Rails3レシピブック外伝 https://speakerdeck.com/u/a_matsuda/p/rails3-recipe-book-gaiden 118ページ Engineを使う 使いやすくなった Rails 3.1 の Engine http://d.hatena.ne.jp/passingloop/20110801/p1 Rails Guides - Getting Started with Engines http://guides.rubyonrails.org/engines.html Extending Rails 3 with Railties http://www.engineyard.com/blog/2010/extending-rails-3-with-railties/ 日本語訳 http://www.engineyard.co.jp/blog/2013
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