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-rw-r--r--activerecord/lib/active_record/serializers/xml_serializer.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/serializers/xml_serializer.rb b/activerecord/lib/active_record/serializers/xml_serializer.rb
index 28e9b3ddc6..693060f06e 100644
--- a/activerecord/lib/active_record/serializers/xml_serializer.rb
+++ b/activerecord/lib/active_record/serializers/xml_serializer.rb
@@ -271,6 +271,10 @@ module ActiveRecord #:nodoc:
decorations[:type] = type
end
+ if value.nil?
+ decorations[:nil] = true
+ end
+
decorations
end