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POrelationship fault (core data)
 

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  1. POrelationship fault (core data)
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    <p>I am new to core data and I need help with the following problem:</p> <p>I have two entities: Talk and Speaker. They have a to many relationship. </p> <p>Talk - destination: Speaker , inverse: talk Speaker - destination: Talk, inverse: speaker</p> <p>The field "To-Many Relationship" is checked on both entities. </p> <p>I have a table view controller to list all talks available. This is how am i doing:</p> <pre><code>- (NSFetchedResultsController *)fetchedResultsController { if (_fetchedResultsController != nil) { return _fetchedResultsController; } NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Talk" inManagedObjectContext:self.managedObjectContext]; [fetchRequest setEntity:entity]; NSSortDescriptor *sort = [[NSSortDescriptor alloc] initWithKey:@"date" ascending:NO]; [fetchRequest setSortDescriptors:[NSArray arrayWithObject:sort]]; [fetchRequest setFetchBatchSize:20]; NSFetchedResultsController *theFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Root"]; self.fetchedResultsController = theFetchedResultsController; _fetchedResultsController.delegate = self; return _fetchedResultsController; } </code></pre> <p>When i click on a cell, i want to load another view controller, showing only the details of the selected talk.</p> <p>This is what i am doing:</p> <pre><code>- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { TalksDetailsViewController *talksDetails = [[TalksDetailsViewController alloc] initWithTalksInfo:[_fetchedResultsController objectAtIndexPath:indexPath]]; [self.navigationController pushViewController:talksDetails animated:YES]; } </code></pre> <p>The problem is: i can't see the speakers on TalksDetailsViewController. This is the info sent to TalksDetailsViewController:</p> <pre><code>Info: &lt;Talk: 0x6e66920&gt; (entity: Talk; id: 0x6e66880 &lt;x-coredata://4063FE84-E6DB-4588-8133-9A55B512D6C8/Talk/p2&gt; ; data: { date = "2012-08-31 03:00:00 +0000"; id = 7; speaker = "&lt;relationship fault: 0x6e994e0 'speaker'&gt;"; "start_time" = "17:14:55"; }) </code></pre> <p>I tried something as the code below, but it did not worked:</p> <pre><code>for (Speaker *speakerInfo in self.talkInfo.speaker) { NSLog(@"speaker info: %@", speakerInfo); } </code></pre> <p>It never gets into the for.</p> <p>If i try to log self.talkInfo.speaker i get something like:</p> <pre><code>Relationship 'speaker' fault on managed object (0x7a76c30) &lt;Talk: 0x7a76c30&gt; (entity: Talk; id: 0x7a76b90 &lt;x-coredata://4063FE84-E6DB-4588-8133-9A55B512D6C8/Talk/p2&gt; ; data: { date = "2012-08-31 03:00:00 +0000"; id = 7; speaker = "&lt;relationship fault: 0x6bc5990 'speaker'&gt;"; "start_time" = "17:14:55"; }) </code></pre> <p>I saw some similar questions, but could not fix my problem.</p> <p>Any tips?</p>
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    1. UShdoria
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    1. CORelationship Fault does not mean an error, have you tried logging an attribute from speaker? See this answer: http://stackoverflow.com/a/8876336/879119
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      1. USmkral
    2. COTried, but did not worked. Could not fix my problem based on the answer you pointed out. But thanks.
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    3. COCan you log the self.talkInfo? So I can see how that's structured
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      1. USmkral
 

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