screenshots.rake

namespace :scrape do
  desc "Take a screenshot of a url using Phantomjs"
  task :screenshots => :environment do
    asset = ActionController::Base.helpers.asset_path('screenshot.js.coffee')
    f = File.join(Rails.root, 'app', asset).gsub(/ /, '\ ')
    
    articles = Article.order('zscore DESC').limit(3)
    articles.each_with_index do |article, i|
      `phantomjs #{f} #{article.url} screenshot-#{i}`
    end
  end
end