act_as_list, each event has his own postion list

Hi,
This is my project -> https://github.com/regedarek/ekorezerwacja
This is my page -> http://ekorozwoj.heroku.com/events/1

I use act_as_list
[code=ruby]class User < ActiveRecord::Base
has_many :seats
has_many :events, :through => :seats
end
class Event < ActiveRecord::Base
  has_many :seats
  has_many :users, :through => :seats
end
class Seat < ActiveRecord::Base
  belongs_to :user
  belongs_to :event
end[/code]

I have problem with single :position column for all events.
How to sort my users in each own event.
Please help.

I have problem with single :position column for all events.
How to sort my users in each own event.
Please help.

Are you looking for acts_as_list's :scope option?

Fred