CSV stream with compression

gistfile1.rb

  def new
    returned_data = Report.get_report

    respond_to do |format|
      format.csv{
        filename = "#{Report.get_name[params[:id]]}_#{Time.now.strftime("%Y_%m_%d_%H_%M")}_#{branch]}.csv"
        temp = Tempfile.new(filename)
        temp << FasterCSV.generate(:force_quotes => true){ |csv| csv << returned_data[:headers]; returned_data[:data].map { |x| csv << x }; }
        temp.close
        `pigz #{temp.path}`

        headers['Content-Encoding'] = 'gzip'
        send_data File.open( temp.path + '.gz' ).read, :filename => filename, :type => 'text/csv'
      }
    end
  end