I've seen a number of blog posts claiming all dynamic find_by_attribute methods are deprecated come Rails4 (with extraction to a gem). However, the Rails release notes specify that some of the API remains: http://edgeguides.rubyonrails.org/4_0_release_note... There was initial confusion in this pull request over what all was deprecated: https://github.com/rails/rails/pull/8989 The comments there seem to indicate find_by_attribute_and_other_attribute will be deprecated but find_by_attribute is not; the Rails release note doesn't seem to go that far. I think it's worth getting clarity on this, and then maybe I (or somebody) can make it more explicit in the notes if need be.
on 2013-01-28 12:44