nsmanagedobject

Below is my method in which there is fetch I make on a Managed object Class Appointment. I need to use same function for other similar managed object Classes. How do I pass different "Class" as parameter every time as I need. And also use it to fetch as I have currently "Appointment" Class. I might need to use Generics may be. Dont know how though. func getAppointmentArray(aPredicate : String , aModel : Any) -> [Any] { var apptArr = [Any]() let fetchRequest = NSFetchRequest<Appointment>(entityName: "Appointment") fetchRequest.returnsObjectsAsFaults = false fetchRequest.predicate = NSPredicate

I've read Subclassing NSManagedObject with swift 3 and Xcode 8 beta and read this great tutorial. Still have questions on some points. The similarities are: I can customize both classes however I like. I can add new attributes or remove or rename attributes. ie for category/extension it will get updated upon a new build (in the derived data), and in case of manual/none it will leave the class file intact and update the extension in the file navigation ie I won't end up with a duplicate file. This is all handled by Xcode because they are marked with a preprocessor @NSManaged Dumping something

According to the docs: You should not override init. You are discouraged from overriding initWithEntity:insertIntoManagedObjectContext: and you should instead use awakeFromInsert or awakeFromFetch. This is fine if all I want to do is set some attribute to the current date or similar, but what if I want to send in another object and set attributes based on its information? For example, in an NSManagedObject subclass called 'Item', I want an initFromOtherThing:(Thing *)thing, in which the item's name is set to that of the thing. I would like to avoid 'just having to remember' to set the name

There is previous post about difference of @synthesize and @dynamic. I wanna to know more about dynamic from the perspective of how to use @dynamic usually. Usually we use @dynamic together with NSManagedObject // Movie.h @interface Movie : NSManagedObject { } @property (retain) NSString* title; @end // Movie.m @implementation Movie @dynamic title; @end Actually there are no generated getter/setter during compiler time according to understanding of @dynamic, so it is necessary to implement your own getter/setter. My question is that in this NSManagedObject case, what is the rough

I'm using core data to save a category in vc1 and want to add list properties to a list in vc2. My data model is one category to many list properties. I'm adding the category like this in vc1: func createNewCategory() { var category: NSManagedObject! = NSEntityDescription.insertNewObjectForEntityForName("Category", inManagedObjectContext: self.context) as NSManagedObject category.setValue(self.categoryTextField.text, forKey: "name") var error: NSError? = nil self.context.save(&error) } Setting up the data in vc2: func setupCoreData() { var appDelegate: AppDelegate = (UIApplication