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-rw-r--r--activesupport/lib/active_support/core_ext/object/singleton_class.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/singleton_class.rb b/activesupport/lib/active_support/core_ext/object/singleton_class.rb
new file mode 100644
index 0000000000..8dee54e71b
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/singleton_class.rb
@@ -0,0 +1,13 @@
+class Object
+ # Returns the object's singleton class.
+ def singleton_class
+ class << self
+ self
+ end
+ end unless respond_to?(:singleton_class)
+
+ # class_eval on an object acts like singleton_class_eval.
+ def class_eval(*args, &block)
+ singleton_class.class_eval(*args, &block)
+ end
+end