ahoward/mongoid_rails_migrations — comment on commit 8a25dfecffb0f868cc14851f3a9f86c13ddff876
File:  line 0
By ahoward:

I am sorry, App.uuid is not meant to be included.

Testing across the versions would be very hard to say the least. There is commentary in the mongoid repo with @duran and I regarding the preferred approaches over time... but I couldn't say which versions. I do know that this code will NOT run in mongoid 2.2.3 without this patch and that older versions should not be affected due to defined? clauses... I'll nuke this pull request and submit another. If you have a preferred strategy for testing across mongoid versions let me know: I unware of an easy way to do this...