Make this less brittle and work on 1.8

actionpack/lib/action_view/base.rb

@@ -241,16 +241,16 @@ module ActionView #:nodoc:
       # they are in AC.
       if controller.class.respond_to?(:_helper_serial)
         klass = @views[controller.class._helper_serial] ||= Class.new(self) do
-          const_set(:CONTROLLER_CLASS, controller.class)
-
           # Try to make stack traces clearer
+          class_eval <<-ruby_eval, __FILE__, __LINE__ + 1
             def self.name
-            "ActionView for #{CONTROLLER_CLASS}"
+              "ActionView for #{controller.class}"
             end
 
             def inspect
               "#<#{self.class.name}>"
             end
+          ruby_eval
 
           if controller.respond_to?(:_helpers)
             include controller._helpers