Update an Array of NSManagedObjects

Question

I'm using CoreData and swift and trying to update an array of NSManagedObjects. However, I am receiving "Value of type '[NSManagedObject]' has no member 'setValue'" when I attempt to update both keys within the record in context. I'm using the following line of code to perform the update: "erManagedObject.setValue([(true, forKey: "aKey"),(false, forKey: "anotherKey")])"

public func updateRecordsForEntityManagedObject(_ entity: String, erManagedObject: [NSManagedObject]){
// Create the Fetch Request
let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: entity)
let recordCount =  erManagedObject.count
     print(" Total Records: \(recordCount)")
     for i in 1...recordCount {
        // I receive the error here
        erManagedObject.setValue([(true, forKey: "aKey"),(DateUtilities().getTimestamp(), forKey: "timeStampKey")])
     }

Any assistance is greatly appreciated!

Answer 1

Replace

 for i in 1...recordCount {
    // I receive the error here
    erManagedObject.setValue([(true, forKey: "aKey"),(false, forKey: "anotherKey")])
 }

With

erManagedObject.forEach { 
   $0.setValue(true, forKey: "aKey")
   $0.setValue(false, forKey: "anotherKey")
}

As you should use the loop item to setValue not the array itself

---

 let request = NSFetchRequest<NSFetchRequestResult>(entityName:entity)

    do {
         let result = try context.fetch(request) as! [ModelName]
         result.forEach {
           $0.someKey = ""
         }
         // save context here  
     }
     catch {
       print(error)
    }