alias-method

I've been trying to tinker with a global Cache module, but I can't figure out why this isn't working. Does anyone have any suggestions? This is the error: NameError: undefined method `get' for module `Cache' from (irb):21:in `alias_method' ... generated by this code: module Cache def self.get puts "original" end end module Cache def self.get_modified puts "New get" end end def peek_a_boo Cache.module_eval do # make :get_not_modified alias_method :get_not_modified, :get alias_method :get, :get_modified end Cache.get Cache.module_eval do alias_method :get, :get_not_modified end end # test first

When invoked via a method created by alias_method , __callee__ ignores the name of the old method (here xxx ) and returns the name of the new method, as below: class Foo def xxx() __callee__ end alias_method :foo, :xxx end Foo.new.foo # => :foo This behavior holds even when xxx is inherited from a superclass: class Sup def xxx() __callee__ end end class Bar < Sup alias_method :bar, :xxx end Bar.new.bar # => :bar Given both of the above, I would expect that the same behavior would hold when xxx is included via a module. However, that is not the case: module Mod def xxx() __callee__ end end

class Country < ActiveRecord::Base #alias_method :name, :langEN # here fails #alias_method :name=, :langEN= #attr_accessible :name def name; langEN end # here works end In first call alias_method fails with: NameError: undefined method `langEN' for class `Country' I mean it fails when I do for example Country.first . But in console I can call Country.first.langEN successfully, and see that second call also works. What am I missing? ActiveRecord uses method_missing (AFAIK via ActiveModel::AttributeMethods#method_missing ) to create attribute accessor and mutator methods the first time they're