I have downloaded the latest RestKit version 0.9.3 from github and
noticed that the method mapFromKeyPath: toAttribute: has been removed
from RKObjectMapping. The method is used to nest attributes in the
Json body of the message.
Is there a replacement method or another way
of nesting attributes without the mapFromKeyPath method?
You need to read the new object mapping documentation. You can find it at here. Object mapping is very different now. The old docs (and tutorials) that are scattered about the web don’t work anymore.