gistfile1.rb

class Upload < ActiveRecord::Base
  attr_accessible :upload
  has_attached_file :upload, :processors => [:watermark]
  before_save :test
  
  #https://gist.github.com/784445

  include Rails.application.routes.url_helpers

  def test
    STDERR.puts self.upload
    STDERR.puts "nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn"
  end

  def to_jq_upload
    {
      "name" => read_attribute(:upload_file_name),
      "size" => read_attribute(:upload_file_size),
      "url" => upload.url(:original),
      "delete_url" => upload_path(self),
      "delete_type" => "DELETE" 
    }
  end

end