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Ruby

Posted by simon lavery
simon lavery
17,485 Points

Can anyone explain self.included ?

I dont really get from the video what the self.included method is doing? I am able to use all the methods from the module before i write the method ?

1 Answer

Greg Yardley
Greg Yardley
4,236 Points
Greg Yardley
Greg Yardley
4,236 Points

The self.included method gets called whenever a module is included in another class, using the 'include' statement. If your module needs to be initialized somehow before it can be used, this a great place to put that code.

Here's an example:

module Apple
  def self.included(class_name)
    puts "Hi, I've been included by the #{class_name} class!"
  end
end

class Banana
  include Apple
end

As long as I didn't make any typos, this otherwise useless code should output "Hi, I've been included by the Banana class!"