When do I need to reload?

Hi, in this method update, after sort positions, at the block I haven't objetcs! and it's raised a nil object error...

  def update     positions = self.league_positions     positions.sort     positions.each do |pos, i|       pos.position = i + 1 <---------------- pos doesn't exists       pos.save     end     self.save   end

How could I resolve this?, Do I need to reload?, Which is the criteria I have to follow to reload objects?

  def update     positions = self.league_positions     positions.sort     positions.each do |pos, i|       pos.position = i + 1 <---------------- pos doesn't exists       pos.save     end     self.save   end

Sorry, I had some mistakes, but the once fixed I have the same results:

  def update     positions = self.league_positions     ordered_positions = positions.sort     i = 1     ordered_positions.each do |pos|       pos.position = i       i = i.next       pos.save     end     self.save   end

I think today I have to be quiet :)... not a good day. I have several mistakes, one of them was to name the method 'update', what a mistake!!! it made infinite loop!!

Now it works...

  def update_positions     positions = self.league_positions     ordered_positions = positions.sort     i = 1     ordered_positions.each do |pos|       pos.position = i       i = i.next       pos.save     end     self.save   end