1 files changed, 16 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/delegation.rb b/activesupport/lib/active_support/core_ext/module/delegation.rb
new file mode 100644
index 0000000000..95173007ca
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/module/delegation.rb
@@ -0,0 +1,16 @@
+class Module
+  def delegate(*methods)
+    options = methods.pop
+    unless options.is_a?(Hash) && to = options[:to]
+      raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key"
+    end
+
+    methods.each do |method|
+      module_eval(<<-EOS, "(__DELEGATION__)", 1)
+        def #{method}(*args, &block)
+          #{to}.__send__(#{method.inspect}, *args, &block)
+        end
+      EOS
+    end
+  end
+end
+\ No newline at end of file