status_object.rb

class Success
  attr_reader :data
  def initialize(data)
    @data = data
  end
  
  def success?
    true
  end
end

class Error
  attr_reader :error
  def initialize(error)
    @error = error
  end
  
  def success?
    false
  end
end

class AuthorizationError < Error
  attr_reader :requesting_user
  def initialize(requesting_user, requested_clearance)
    @requesting_user = requesting_user
    @requested_clearance = requested_clearance
    super("User #{requesting_user.id} does not have required clearance level #{requested_clearance}")
  end
end

AuthorizationError.new(current_user, :admin)