class AdBanner include Mongoid::Document include Mongoid::Timestamps include Mongoid::MultiParameterAttributes field :title field :picture_position field :post_date,type: Date field :unpost_date,type: Date field :context field :direct_to_after_click,type: Boolean field :ad_style #TODO Design should explain before_save :save_or_destroy embeds_many :ad_images, :cascade_callbacks => true def new_ad_images=(*attrs) attrs[0].each do |attr| #Loop by JSs,Themes,Imgs unless attr[:file].nil? self.ad_images << AdImage.new(attr) end end end def existing_ad_images=(*attrs) attrs[0].each do |attr| #Loop by JSs,Themes,Imgs ad_image = self.ad_images.find attr[0] ad_image.update_attributes(attr[1]) end end def save_or_destroy self.ad_images.each do |ad_image| if ad_image.to_save? ad_image.save end if ad_image.to_destroy? ad_image.destroy end end end end