From: Robert Klemme <bob.news@...>
Date: 2005-11-05T06:42:09+09:00
Subject: Re: Class and Mixin with same method name problem

petermichaux@yahoo.com wrote:
> Robert Klemme wrote:
>> petermichaux@yahoo.com wrote:
>>> How do I call the Burp whoAmI? method?
>>
>> You don't (although you could with
>> Burp.instance_method(:whoAmI?).bind(self).call).  Messing like this
>> with names is not advisable.
>
> Good to know that there is a way to do this. Too bad it is so messy
> though. I'm thinking about using two Rails plugins in one model class.
> Since rails has a magic after_find callback method I was thinking
> about using this in each plugin since the plugins can be used
> independently. Since my model must call both of these methods I will
> have a third after_find callback method in the model that calls the
> other two.

I don't know Rails so I can't comment on this.  I just would assume that DHH 
would have thought of this scenario.  At least it sounds reasonable.  Or 
you're abusing these plugins.

> Now why doesn't the example below make two who_am_i calls?
> One to Burp and one to Debug. It only calls Burp.

Wrong.  Look again. :-)

>> Note also that by
>> convention a) methods ending in a question mark are reserved for
>> boolean
>> queries and b) Ruby uses lowe_case_method_names. :-)
>
> Good to know. I just cut and pasted the example from the the first
> edition of Ruby Programming
>
> http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html

Indeed.  Then that's a sub optimal example. :-)

> Peter
>
>
> module Debug
>  def who_am_i
>    "Debug"
>  end
> end
>
> module Burp
>  def who_am_i
>    "Burp"
>  end
> end
>
> class EightTrack
>  include Burp
>  include Debug
>  def who_am_i
>    Debug.instance_method(:who_am_i).bind(self).call
>    Burp.instance_method(:who_am_i).bind(self).call
>  end
> end
>
> et = EightTrack.new
>
> p et.who_am_i

Kind regards

    robert