From: Gunther Diemant <g.diemant@...>
Date: 2011-03-16T23:36:43+09:00
Subject: Re: Calling Ruby module methods from a nested class within

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Afaik there is no way to call an instance method of a module without
including it (or extending an Object with it).
But you can make expire_cache a module class method and then call it.

module GroupSweeper
  def self.expire_cache(paths)
    puts "dummy code"
  end
end

class Foo < Bar
  def baz(arg)
     GroupSweeper.expire_cache(arg)
  end
end

2011/3/16 mgerstenblatt@gmail.com <mgerstenblatt@gmail.com>

> Hi, Is there an alternative to calling a Module method from a nested
> class? The code:
>
> module GroupSweeper
>
>
>   def expire_cache(paths)
>
>     paths.each do |path|
>
>       expire_page(path)
>
>     end
>
>   end
>
>
>   class SweeperOne < ActionController::Caching::Sweeper
>
>     include GroupSweeper
>
>     observe Subject
>
>     def after_save(subject)
>
>       expire_cache([root_path,subjects_path])
>
>     end
>
>     def after_destroy(subject)
>
>       expire_cache([root_path,subjects_path])
>
>     end
>
>   end
>
>
> end
>
> How can I call GroupSweeper's expire_cache method from within
> SweeperOne without explicitely including it? Should I not be doing
> this?
>
>

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