Core Data Relationships cause save error after delete

Question

This question is probably a long shot. I can't figure out the errors I'm getting on my core data project when I save after I delete an entity. I have two main entities that I work with, an Outfit, and an Article. I can create them with no problem but when I delete them I get the follow error log: For the Outfit: ``` 2009-09-22 20:17:37.771 itryiton[29027:20b] Operation could not be completed. (Cocoa error 1600.) 2009-09-22 20:17:37.773 itryiton[29027:20b] { NSLocalizedDescription = "Operation could not be completed. (Cocoa error 1600.)"; NSValidationErrorKey = outfitArticleViewProperties; NSValidationErrorObject = (entity: Article; id: 0x12b49a0 ; data: { articleID = 2009-09-22 19:05:19 -0400; articleImage = 0x12b4de0 ; articleType = nil; attributeTitles = "(...not nil..)"; color = nil; comment = nil; dateCreated = 2009-09-22 19:05:19 -…

Accepted Answer

I can't mark this solved, because I didn't really solve it, but I do have a working work-around. In the .m for each of my managedObjects I added a method that looks like:

```
-(void) deleteFromManangedObjectContext{ 
   self.outfit = nil; 
   self.article = nil; 
   [[self managedObjectContext] deleteObject:self]; 
} 
```

So you can see, first I manually nil out the relationships, and then I have the object delete itself. In other objects, instead of nil-ing, my delete method is called on some of the objects relationships, to get a cascade.

I'm still interested in the "right" answer. But this is the best solution I have, and it does allow for some fine-grained control over how my relationships are deleted.

Core Data Relationships cause save error after delete

Solution

Problem