Created: 2008-11-12 11:11
Updated: 2019-02-19 12:17
License: mit



A Rails plugin that generates the I18n locale files with automatic translation. Supporting Rails 6.0, 5.2.x, 5.1.x, 5.0.x, 4.2.x, 4.1.x, 4.0.x, 3.2.x, 3.1.x, 3.0.x, 2.3.x, and 2.2.x.

Here's an example of generating a translation file (the example model is taken from the Rails Girls app).

% rails g scaffold idea name description:text picture
% rails g i18n ja



This gem/plugin provides following three generator commands.

1. Generate Locale Files for ActiveRecord/ActiveSupport/ActionPack/ActionView

% rails g i18n_locale ja (de-AT, pt-BR, etc.)

Downloads the .yml file for the specified locale from the official rails-i18n repository: https://github.com/svenfuchs/rails-i18n/tree/master/rails/locale

Then the generator sets the application default locale to the specified locale.

This will generate following locale file.


2. Generate Translation YAML File For All Models/Attributes

% rails g i18n_translation ja (de-AT, pt-BR, etc.)

This will generate following YAML file.


The generator scans your app/models directory, and generates a YAML file with all the AR model names and attributes so that you don't have to write the YAML skeleton manually. In addition, the generator tries to translate each of them into the specified language. The generator doesn't overwrite the existing value so that you can rerun the generator again and again.

The #g mark in the generated YAML means that the line is generated by the generator.

3. Generate All

% rails g i18n ja (de-AT, pt-BR, etc.)

Executes 1 and 2 at once.

Supported versions

  • Ruby 2.7, 2.6.x, 2.5.x, 2.4.x, 2.3.x, 2.2.x, 2.1.x, 2.0.0, 1.9.x, 1.8.7
  • Ruby on Rails 6.0, 5.2, 5.1, 5.0, 4.2, 4.1, 4.0, 3.2, 3.1, 3.0
  • Ruby on Rails 2.3, 2.2 (supported by i18n_generators < 1.2)


  • Rails 3 or higher (with Bundler)

Add 'i18n_generators' to your Gemfile, then bundle. Restricting the group to :development would be a good idea, since the generator would probably be used only in development mode.

  • Rails 2

Use 'i18n_generators' version '< 1.2'.


Copyright (c) 2008 Akira Matsuda, released under the MIT license

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