How can a nested class access a method in the outer class in Ruby?

Question

def class A
  def a
    raise \"hi\" #can\'t be reached
  end

  class B
    def b
      a() #doesn\'t find method a.
    end
  end
end

I want to invok

Answer 1

If you want then nested class to extend the outer class, then do so:

class Outer

  class Inner < Outer
    def use_outer_method
      outer_method("hi mom!")
    end
  end

  def outer_method(foo)
    puts foo
  end

end

foo = Outer::Inner.new
foo.use_outer_method        #<= "hi mom"
foo.outer_method("hi dad!") #<= "hi dad"