Setting up a “to-many” relationship value dependency for a transient Core Data attribute?

I just postet a project on github which probably solves part of the problem with observings.

I just postet a project on github which probably solves part of the problem with observings github.com/mbrugger/CoreDataDependentPro... A more detailed description of the project can be found there. -(NSArray*) keyPathsForValuesAffecting would not have solved your problem as this only works across to-one relations In addition you should not make the dependent attribute transient, as it makes your context "dirty" (unsaved changes) already after recalculating all values after loading.

I like this approach. Much more elegant than the rat's nest of observations that I previously implemented. – Greg Combs Jun 27 '10 at 15:47.

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