Method Missing

methode_missing_ex.rb

class Foo

  MYMETHODS = ['van', 'car', 'bus']

  def foo(x)
    case x
    when 'van' then return 'Long vehicle'
    when 'car' then return 'Small vehicle'
    when 'bus' then return 'Very Long vehicle'
    else return 'None'
    end
  end

  MYMETHODS.each do |method|
    define_method method do
      foo(method)
    end
  end

  def method_missing(param)
    return "Method #{param} is not defined"
  end


end

o = Foo.new

puts o.van
puts o.car
puts o.bus
puts o.truck