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Release notes for Rails 4.0. …Rails Internationalization (I18n) API. The Ruby I18n (shorthand for internationalization) gem which is shipped with Ruby on Rails (starting from Rails 2.2) provides an easy-to-use and extensible framework for translating your application to a single custom language other than English or for providing multi-language support in your application.Although most Rails models are backed by a database, models can also be ordinary Ruby classes, or Ruby classes that implement a set of interfaces as provided by the Active Model module. View layer The View layer is composed of “templates” that are responsible for providing appropriate representations of your application’s resources.Aug 30, 2011 · Instantiate the equivalent Ruby object of the appropriate model for every resulting row. Run after_find and then after_initialize callbacks, if any. 2.1 Retrieving a Single Object. 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