributes = individual_image
        end
        self.images << image_save
      end
    end
  end
  
  protected
    def shipping_dates_are_empty?
      ship_start.blank? || ship_end.blank?
    end
end