pezra/hal-interpretation — pull request #7 by pezra (2014-12-05 21:53:28+00:00)
Title: Provide way to avoid uniqueness validation failures on updates

Calling `#only_update(existing_model)` on an interpreter will cause it update `existing_model` rather than creating a new model. It will also cause the interpretation to fail if the json contains more than one representation.