gistfile1.txt

  reorderTicket: (first_id, order, second_id) ->
    tickets = @get('tickets').sortBy('position')
    ticket_ids = tickets.mapBy('id').removeObject(first_id)
    second_pos = ticket_ids.indexOf(second_id)
    new_pos = if order == 'above' then second_pos else second_pos+1
    ticket_ids.splice(new_pos, 0, first_id)
    for ticket_id, position in ticket_ids
      ticket = tickets.findBy('id', ticket_id)
      ticket.set('position', position)