Force id to be proxied to the model

lib/draper/base.rb

@@ -5,7 +5,7 @@ module Draper
     attr_accessor :context, :model
 
     DEFAULT_DENIED = Object.new.methods << :method_missing
-    FORCED_PROXY = [:to_param]
+    FORCED_PROXY = [:to_param, :id]
     FORCED_PROXY.each do |method|
       define_method method do |*args, &block|
         model.send method, *args, &block

spec/base_spec.rb

@@ -74,6 +74,11 @@ describe Draper::Base do
       Draper::Base.new(source).to_param.should == 1
     end
 
+    it "should always proxy id" do
+      source.send :class_eval, "def id; 123456789; end"
+      Draper::Base.new(source).id.should == 123456789
+    end
+
     it "should not copy the .class, .inspect, or other existing methods" do
       source.class.should_not == subject.class
       source.inspect.should_not == subject.inspect