Added the ability to allow users to set a local_aliases option on the…

… locale filter that allows a hash of locale aliases to be passed such as :locale_aliases => {'en-UK' => 'UK', 'fr' => 'France'} this would allow URL's such as http://example.com/UK to use the en-UK locale and also generate links to the alias. The aliases will also be case insensitive.

Signed-off-by: Sven Fuchs <svenfuchs@artweb-design.de>

lib/routing_filter/locale.rb

@@ -5,6 +5,9 @@ module RoutingFilter
   class Locale < Base
     @@include_default_locale = true
     cattr_writer :include_default_locale
+
+    @@locale_aliases = {}
+    @@reverse_aliases = nil
 
     class << self
       def include_default_locale?
@@ -20,7 +23,7 @@ def locales=(locales)
       end
 
       def locales_pattern
-        @@locales_pattern ||= %r(^/(#{self.locales.map { |l| Regexp.escape(l.to_s) }.join('|')})(?=/|$))
+        @@locales_pattern ||= /^\/(#{self.locales.concat(@@locale_aliases.values).map { |l| Regexp.escape(l.to_s) }.join('|')})(?=\/|$)/i
       end
     end
 
@@ -48,7 +51,8 @@ def around_generate(*args, &block)
 
       def extract_locale!(path)
         path.sub! self.class.locales_pattern, ''
-        $1
+        @@reverse_aliases ||= Hash[*@@locale_aliases.map{|k,v| [v.downcase,k]}.flatten]
+        @@reverse_aliases[$1.downcase] || $1 if $1
       end
 
       def prepend_locale?(locale)
@@ -64,6 +68,7 @@ def default_locale?(locale)
       end
 
       def prepend_locale!(url, locale)
+        locale = @@locale_aliases[locale] || locale
         url.sub!(%r(^(http.?://[^/]*)?(.*))) { "#{$1}/#{locale}#{$2}" }
       end
   end