Add locale option to parameterize

Parameterize is triggering I18n#transliterate. This method already
accepts a locale. It would be cleaner if similar to other string inflection
methods #parameterize also accepted 'locale' as a parameter.

2 files changed, 14 insertions, 10 deletions

diff --git a/activesupport/lib/active_support/core_ext/string/inflections.rb b/activesupport/lib/active_support/core_ext/string/inflections.rb
index 8af301734a..e63b38b227 100644
--- a/activesupport/lib/active_support/core_ext/string/inflections.rb
+++ b/activesupport/lib/active_support/core_ext/string/inflections.rb
@@ -162,6 +162,11 @@ class String
 
   # Replaces special characters in a string so that it may be used as part of a 'pretty' URL.
   #
+  # If the optional parameter +locale+ is specified,
+  # the word will be parameterized as a word of that language.
+  # By default, this parameter is set to <tt>nil</tt> and it will use
+  # configured I18n.locale
+  #
   #   class Person
   #     def to_param
   #       "#{id}-#{name.parameterize}"
@@ -187,8 +192,8 @@ class String
   #
   #   <%= link_to(@person.name, person_path) %>
   #   # => <a href="/person/1-Donald-E-Knuth">Donald E. Knuth</a>
-  def parameterize(separator: "-", preserve_case: false)
-    ActiveSupport::Inflector.parameterize(self, separator: separator, preserve_case: preserve_case)
+  def parameterize(separator: "-", preserve_case: false, locale: nil)
+    ActiveSupport::Inflector.parameterize(self, separator: separator, preserve_case: preserve_case, locale: locale)
   end
 
   # Creates the name of a table like Rails does for models to table names. This method
diff --git a/activesupport/lib/active_support/inflector/transliterate.rb b/activesupport/lib/active_support/inflector/transliterate.rb
index 0d2a17970f..09e6cbeaaf 100644
--- a/activesupport/lib/active_support/inflector/transliterate.rb
+++ b/activesupport/lib/active_support/inflector/transliterate.rb
@@ -51,19 +51,18 @@ module ActiveSupport
     #
     # Now you can have different transliterations for each locale:
     #
-    #   I18n.locale = :en
-    #   transliterate('Jürgen')
+    #   transliterate('Jürgen', locale: :en)
     #   # => "Jurgen"
     #
-    #   I18n.locale = :de
-    #   transliterate('Jürgen')
+    #   transliterate('Jürgen', locale: :de)
     #   # => "Juergen"
-    def transliterate(string, replacement = "?")
+    def transliterate(string, replacement = "?", locale: nil)
       raise ArgumentError, "Can only transliterate strings. Received #{string.class.name}" unless string.is_a?(String)
 
       I18n.transliterate(
         ActiveSupport::Multibyte::Unicode.tidy_bytes(string).unicode_normalize(:nfc),
-        replacement: replacement
+        replacement: replacement,
+        locale: locale
       )
     end
 
@@ -89,9 +88,9 @@ module ActiveSupport
     #  parameterize("^très|Jolie-- ", separator: "_") # => "tres_jolie--"
     #  parameterize("^très_Jolie-- ", separator: ".") # => "tres_jolie--"
     #
-    def parameterize(string, separator: "-", preserve_case: false)
+    def parameterize(string, separator: "-", preserve_case: false, locale: nil)
       # Replace accented chars with their ASCII equivalents.
-      parameterized_string = transliterate(string)
+      parameterized_string = transliterate(string, locale)
 
       # Turn unwanted chars into the separator.
       parameterized_string.gsub!(/[^a-z0-9\-_]+/i, separator)