Is it possible to return a reference property in an App Engine computed property?
To do this you'd have to write your own custom Property subclass. You should be able to do so by examining the code behind ComputedProperty and ReferenceProperty; in effect you'd be combining the two.
I have a model with an attribute that is a reference to another model. The model it references depends on some logic. Is there a way to have a computed property that gives me the same ReferenceProperty niceties (reverse references, dereferencing)?
So far I the computed property stores a db.Key, but this is not optimal. Can I have a Computed 
Reference Property?