CoreData Add Object

Question

I made an application that uses basic data. I made a function that saves 1 or 2 values ​​/ writes data to the main data. This is the following method:

    func saveName(name: String) {

    let myDate:NSDate = NSDate()
    let context = self.fetchedResultsController.managedObjectContext
    let entity = self.fetchedResultsController.fetchRequest.entity!
    let newManagedObject = NSEntityDescription.insertNewObjectForEntityForName(entity.name!, inManagedObjectContext: context) as NSManagedObject

    if markCell == true {
        newManagedObject.setValue(name, forKey: "markedCell")
        markCell = false
    }

    else {
        newManagedObject.setValue(name, forKey: "name")
        newManagedObject.setValue(myDate, forKey: "datum")
    }

    // Save the context.
    var error: NSError? = nil
    if !context.save(&error) {
        abort()
    }
}

There is a failure in the function cellForRowAtIndexPathif markCell == true. If markCell == false(step in else), everything works fine.

If I run this function:

    func saveName(name: String) {

    let myDate:NSDate = NSDate()
    let context = self.fetchedResultsController.managedObjectContext
    let entity = self.fetchedResultsController.fetchRequest.entity!
    let newManagedObject = NSEntityDescription.insertNewObjectForEntityForName(entity.name!, inManagedObjectContext: context) as NSManagedObject

        newManagedObject.setValue(name, forKey: "markedCell")
        markCell = false
        newManagedObject.setValue(name, forKey: "name")
        newManagedObject.setValue(myDate, forKey: "datum")

    // Save the context.
    var error: NSError? = nil
    if !context.save(&error) {
        abort()
    }
}

not crashing, but I also added value markedCell. I want to add a value to markedCellif bool is set to true (the user clicked the button → bool will be set to trueand func saveNamewill be called).

Load data from master data (create UITableViewCell):

//Get task
    let context = self.fetchedResultsController.managedObjectContext
    let object = self.fetchedResultsController.objectAtIndexPath(indexPath) as  NSManagedObject
    var taskString:NSString
    taskString = object.valueForKey("name") as String
    cell.textLabel!.text = object.valueForKey("name") as? String
    //Set accessory type
    var request:NSFetchRequest = NSFetchRequest(entityName: "Person")
    request.predicate = NSPredicate(format:"markedCell = %@", taskString)
    var results : [NSManagedObject] = context.executeFetchRequest(request, error: nil) as [NSManagedObject]
    if (results.count > 0) {
        //Element exists
        cell.accessoryType = UITableViewCellAccessoryType.DisclosureIndicator
        println("Cell is marked")
    }
    else {
        //Doesn't exist
        cell.accessoryType = UITableViewCellAccessoryType.None
        println("Cell isn't marked")
    }

Answer 1

, , markedCell Core Data, name / datum .

, else, :

markedCell == nil //this is allowed in your Core Data model
name != nil
datum != nil

, else, :

markedCell != nil
name == nil
datum == nil

. , , .