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POCore Data Programmatically Adding a to-many Relationship
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copied!<p>I have an entity Item, and an entity Type (that has an attribute "Name") in a to-many relationship with Item. (Ie: Item: Brown Table, related to Type with Name "Coffee Table").</p> <p>I've programmatically added new Items fine, using, for example: </p> <pre><code>[newItem setValue:([nameTextField stringValue]) forKey:@"Name"]; [newItem setValue:(costNumber) forKey:@"Cost"]; [newItem setValue:(priceNumber) forKey:@"Price"]; </code></pre> <p>I've been searching for hours but can't find something that works for me adding a relationship to the new item. I'm using a NSPopUpButton to choose the Type of the item, and have tried methods like selectedItem, selectedTag, and selectedCell. I'm trying to get values from my "typeArray", which is filled as follows:</p> <pre><code>NSFetchRequest *fetchRequest2 = [[NSFetchRequest alloc] init]; NSEntityDescription *entity2 = [NSEntityDescription entityForName:@"Type" inManagedObjectContext:managedObjectContext]; [fetchRequest2 setEntity:entity2]; NSError *error = nil; typeArray = [managedObjectContext executeFetchRequest:fetchRequest2 error:&error]; if (typeArray == nil) { NSLog(@"ERROR"); } [fetchRequest2 release]; </code></pre> <p>I'm not sure if the following is along the right lines:</p> <pre><code>NSManagedObject *selectedType = [typeArray objectAtIndex:[typePopUpButton selectedTag]]; </code></pre> <p>But then I have no option for selectedType to add something like "addObject"..</p> <p>Any help appreciated, thank you.</p>

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