How do I save a CKRecord as Core Data?

Question

ianhan3 · Accepted Answer

It depends on how complicated your CKRecord is. For something simple (no relationships in CD), I'd pull from CK, convert from CKRecord to whatever the values are natively (String, Int, Bool, etc.), create a NSManagedObject class to store the converted values, then save to CoreData. CoreData can get quite confusing pretty quickly so I would recommend looking at a tutorial on RayWenderlich, for example (provided you've not used it before), but in the simplest form (assuming you've set up the AppDelegate with CoreData when you created the project. If not - this is a great resource (http://craig24.com/2014/12/how-to-add-core-data-to-an-existing-swift-project-in-xcode/):
```swift
//assume an instance of this has been set above somewhere. Something like: ClassYouvePreviouslyDefined.stringVariable = "This is the string you previously converted from the CKRecord and set to the stringVariable in the ClassYouvePreviouslyDefined Class"
//retrieve the app delegate to access CD
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
//Grab the entity that you have defined in your xcDataModel.
let entity = NSEntityDescription.entityForName("EntityNameYouCreatedInYourXCDataModel", inManagedObjectContext:managedContext)
let variableName = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: managedContext)
//set value of data to the key you created in the XCDataModel
variableName.setValue(ClassYouvePreviouslyDefined.stringVariable, forKey: "yourKeyNameYouCreatedInTheXCDataModel")
//
do {
try managedContext.save()
} catch let error as NSError {
print("Could not save (error), (error.userInfo)") 
}
```

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Simen Anthonsen

Simen Anthonsen

How do I save a CKRecord as Core Data?

1 Answer

ianhan3

ianhan3