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Ruby on Rails plugin. Fishes out the Accept-Language header into an array.
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http_accept_language.gemspec

README.md

HttpAcceptLanguage

A small effort in making a plugin which helps you detect the users preferred language, as sent by the HTTP header.

Features

  • Splits the http-header into languages specified by the user
  • Returns empty array if header is illformed.
  • Corrects case to xx-XX
  • Sorted by priority given, as much as possible.
  • Gives you the most important language
  • Gives compatible languages

See also: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

Example

class SomeController < ApplicationController

  def some_action

    request.user_preferred_languages # => [ 'nl-NL', 'nl-BE', 'nl', 'en-US', 'en' ]
    available = %w{en en-US nl-BE}
    request.preferred_language_from(available) # => 'nl-BE'

    request.user_preferred_languages # => [ 'en-GB']
    available = %w{en-US}
    request.compatible_language_from(available) # => 'en-US'

  end

end

Installation

Without Bundler

Install the gem http_accept_language, require it in your Rails app.

With Bundler

Add the gem to your Gemfile:

gem 'http_accept_language'

Run bundle install to install it.

Changelog

  • 2012-07-13: Sanitization for available locales and general clean up
  • 2011-09-11: 1.0.2 release, still works appearantly
  • 2010-01-05: Gem release
  • 2009-03-12: Rails 2.3 compatible

Released under the MIT license

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