gistfile1.rb

class ImagesController < ApplicationController
  session :cookie_only => false, :only => :upload_image_block

  def upload_image_block
    @image = Image.new(:file => swf_upload_data) # here you can use your favourite plugin to work with attachments
    if @image.save
      render :partial => 'image', :object => @image
    else
      render :text => "error"
    end
  end

end