There has been a lot of confusion about this, but this is not true[1]. `find_by_xxx` and `find_by_xxx!` are not part of the deprecation.

1. http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.ht...

Nope: http://edgeguides.rubyonrails.org/4_0_release_notes.html#act...

That one is staying, most of the others are going (e.g. find_all_by_xxx, find_last_by_xxx)