Array#to_xml yields the builder just like Hash and ActiveRecord::Base. Closes #8472.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6858 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Array#to_xml yields the builder just like Hash and ActiveRecord::Base.  #8472 [seth]
+
 * Date, Time, and DateTime support formatting blocks in addition to strftime strings. Introduce :long_ordinal format, e.g. "February 21st, 2005".  #8191 [Coda Hale]
 
 * Document Object#blank?.  #6491 [Chris Mear]

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

@@ -63,7 +63,10 @@ module ActiveSupport #:nodoc:
 
           opts = options.merge({ :root => children })
 
-          options[:builder].tag!(root) { each { |e| e.to_xml(opts.merge!({ :skip_instruct => true })) } }
+          options[:builder].tag!(root) {
+            yield options[:builder] if block_given?
+            each { |e| e.to_xml(opts.merge!({ :skip_instruct => true })) }
+          }
         end
 
       end

activesupport/test/core_ext/array_ext_test.rb

@@ -179,4 +179,15 @@ class ArrayToXmlTests < Test::Unit::TestCase
     assert_match(/^<\?xml [^>]*/, xml)
     assert_equal 0, xml.rindex(/<\?xml /)
   end
+  
+  def test_to_xml_with_block
+    xml = [
+      { :name => "David", :age => 26, :age_in_millis => 820497600000 },
+      { :name => "Jason", :age => 31, :age_in_millis => BigDecimal.new('1.0') }
+    ].to_xml(:skip_instruct => true, :indent => 0) do |xml|
+      xml.count 2
+    end
+    
+    assert xml.include?(%(<count>2</count>)), xml
+  end
 end