kind of a proxy - relay . an adapter

proxy.rb

class Foo
   attr_reader :a, :b
   def initialize params={}
     params.each {
        |k,v|
        instance_variable_set "@#{k}", v
     }
   end

   def yay; puts "Yay"; end
end


class FooProxy

    attr_accessor :foo

    def initialize(params={})
      @foo = params["foo"] || Foo.new(params) 
    end


    def method_missing(meth, *args, &bl)
       if @foo.respond_to?(meth); @foo.send(meth);else; puts "#{meth} does_not exist";end
    end
end


#### main
p = FooProxy.new(a: 1, b: 2)
%w{a b yay}.each{
|meth| p.send(meth)
}