rails/rails — pull request #6594 by erichmenge (2012-06-01 19:40:01+00:00)
Title: Backport cache key patch

Backport of be623677 #5394

When I made that PR 3 months ago I wasn't sure what the procedure was regarding backports. I believe this should be backported as I don't believe anyone is using cache_key and expecting to get the encoded object id on instances of `ActiveRecord::Relation` for example.

In that way I feel that it is more on the side of 'bugfix' vs change of behavior.