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Asked: 2026-06-05T15:26:48+00:00

I’m using GAE with python and I came across this problem, I’m trying to

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I’m using GAE with python and I came across this problem, I’m trying to do something like this:

db.delete(db.Query(StudentVote).filter('topic.lecture = ', lecture))

and

db.delete(db.Query(StudentVote).filter('topic.lecture.course.owner = ', owner))

I try to delete a group of entities, each one have a topic property which has lecture property and so on.

StudentVote-> topic-> lecture-> course->
owner

But the query doesn’t work, is there any way to filter that way? a or what is the best practice acomplish this functionality?

Thanks advanced, Gal.

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1 Answer

  1. Editorial Team

    If this is a common query, you’d want to put the owner as an indexed property in the StudentVote. This would make your writes a bit more expensive, but it would let you query by owner. Otherwise, if it’s rare and performance is not a problem, you could manually query through the chain.

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