rails/rails — pull request #18032 by claudiob (2014-12-15 03:33:50+00:00)
Title: Add test for after_validation returning false

This stems from https://github.com/rails/rails/pull/17227#discussion_r21641358

It's simply a clarification of the current behavior by which if an
`after_validation` callback returns `false`, then further `after_`
callbacks **are not halted**.