Hash#to_xml handles symbol values. Closes #9954.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7997 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Hash#to_xml handles symbol values.  #9954 [Assaf]
+
 * Hash#symbolize_keys behaves well with integer keys.  #9890 [PotatoSalad]
 
 * Multibyte: String#slice supports regexp argument.  #9646 [yob]

activesupport/lib/active_support/core_ext/hash/conversions.rb

@@ -47,6 +47,7 @@ module ActiveSupport #:nodoc:
     module Hash #:nodoc:
       module Conversions
         XML_TYPE_NAMES = {
+          "Symbol"     => "symbol",
           "Fixnum"     => "integer",
           "Bignum"     => "integer",
           "BigDecimal" => "decimal",
@@ -59,14 +60,18 @@ module ActiveSupport #:nodoc:
         } unless defined?(XML_TYPE_NAMES)
 
         XML_FORMATTING = {
+          "symbol"   => Proc.new { |symbol| symbol.to_s },
           "date"     => Proc.new { |date| date.to_s(:db) },
           "datetime" => Proc.new { |time| time.xmlschema },
           "binary"   => Proc.new { |binary| Base64.encode64(binary) },
           "yaml"     => Proc.new { |yaml| yaml.to_yaml }
         } unless defined?(XML_FORMATTING)
 
+        # TODO: use Time.xmlschema instead of Time.parse;
+        #       use regexp instead of Date.parse
         unless defined?(XML_PARSING)
           XML_PARSING = {
+            "symbol"       => Proc.new  { |symbol|  symbol.to_sym },
             "date"         => Proc.new  { |date|    ::Date.parse(date) },
             "datetime"     => Proc.new  { |time|    ::Time.parse(time).utc },
             "integer"      => Proc.new  { |integer| integer.to_i },

activesupport/test/core_ext/hash_ext_test.rb

@@ -336,13 +336,14 @@ class HashToXmlTest < Test::Unit::TestCase
   end
 
   def test_one_level_with_types
-    xml = { :name => "David", :street => "Paulina", :age => 26, :age_in_millis => 820497600000, :moved_on => Date.new(2005, 11, 15) }.to_xml(@xml_options)
+    xml = { :name => "David", :street => "Paulina", :age => 26, :age_in_millis => 820497600000, :moved_on => Date.new(2005, 11, 15), :resident => :yes }.to_xml(@xml_options)
     assert_equal "<person>", xml.first(8)
     assert xml.include?(%(<street>Paulina</street>))
     assert xml.include?(%(<name>David</name>))
     assert xml.include?(%(<age type="integer">26</age>))
     assert xml.include?(%(<age-in-millis type="integer">820497600000</age-in-millis>))
     assert xml.include?(%(<moved-on type="date">2005-11-15</moved-on>))
+    assert xml.include?(%(<resident type="symbol">yes</resident>))
   end
 
   def test_one_level_with_nils
@@ -416,6 +417,7 @@ class HashToXmlTest < Test::Unit::TestCase
         <parent-id></parent-id>
         <ad-revenue type="decimal">1.5</ad-revenue>
         <optimum-viewing-angle type="float">135</optimum-viewing-angle>
+        <resident type="symbol">yes</resident>
       </topic>
     EOT
 
@@ -432,7 +434,8 @@ class HashToXmlTest < Test::Unit::TestCase
       :author_email_address => "david@loudthinking.com",
       :parent_id => nil,
       :ad_revenue => BigDecimal("1.50"),
-      :optimum_viewing_angle => 135.0
+      :optimum_viewing_angle => 135.0,
+      :resident => :yes
     }.stringify_keys
 
     assert_equal expected_topic_hash, Hash.from_xml(topic_xml)["topic"]