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Asked: 2026-05-20T21:07:49+00:00

I am writing an app that allows the user to create a questionnaire, then

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I am writing an app that allows the user to create a “questionnaire”, then add questions to it. I am using core data to store the info. I have created a questionnaire entity and have a “one to many” relationship with question entities. My question is, if want to allow the user to duplicate (copy) an entire questionnaire, questions and all what’s the best way to do that?

So to be clear:

I have:

Questionnaire record —> Question 1 record – Question 2 record – Question 3 record

and I want the user to be able to duplicate this and end up with this:

Questionnaire record —> Question 1 record – Question 2 record – Question 3 record

Questionnaire (copy) record —> Question 1 record – Question 2 record – Question 3 record

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1 Answer

  1. Editorial Team

    You said you want to duplicate an entire questionnaire, so assuming what you want is actually something like this:

    Questionnaire —> Question 1 – Question 2 – Question 3

    Questionnaire (copy) —> Question 1 (copy) – Question 2 (copy) – Question 3 (copy)

    Then what you need is a deep copy. You can write something based on this NSManagedObject category, assuming you set your relationship’s ownership rules properly on your data model.

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