schmittjoh/JMSSerializerBundle — pull request #215 by morgen2009 (2012-11-04 22:02:29+00:00)
Title: DoctrineExclusionStrategy

DoctrineExclusionStrategy means
* serialization: if entity's id is not null (or not zero), then serialize only the identificator
* deserialization: DoctrineObjectConstructor restores entity from DB using identificator (already implemented)

Also I fixed a bit GraphNavigator.php in the case, if the element is null (use case is some properties of entity are null or omited)