Ensure new validates works with uniqueness validator.

1 files changed, 1 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/validations/associated.rb b/activerecord/lib/active_record/validations/associated.rb
index 66b78682ad..e41635134c 100644
--- a/activerecord/lib/active_record/validations/associated.rb
+++ b/activerecord/lib/active_record/validations/associated.rb
@@ -40,8 +40,7 @@ module ActiveRecord
       #   not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>).  The
       #   method, proc or string should return or evaluate to a true or false value.
       def validates_associated(*attr_names)
-        options = attr_names.extract_options!
-        validates_with AssociatedValidator, options.merge(:attributes => attr_names)
+        validates_with AssociatedValidator, _merge_attributes(attr_names)
       end
     end
   end