Basic Save & Open Page For Poltergeist

gistfile1.rb

def save_and_open_page
  dir = "#{Rails.root}/tmp/cache/capybara"
  file = "#{dir}/#{Time.now.strftime('%Y-%m-%d-%H-%M-%S')}.png"
  FileUtils.mkdir_p dir
  page.driver.render file
  wait_until { File.exists?(file) }
  system "open #{file}"
end

Yay Ruby!!

wait_until has been removed from capybara.

while !File.exists?(file) do
  sleep 1
end