On Jan 9, 2007, at 8:30 AM, Josselin wrote:

> I can sort an array like that :
>
> results = rs.sort_by{|p| p.km}
>
> but I tried to add a scrond sorting criteria like that :
>
> results = rs.sort_by{|p| p.km, p.updated_at }

results = rs.sort_by { |p| [p.km, p.updated_at] }

Arrays can be sorted and will compare their contents in order, so  
this should do what you want.

Hope that helps.

James Edward Gray II