From: Travis D Warlick Jr <warlickt@...>
Date: 2007-07-08T12:10:00+09:00
Subject: Re: get modules that are in a class?

Aaron Smith wrote:
> Wayne E. Seguin wrote:
>> On Jul 07, 2007, at 22:00 , Aaron Smith wrote:
>>> is it possible to find out what modules have been included inside of a
>>> class?
>>
>> Yes Aaron it is, via the method "included_modules"
>>
>> http://www.ruby-doc.org/core/classes/Module.html#M001697
> 
> What about within a class?
> 
> module TestModule
>   def say_something
>     puts "SOMETHING"
>   end
> end
> 
> class Test
>   include TestModule
> end
> 
> t = Test.new
> puts t.included_modules
> 

Remember that when you include the module, you're including _all_ the
module's methods (including Module#included_modules)

So, use self.class to get the Class object of the current instance (this
will work from the included modules also), so you should be able to do:

self.class.included_modules

And a debugging efficiency tip: use the Array#sort method with the
Module#included_modules to sort the list of included modules for easier
viewing.  I use this all the time in IRB. (This also works with
Class#methods and all the like)

irb(main):001:0> YourClass.methods.sort

--
  Travis Warlick
  Operis Systems, LLC
  Lead Developer