Object#copy_instance_variables_from Ruby 1.9 compat

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7654 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 14 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 72eaed70b6..e07eb76c1d 100644
--- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb
+++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
@@ -5,4 +5,18 @@ class Object
       instance_variables.include?(variable.to_s)
     end
   end
+
+  def instance_values #:nodoc:
+    instance_variables.inject({}) do |values, name|
+      values[name.to_s[1..-1]] = instance_variable_get(name)
+      values
+    end
+  end
+
+  def copy_instance_variables_from(object, exclude = []) #:nodoc:
+    exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables
+
+    vars = object.instance_variables.map(&:to_s) - exclude.map(&:to_s)
+    vars.each { |name| instance_variable_set(name, object.instance_variable_get(name)) }
+  end
 end