emberjs/data — pull request #258 by bradleypriest (2012-05-17 03:11:27+00:00)
Title: Make DS.attr("date") accept a user inputted string as a date

Currently you can't set an DS date attribute on a DS.model from a user input as it expects a JS Date object.

I'm not sure if this is the best implementation (should probably handle invalid dates) but now you can set a date in any format the JS Date object accepts.