NSPredicate for children

Question

Data model

I want to get all the processing that are children of this List object.

I am not sure that this can be done.

I have a TableView showing all the patients on the list. Each patient can have many procedures.

I have a link to the current list and you want to use this to somehow find children for children.

thanks

+4

ios fetch core-data nspredicate

Dogcoffee Sep 09 '13 at 11:35

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1 answer

Martin r · Accepted Answer · 2013-09-09T12:08:30+0000

Use a select query for a Processing object with a predicate

[NSPredicate predicateWithFormat:@"ofPatient.ofList = %@", currentList]

using the inverse relationship from "Treatment" → "Patient" → "List".