Colin Law wrote: > On 27 August 2010 16:31, Marnen Laibow-Koser <[email protected]> > wrote: >>> cars = UsedCar.find(:all, :order => :price) >>> or to get just the cheapest >>> cheapest_car = UsedCar.find(:all, :order => :price).first >> >> That will still retrieve all the records. �You want find :first, not >> find :all. > > Yes of course, my mistake. Though in fact rails could be clever > enough to work out from the statement find(:all).first that it only > needs to fetch the first one.
I have the impression that Arel may do things like that, but 2.x ActiveRecord does not. > There is a limit to the magic it can > sensibly perform however, and I was trying to push it beyond that > limit. :) > > Colin Best, -- Marnen Laibow-Koser http://www.marnen.org [email protected] -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
