From: MaggotChild <hsomob1999@...>
Date: 2009-09-24T06:50:06+09:00
Subject: Re: Monkey Patching 2 Methods, Overrides One Method, Not The Other

On Sep 17, 5:02 am, "David A. Black" <dbl...@rubypal.com> wrote:
> I think I'd have to see
> code that exhibits the problem you're describing in order to analyze

This is suited for the Rails group, but the problem can be seen in its
simplest form here:

#config/initializers/ar_attributes.rb

module ActiveRecord
  module AttributeMethods

      alias_method :ar_read_attribute, :read_attribute
      def read_attribute(attr_name)
        p "read_override"
        ar_read_attribute(attr_name)
      end

      alias_method :ar_write_attribute, :write_attribute
      def write_attribute(attr_name, value)
        raise 'You made it!'
      end
  end
end

In the Rails console:

>> person.read_attribute :name
"read_override"
=> "Joe"
>> person.write_attribute :name, "Bilal"
=> "Bilal"
>> person.read_attribute :name
"read_override"
=> "Bilal"