Ruby 1.9 compat: Hash is now flattenable, so explicitly exclude it

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/associations/association_proxy.rb b/activerecord/lib/active_record/associations/association_proxy.rb
index 981be3b1a9..99b8748a48 100644
--- a/activerecord/lib/active_record/associations/association_proxy.rb
+++ b/activerecord/lib/active_record/associations/association_proxy.rb
@@ -213,7 +213,7 @@ module ActiveRecord
 
         # Array#flatten has problems with recursive arrays. Going one level deeper solves the majority of the problems.
         def flatten_deeper(array)
-          array.collect { |element| element.respond_to?(:flatten) ? element.flatten : element }.flatten
+          array.collect { |element| (element.respond_to?(:flatten) && !element.is_a?(Hash)) ? element.flatten : element }.flatten
         end
 
         def owner_quoted_id