QuickStart

This gem's README.md does not include the git option in the gem declaration. Apparently it's needed because it appeared I was pulling in some other version.

rails new <app>
cd <app>

Update Gemfile. Make sure that prawn-rails comes before prawn-table.

gem 'prawn-rails', '0.1.0', git: 'https://github.com/cortiz/prawn-rails.git'
gem 'prawn-table', '0.2.1'

Install new gems

bundle install

Create config/initializers/prawn-rails.rb to set prawn defaults

require 'prawn'
PrawnRails.config do |config|
  config.page_layout = :portrait
  config.page_size   = "A4"
  config.skip_page_creation = false
end

Create app/views/<controller name>/<action>.pdf.prawn

prawn_document(:page_layout => :landscape) do |pdf|
  pdf.text "Hello World"
end

Start app and navigate to <controller>/<action>.pdf

E.g.,

rails s
open http://localhost:3000/<controller>/<action>.pdf

You should see a pdf file generated with the content, "Hello World"