Hi Esteban, thank you for the solution with the VOMongoToOneDescription. This works perfect for me.
I have to come back to the circular references. I am not sure if this is a bug. I have the following model: Trip ->> Day <->> VehicleTrip One Trip has N Days. One Day has N VehicleTrips. The VehicleTrip points back to its Day. The Trip is voyageRoot. But I dont want Day or VehicleTrip to be voyageRoot, too. (In my opinion this does not make sense). If I try to save the trip, I get the endless loop. Attention, the Image freezes then. :-) How would you solve this? Also with the VOMongoToOneDescription solution? You can reproduce it with the fileout below. Regards Sabine This is the fileout: Object subclass: #Day instanceVariableNames: 'date vehicleTrips' classVariableNames: '' poolDictionaries: '' category: 'RKA24-Demo'! !Day methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 11:13'! date: anObject date := anObject! ! !Day methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 11:15'! vehicleTrips: anObject vehicleTrips := anObject! ! Object subclass: #VehicleTrip instanceVariableNames: 'day description' classVariableNames: '' poolDictionaries: '' category: 'RKA24-Demo'! !VehicleTrip methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 11:13'! day: anObject day := anObject! ! !VehicleTrip methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 11:14'! description: anObject description := anObject! ! Object subclass: #Trip instanceVariableNames: 'days description' classVariableNames: '' poolDictionaries: '' category: 'RKA24-Demo'! !Trip methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 11:14'! days: anObject days := anObject! ! !Trip methodsFor: 'accessing' stamp: 'sabineknoefel 8/12/2013 10:12'! description: anObject description := anObject! ! "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "! Trip class instanceVariableNames: ''! !Trip class methodsFor: 'as yet unclassified' stamp: 'sabineknoefel 8/12/2013 11:15'! demo |theTrip theDay theVehicleTrip| theTrip := Trip new description: 'Trip to Munic'. theDay := Day new date: Date today. theVehicleTrip := VehicleTrip new description: 'with car to fair'. theVehicleTrip day: theDay. theTrip days: (OrderedCollection with: theDay). theDay vehicleTrips: (OrderedCollection with: theVehicleTrip ). theTrip halt save ! ! !Trip class methodsFor: 'as yet unclassified' stamp: 'sabineknoefel 8/12/2013 09:47'! isVoyageRoot ^true! ! |theTrip theDay theVehicleTrip| theTrip := Trip new description: 'Trip to Munic'. theDay := Day new date: Date today. theVehicleTrip := VehicleTrip new description: 'with car to fair'. theVehicleTrip day: theDay. theTrip days: (OrderedCollection with: theDay). theDay vehicleTrips: (OrderedCollection with: theVehicleTrip ). theTrip inspect -- View this message in context: http://forum.world.st/Voyage-Circular-references-tp4691940p4703303.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.