Upgrading Ruby on Rails — Ruby on Rails Guides

This guide provides steps to be followed when you upgrade your applications to a newer version of Ruby on Rails. These steps are also available in individual release guides. 1 General AdviceBefore attempting to upgrade an existing application, you should be sure you have a good reason to upgrade. You need to balance several factors: the need for new features, the increasing difficulty of finding s

[junkpiano]

Try it later.

[two-pack]

"Rails 4.0 deprecated ActionController::IntegrationTest in favor of ActionDispatch::IntegrationTest."

[koudaiii]

Upgrading from Rails 4.1 to Rails 4.2

[iR3]

新しいRailsでは 環境変数 SECRET_KEY_BASE を設定しなければいけない問題 落とし穴