changed xml type datetime to dateTime, fixes #6328

XmlMini define the xml 'datatime', but according to
http://www.w3.org/TR/xmlschema-2/#dateTime could be better
change this to 'dateTime' with upper case letter 'T.
So 'DateTime' and 'Time' are redefined from 'datetime' to 'dateTime'

add the changing to the changelog

4 files changed, 11 insertions, 8 deletions

diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index c1fef1b9d9..dace2f81f5 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Changed xml type `datetime` to `dateTime` (with upper case letter `T`). *Angelo Capilleri*  
+
 *   Add `:instance_accessor` option for `class_attribute`. *Alexey Vakhov*
 
 *   `constantize` now looks in the ancestor chain. *Marc-Andre Lafortune & Andrew White*
diff --git a/activesupport/lib/active_support/core_ext/hash/conversions.rb b/activesupport/lib/active_support/core_ext/hash/conversions.rb
index 469dc41f2d..43ba05a256 100644
--- a/activesupport/lib/active_support/core_ext/hash/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/hash/conversions.rb
@@ -57,8 +57,8 @@ class Hash
   #       "TrueClass"  => "boolean",
   #       "FalseClass" => "boolean",
   #       "Date"       => "date",
-  #       "DateTime"   => "datetime",
-  #       "Time"       => "datetime"
+  #       "DateTime"   => "dateTime",
+  #       "Time"       => "dateTime"
   #     }
   #
   # By default the root node is "hash", but that's configurable via the <tt>:root</tt> option.
diff --git a/activesupport/lib/active_support/xml_mini.rb b/activesupport/lib/active_support/xml_mini.rb
index 677e9910bb..88e18f6fff 100644
--- a/activesupport/lib/active_support/xml_mini.rb
+++ b/activesupport/lib/active_support/xml_mini.rb
@@ -39,8 +39,8 @@ module ActiveSupport
       "TrueClass"  => "boolean",
       "FalseClass" => "boolean",
       "Date"       => "date",
-      "DateTime"   => "datetime",
-      "Time"       => "datetime",
+      "DateTime"   => "dateTime",
+      "Time"       => "dateTime",
       "Array"      => "array",
       "Hash"       => "hash"
     } unless defined?(TYPE_NAMES)
@@ -48,7 +48,7 @@ module ActiveSupport
     FORMATTING = {
       "symbol"   => Proc.new { |symbol| symbol.to_s },
       "date"     => Proc.new { |date| date.to_s(:db) },
-      "datetime" => Proc.new { |time| time.xmlschema },
+      "dateTime" => Proc.new { |time| time.xmlschema },
       "binary"   => Proc.new { |binary| ::Base64.encode64(binary) },
       "yaml"     => Proc.new { |yaml| yaml.to_yaml }
     } unless defined?(FORMATTING)
@@ -111,6 +111,7 @@ module ActiveSupport
         type_name ||= TYPE_NAMES[value.class.name]
         type_name ||= value.class.name if value && !value.respond_to?(:to_str)
         type_name   = type_name.to_s   if type_name
+        type_name   = "dateTime" if type_name == "datetime"
 
         key = rename_key(key.to_s, options)
 
@@ -145,7 +146,7 @@ module ActiveSupport
       "#{left}#{middle.tr('_ ', '--')}#{right}"
     end
 
-	  # TODO: Add support for other encodings
+    # TODO: Add support for other encodings
     def _parse_binary(bin, entity) #:nodoc:
       case entity['encoding']
       when 'base64'
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 8239054117..0b0e7da4a5 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -672,8 +672,8 @@ class HashToXmlTest < ActiveSupport::TestCase
       :created_at => Time.utc(1999,2,2),
       :local_created_at => Time.utc(1999,2,2).in_time_zone('Eastern Time (US & Canada)')
     }.to_xml(@xml_options)
-    assert_match %r{<created-at type=\"datetime\">1999-02-02T00:00:00Z</created-at>}, xml
-    assert_match %r{<local-created-at type=\"datetime\">1999-02-01T19:00:00-05:00</local-created-at>}, xml
+    assert_match %r{<created-at type=\"dateTime\">1999-02-02T00:00:00Z</created-at>}, xml
+    assert_match %r{<local-created-at type=\"dateTime\">1999-02-01T19:00:00-05:00</local-created-at>}, xml
   end
 
   def test_multiple_records_from_xml_with_attributes_other_than_type_ignores_them_without_exploding