1 files changed, 4 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
index e07eb76c1d..57276135c4 100644
--- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb
+++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
@@ -13,6 +13,10 @@ class Object
     end
   end
 
+  def instance_variable_names
+    instance_variables.map(&:to_s)
+  end
+
   def copy_instance_variables_from(object, exclude = []) #:nodoc:
     exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables