gistfile1.rb

require 'rubygems'
gem 'prawn', '0.11.1'
require 'prawn'

Prawn::Document.generate 'table_test.pdf' do |pdf|
  pdf.table [['cell1','cell2'],['cell3','cell4']] do
    cells[0, 1].style(:borders => [:bottom, :left])
    cells[1, 1].style(:borders => [:bottom, :right])
  end

  pdf.table [['cell1','cell2'],['cell3','cell4']] do
    rows(0).style(:borders => [:bottom, :left])
    rows(1).style(:borders => [:bottom, :right])
  end
end