I would not recommend using a default scope on an ActiveRecord model for sorting.
Start your Rails console and try Model.find(1). This will result into: SELECT models.* FROM models WHERE models.id=1 ORDER BY id DESC LIMIT 1 This ORDER BY will be included in every unneccessary query. The above query will be slower in MySQL than without the ORDER BY clause. Try it yourself! Create a normal scope and include it with every query where you expect more than 1 record as a result. In case you consider a mixin try http://api.rubyonrails.org/classes/ActiveSupport/Concern.html -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/a472a643-672c-40f9-9d81-4678a236cc5d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

