impress/app/models/swf_asset.rb

class SwfAsset < ActiveRecord::Base
  set_inheritance_column 'inheritance_type'
  
  belongs_to :zone
  
  delegate :depth, :to => :zone
  
  scope :for_json, includes(:zone)
  
  def local_url
    uri = URI.parse(url)
    uri.host = RemoteImpressHost
    pieces = uri.path.split('/')
    uri.path = "/assets/swf/outfit/#{pieces[2]}/#{pieces[4..7].join('/')}"
    uri.to_s
  end
  
  def as_json(options={})
    {
      :id => id,
      :depth => depth,
      :local_url => local_url
    }
  end
end