rails/protected_attributes — pull request #15 by cwoodcox (2013-04-16 23:49:12+00:00)
Title: Replace REJECT_ALL_BLANK_PROC in NestedAttributes

There are existing issues (#8 and #11) that address this but nothing was
tested so it was never merged. There's a test here, but I'm not sure
this is the best way to go about it, but here's a PR anyway!