emberjs/data — pull request #559 by rykov (2012-12-29 04:51:49+00:00)
Title: Nested embedded loading fails to materialize records

One level of embedding works:

comment: { ... user: { ... }}

However, when you have an embedded record within another embedded record, the record is not correctly loaded into the store (`userGroup` in the example below).

comment: { ... user: { ... userGroup: {...}}}

I've included the failed unit tests that expose this issue