Core Data: Self referencing table

Question

I have an Entity in my Core Data model that contains a reference to itself. i.e. A Page can have a child collection of pages. When compiling i get the warning:

"Page.pages -- to-many relationship does not have an inverse: this is an advanced setting (no object can be in multiple destinations for a specific relationship)"

Now I have read that core data requires an inverse relationship to maintain integrity and would like to provide this. I don't mind my data model being changed it is an early stage of development. What is an appropriate way of dealing with this situation?

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Well, if the warning is that `Pages.pages` doesn't have an inverse relationship, have you tried adding an inverse relationship? (Maybe `Pages.parent`?) — Dave DeLong, Dec 20 '10 at 07:29
(self.feels.silly) exactly what i need, write it as an answer. — Aran Mulholland, Dec 20 '10 at 07:32
I don't need to do anything with inverse relationship, and no warning — onmyway133, Apr 03 '14 at 17:46

score 6 · Accepted Answer · answered Dec 21 '10 at 23:01

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(By request of @Aran)

Well, if the warning is that Pages.pages doesn't have an inverse relationship, have you tried adding an inverse relationship? (Maybe Pages.parent?)

answered Dec 21 '10 at 23:01

Dave DeLong

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score 0 · Answer 2 · answered Dec 20 '10 at 07:53

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Select the pages relationship and set the inverse relationship to pages also.

edit: nvm thats if a page has more than one parent.

answered Dec 20 '10 at 07:53

mackross

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Core Data: Self referencing table

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