Core data many-to-many relationship - Predicate question

Posted by Garry on Stack Overflow See other posts from Stack Overflow or by Garry
Published on 2010-02-24T18:45:10Z Indexed on 2010/03/30 6:33 UTC
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Filed under:

iphone

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cocoa

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cocoa-touch

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core-data

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entity-relationship

In my Core Data model I have two entities: List and Patient. List has an attribute called 'name'.

A List can have any number of Patients and each Patient can belong to any number of different lists. I have therefore set a relationship on List called 'patients' that has an inverse to-many relationship to Patient AND a relationship on Patient called 'lists' that has a to-many relationship to List.

What I'm struggling to figure out is how to create a Predicate that will select all Patients that belong to a particular List name.

How would I go about this? I have never used relationships before in Core Data.

Thanks,

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