Globalize3 is a Ruby on Rails gem that adds model translations to ActiveRecord, allowing attributes of models to be translated into multiple languages. It works by generating translation tables for models where attributes are marked for translation, and provides helpers for migrating existing data into the translation tables. The gem is compatible with Rails 3.x and builds on the new I18n API. It also supports fallback translations for empty translations.

1. Globalize3
Nguyễn Văn Dũng
Framgia Việt Nam

2. Content
● What Is It?
● How Does It Work?
● Model translations?
● Migrating existing data to and from the translated version?
● I18n fallbacks for empty translations?
● Demo

3. What Is It?
● Globalize3 is the successor of Globalize for Rails and is
targeted at ActiveRecord version 3.x. It is compatible with
and builds on the new I18n API in Ruby on Rails and
adds model translations to ActiveRecord.

4. How Does It Work?
● First we’ll add it to the list of gems in the gemfile:
gem 'globalize3'

5. Model translations ?
● We can go to the model we want to translate
and use the translates method to specify the
names of the columns we want to be available in
multiple languages, in our case the name and
content columns in Article.
● /app/models/article.rb
● class Article < ActiveRecord::Base
translates :name, :content
end

6. Migrating existing data to and from
the translated version?
● In order to make this work, you'll need to add the
appropriate translation tables. Globalize3 comes with a
handy helper method to help you do this. It's called
create_translation_table!. Here's an example:
● $ rails g migration create_article_translations

7. class CreateArticleTranslations < ActiveRecord::Migration
def up
Article.create_translation_table!({
name: :string,
content: :text
}, {
migrate_data: true
})
end
def down
Article.drop_translation_table! migrate_data: true
end
end

8. I18n fallbacks for empty
translations?
/config/application.rb
config.i18n.fallbacks = true

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