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Getting Text and Currency Working for Multiple Language Support


In this conclusion to a four-part article series on adding support for multiple languages to a Ruby-on-Rails ecomerce application, you will learn how to localize numbers and currency, set character encoding, and more. This article is excerpted from chapter 10 of the book Practical Rails Projects, written by Eldon Alameda (Apress; ISBN: 1590597818).

Author Info:
By: Apress Publishing
Rating: 5 stars5 stars5 stars5 stars5 stars / 11
July 02, 2010
TABLE OF CONTENTS:
  1. · Getting Text and Currency Working for Multiple Language Support
  2. · Adding Unicode (UTF-8) Support
  3. · Setting Character Encoding in HTML
  4. · Setting Character Encoding for the HTTP Response
  5. · Changing the Database to Use UTF-8

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Getting Text and Currency Working for Multiple Language Support - Setting Character Encoding for the HTTP Response
(Page 4 of 5 )

Next, add a new after_filter to app/controllers/application.rb that sends the correct Content-Type HTTP header. Update app/controllers/application.rb as follows:

class ApplicationController < ActionController::Base
 
before_filter :set_locale
 
after_filter :set_charset

  private

  def set_charset
    headers["Content-Type"] = "text/html; charset=utf-8" if headers ?
["Content-Type"].blank?
  end

  def set_locale
    accept_lang = request.env['HTTP_ACCEPT_LANGUAGE']
    accept_lang = accept_lang.empty? ? nil : accept_lang[/[^,;]+/]

    locale = params[:locale] || session[:locale] || accept_lang || DEFAULT_LOCALE

Now, when a user accesses a page at the Emporium site, the following response header is sent to the browser:

Content-Type: text/html; charset=utf-8

This helps the browser in selecting the correct character encoding for displaying your page.


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