PDF::Writer

PDF Writer is a library for creating PDFs.

gem install pdf-writer

In config/environment.rb

require 'pdf/writer'
require 'pdf/simpletable' # If you want to be able to draw tables
Mime::Type.register 'application/pdf', :pdf

pdf = PDF::Writer.new(:paper => "A4")
pdf.text "This is some text", :font_size => 8, :justification => :center
pdf.render