Fixed that NumberHelper#number_to_delimiter should respect precision of higher than two digits (closes #6231) [phallstrom]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5249 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Fixed that NumberHelper#number_to_delimiter should respect precision of higher than two digits #6231 [phallstrom]
+
 * Fixed that FormHelper#radio_button didn't respect an :id being passed in #6266 [evansj]
 
 * Added an html_options hash parameter to javascript_tag() and update_page_tag() helpers #6311 [tzaharia]. Example:

actionpack/lib/action_view/helpers/number_helper.rb

@@ -71,10 +71,16 @@ module ActionView
       # Formats a +number+ with a +delimiter+.
       # Example:
       #    number_with_delimiter(12345678) => 12,345,678
-      def number_with_delimiter(number, delimiter=",")
-        number.to_s.gsub(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{delimiter}")
+      def number_with_delimiter(number, delimiter=",", separator=".")
+        begin
+          parts = number.to_s.split(separator)
+          parts[0].gsub!(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{delimiter}")
+          parts.join separator
+        rescue
+          number
+        end
       end
-
+      
       # Returns a formatted-for-humans file size.
       # 
       # Examples:

actionpack/test/template/number_helper_test.rb

@@ -31,6 +31,15 @@ class NumberHelperTest < Test::Unit::TestCase
 
   def test_number_with_delimiter
     assert_equal("12,345,678", number_with_delimiter(12345678))
+    assert_equal(nil, number_with_delimiter(nil))
+    assert_equal("0", number_with_delimiter(0))
+    assert_equal("123", number_with_delimiter(123))
+    assert_equal("123,456", number_with_delimiter(123456))
+    assert_equal("123,456.78", number_with_delimiter(123456.78))
+    assert_equal("123,456.789", number_with_delimiter(123456.789))
+    assert_equal("123,456.78901", number_with_delimiter(123456.78901))
+    assert_equal("123,456,789.78901", number_with_delimiter(123456789.78901))
+    assert_equal("0.78901", number_with_delimiter(0.78901))
   end
 
   def test_number_to_human_size