Rails - Jun 2009 - Problem with :touch in belongs_to

I''ve read in rails api that there is a touch parameter and I want to
use it in my application. I have something like that
class User < ActiveRecord::Base
  has_many :phones

  after_update :updated

  def updated
     ...
  end
end

class Phone < ActiveRecord::Base
  belongs_to :user, :touch => true
end

I want that every change of any phone number would change User
updated_at and also call user after_update callback.

But when I add :touch parameter I get error that looks like:

ArgumentError: Unknown key(s): touch
	from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
active_support/core_ext/hash/keys.rb:47:in `assert_valid_keys''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.2/lib/active_record/
associations.rb:1506:in `create_belongs_to_reflection''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.2/lib/active_record/
associations.rb:994:in `belongs_to''
	from (eval):3:in `belongs_to''
	from /Users/arkadiuszmlynarczyk/TapConference/app/models/phone.rb:2

On Jun 27, 10:29 am, Arkadiusz Młynarczyk
<a...-4RDwYL+ElVqsTnJN9+BGXg@public.gmane.org>
wrote:
> I''ve read in rails api that there is a touch parameter and I want
to
It''s not in rails 2.3.2.

Fred
> use it in my application. I have something like that
> class User < ActiveRecord::Base
>   has_many :phones
>
>   after_update :updated
>
>   def updated
>      ...
>   end
> end
>
> class Phone < ActiveRecord::Base
>   belongs_to :user, :touch => true
> end
>
> I want that every change of any phone number would change User
> updated_at and also call user after_update callback.
>
> But when I add :touch parameter I get error that looks like:
>
> ArgumentError: Unknown key(s): touch
>         from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
> active_support/core_ext/hash/keys.rb:47:in `assert_valid_keys''
>         from
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.2/lib/active_record/
> associations.rb:1506:in `create_belongs_to_reflection''
>         from
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.2/lib/active_record/
> associations.rb:994:in `belongs_to''
>         from (eval):3:in `belongs_to''
>         from /Users/arkadiuszmlynarczyk/TapConference/app/models/phone.rb:2