screenshots.rake

namespace :scrape do
  desc "Take a screenshot of a url using Phantomjs"
  task :screenshots => :environment do
    require 'capybara'
    require 'poltergeist/capybara'
    include Capybara::DSL
    Capybara.default_driver = :poltergeist
    
    articles = Article.order('zscore DESC').limit(3)
    articles.each_with_index do |article, i|
      visit article.url
      screenshot_and_save_page
      sleep 4
    end
  end
end