I18nAccessors

Define locale accessors for your translated attributes. Extracted from Mobility; works with Globalize and other translation gems.

Installation

Add this line to your application's Gemfile:

gem 'i18n_accessors', '~> 1.0.0'

And then execute:

$ bundle

Or install it yourself as:

$ gem install i18n_accessors

Usage

Accessor Methods

To define a set of accessors for a translated attribute of the form <attribute>_<locale>, include an instance of the I18nAccessors::Methods class in your model with translated attribute names as arguments:

class Post

  def title
    # ...
  end

  def title?
    # ...
  end

  def title=(title)
    # ...
  end

  include I18nAccessors::Methods.new(:title)
end

By default, I18n.available_locales will be used to determine which locales to define accessors for. So if I18n.available_locales is [:en, :fr], then this will define methods: title_en, title_en?, title_en=, title_fr, title_fr? and title_fr=. Each of these methods is an alias to title (or title?, or title=) with I18n.locale changed to the locale in the suffix.

If you want to specify explicitly which locales to define accessors for, pass the locales as an option with the locales key to new when creating the module:

def Post

  # ...

  include I18nAccessors::Methods.new(:title, :content, locales: [:en, :fr])
end

This will define accessor methods for both title and content, in both English (en) and French (fr).

Method Missing

I18nAccessors::Missing does a similar thing, but using method_missing to respond to messages of the form <attribute>_<locale>. This is generally slower (due to how method_missing works), but can be used to handle any locale:

class Post

  # ...

  include I18nAccessors::Missing.new(:title, :content)
end

You can include both a I18nAccessors::Methods module and a I18nAccessors::Missing module in the same class without conflict (the accessor methods will take precedence).

Configuration

If you are using I18nAccessors with Globalize, you can change the default i18n class to Globalize:

I18nAccessors.configure do |config|
  config.i18n_class = Globalize
end

With this configuration, Globalize.with_locale will be used to set the locale around the accessor methods, rather than I18n.with_locale.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/shioyama/i18n_accessors. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.