Can some one explain the code snippet given below in ruby ?

Posted by Vamsi on Stack Overflow See other posts from Stack Overflow or by Vamsi
Published on 2010-05-17T11:20:35Z Indexed on 2010/05/17 11:30 UTC
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ruby-on-rails

|

rails

class ApplicationController < ActionController::Base
  class InvalidParam < StandardError;end
end

What is the reason for including another class inside application controller?? What will be the behavior for other controllers?

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