Ruby on Rails 4.1 Release Notes — Ruby on Rails Guides

Highlights in Rails 4.1: Spring application preloader config/secrets.yml Action Pack variants Action Mailer previews These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the changelogs or check out the list of commits in the main Rails repository on GitHub. 1 Upgrading to Rails 4.1If you're upgrading an existing application, it's a great i

[iga_k]

Rails4.1で入ったユーザーエージェントでPC/SPなどのviewを出し分ける仕組み。request.variant に:phoneとか詰めればいい。 "request.variant = :tablet if request.user_agent =~ /iPad/" 判定して詰める部分は自分でやる必要あり。