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PONSJSONSerialization - Core Data relationships to JSON
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  1. PONSJSONSerialization - Core Data relationships to JSON
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    copied!<p>I've been trying to create a class to allow me to output core data out to JSON.</p> <p>I have managed to get it working to a point, however I seem to have hit a brick wall on a outputting relationships</p> <pre><code>NSMutableArray * objectsArray = [[NSMutableArray alloc] init]; for (NSManagedObject * object in array) { if([NSJSONSerialization isValidJSONObject:object]) { [objectsArray addObject:object]; } else { NSMutableDictionary *fields = [NSMutableDictionary dictionary]; for (NSAttributeDescription *attribute in [[object entity] properties]) { NSString *attributeName = attribute.name; id attributeValue = [object valueForKey:attributeName]; if([results length] &gt; 0) { NSArray *chunks2 = [results componentsSeparatedByString: @","]; for (NSString * string in chunks2) { if([string.lowercaseString isEqualToString:attributeName.lowercaseString]) { [fields setObject:[NSString stringWithFormat:@"%@",attributeValue] forKey:attributeName]; break; } } } else { if (attributeValue) { [fields setObject:[NSString stringWithFormat:@"%@",attributeValue] forKey:attributeName]; } } } [objectsArray addObject:fields]; } } NSError *error; NSData * JSONData = [NSJSONSerialization dataWithJSONObject:objectsArray options:kNilOptions error:&amp;error]; </code></pre> <p>And this outputs data fine aslong as I do not have a relationship for example a one -> many or many -> one</p> <p>It outputs the following</p> <pre><code>{ "mySegmentation": "(null)", "number": "9452062" }, { "mySegmentation": "&lt;NSManagedObject: 0x212050b0&gt; (entity: SegmentationCodes; id: 0x212090b0 &lt;x-coredata://BEC52F5F-EA26-4CFF-BCCB-09DA163F465D/SegmentationCodes/p13&gt; ; data: &lt;fault&gt;)", "number": "9448502" }, </code></pre> <p>How can I get it to also indent in and output the information from the relationship?</p> <p>I have been scratching my head for a while on this and would appreciate the help</p> <p>Thanks Matt</p>
 

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