From: dblack@...
Date: 2007-07-08T20:32:49+09:00
Subject: Re: get modules that are in a class?

Hi --

On Sun, 8 Jul 2007, Travis D Warlick Jr wrote:

> 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)

It's not exactly an inclusion thing.  Class objects already respond to
#included_modules, because Class inherits from Module.

> 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

That will work with any object:

   "".class.included_modules

etc.  It's not dependent on your having included a module.


David

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