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PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
 

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  1. PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
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    <p>I have iOS application which uses core data database and im using NSFetchedResultsController for populate a tableview. Im using entity named "Catalog" to populate tablview and i have thumbnail image stored in entity Named "Image" and i store image as NSData in a property of image entity, im updating that thumbnail image after populating the tableview but any of bellow methods not called.</p> <ul> <li>(void)controllerWillChangeContent:(NSFetchedResultsController *)controller</li> <li>(void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath</li> <li>(void)controller:(NSFetchedResultsController *)controller didChangeSection:(id )sectionInfo atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type </li> <li><p>(void)controllerDidChangeContent:(NSFetchedResultsController *)controller</p></li> <li><p>But when i change a properties of "Catalog" entity itself those methods called.</p></li> </ul> <h1>Informations of My Entities</h1> <h1>Catalog(Entity)</h1> <p>Attributes</p> <p>title &lt;= String nid &lt;= String (my primary key field) some few attributes</p> <h2>Relationships</h2> <p>Relationship :thumbImage, Destination :Image, Inverse :catalog,</p> <h1>Image(Entity)</h1> <p>Attributes fid &lt;= String (my primary key field), image &lt;= Image Data field</p> <h2>Relationships</h2> <p>Relationship :catalog, Destination :Catalog, Inverse :thumbImage</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. USChathuranga Jayawardhana
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
      1. USSteven Chu
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    1. COHave u set the delegate? e.g typically like this `_fetchedResultsController.delegate = self;`
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      1. PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
      1. UShp iOS Coder
    2. COyes i have set delegate, Delegate methods are called if when change of a attributes of catalog entity problem with changing relationship's attribute.
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      1. PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
      1. USChathuranga Jayawardhana
    3. COThat is a known restriction of NSFetchedResultsController, compare http://stackoverflow.com/questions/7533849/nsfetchedresultscontroller-with-relationship-not-updating.
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      1. PONSFetchedResultsController controllerWillChangeContent not called for relationship changes
      1. USMartin R
 

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