assign_nested_attributes_for_collection_association should work with Ruby 1.9 [Closes #2106]

Children attributes can be either String's or Symbol's, so let's check if the object responds to to_i.

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/nested_attributes.rb b/activerecord/lib/active_record/nested_attributes.rb
index 53617059d0..69a8518ba0 100644
--- a/activerecord/lib/active_record/nested_attributes.rb
+++ b/activerecord/lib/active_record/nested_attributes.rb
@@ -383,7 +383,7 @@ module ActiveRecord
         attributes_collection = if keys.include?('id') || keys.include?(:id)
           Array.wrap(attributes_collection)
         else
-          attributes_collection.sort_by { |i, _| i.to_i }.map { |_, attributes| attributes }
+          attributes_collection.sort_by { |i, _| i.respond_to?(:to_i) ? i.to_i : i.object_id }.map { |_, attributes| attributes }
         end
       end