command_query_1.rb

class Television < ActiveModel
  def turned_off?
    !turned_on
  end
end

class TelevisionRemote
  attr_reader :television

  def initialize(television)
    @television = television
  end

  def turn_on!(television)
    # Voilation of Tell, Don't ask
    if television.turned_off?
      telveison.turned_on = true
      television.save!
    else
      television
    end
  end
end

television = Television.current
TelevisionRemote.new(television).turn_on!