fewer

Fewer

Fewer is a Rack endpoint to bundle and cache assets and help you make fewer HTTP requests. Fewer extracts and combines a list of assets encoded in the URL and serves the response with far-future HTTP caching headers.

How to use in Rails 3

Using Fewer in your Rails app is easy, just initialize your Fewer apps and add them to your routes then include the helper methods in your ApplicationHelper with a one-liner.

# Gemfile
gem 'fewer'
gem 'closure-compiler', :group => :production

# config/initializers/fewer.rb
Fewer::App.new(:javascripts,
  :engine => Fewer::Engines::Js,
  :engine_options => { :min => Rails.env.production? }
  :root => Rails.root.join('app', 'javascripts')
)
Fewer::App.new(:stylesheets,
  :engine => Fewer::Engines::Css,
  :root => Rails.root.join('app', 'stylesheets')
)

# config/routes.rb
match '/javascripts/*data.js', :to => Fewer::App[:javascripts]
match '/stylesheets/*data.css', :to => Fewer::App[:stylesheets]

# app/helpers/application_helper.rb
module ApplicationHelper
  include Fewer::RailsHelpers
end

# app/views/layouts/application.html.erb
<%= fewer_javascripts_tag 'long', 'list', 'of/nested', 'js/files' %>
<%= fewer_stylesheets_tag 'some', 'css', 'files' %>

How to use as a Rack app (config.ru example)

app = Rack::Builder.new do
  map '/stylesheets' do
    run Fewer::App,
      :root => File.dirname(__FILE__)+'/less_css',
      :engine => Fewer::Engines::Less
  end

  map '/' do
    run MyApp
  end
end

run app

Copyright

Copyright (c) 2010 Ben Pickles. See LICENSE for details.