Why can't I set a variable on my custom class? - ios

Question

I'm creating my first iOS app in Swift, and I'm stuck on a basic thing. I want to create a custom class and set a variable. I keep seeing the error "Value of type [Item] has no member [name].
This is my custom class:
import UIKit
import Foundation
import CoreData
class Item:NSManagedObject {
var name:String?
convenience init(name: String?, insertIntoManagedObjectContext context: NSManagedObjectContext!) {
let entity = NSEntityDescription.entityForName("ItemEntity", inManagedObjectContext: context)!
self.init(entity: entity, insertIntoManagedObjectContext: context)
}
}
And this is my code that tries to use it:
func editItem(id:Int, category:String, brand:String, name:String, colour:String, purchasePrice:String, purchaseDate:String, expiryDate:String) -> Int {
// vars
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let entity = NSEntityDescription.entityForName("ItemEntity", inManagedObjectContext: managedContext)
let item = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: managedContext)
var listItem = [Item]()
let fetchRequest = NSFetchRequest(entityName: "ItemEntity")
// fetch the item from the core data with the same ID
do{
let predicate = NSPredicate(format: "id == %#", String(id))
fetchRequest.predicate = predicate
fetchRequest.fetchLimit = 1
let results = try managedContext.executeFetchRequest(fetchRequest)
listItem = results as! [Item]
}
catch {
let fetchError = error as NSError
print (fetchError)
}
// edit the item
listItem.name = "text" // !! THIS IS THE LINE WHICH DISPLAYS THE ERROR
// save the item
do {
try managedContext.save()
}
catch {
let saveError = error as NSError
print (saveError)
}
}
Really appreciate your help, this one seems so basic but a lot of googling hasn't helped me figure it out.

Answer 1

listItem is an array of Item, so if you want to change the name of one thing in this list you should specify the index you wanna change, like
listItem[0].name = "text"

Answer 2

Put spaces around the colon. Syntax if I'm not mistaken.

Answer 3

I think the problem code is here:
let item = NSManagedObject(entity: entity!, insertIntoManagedObjectContext: managedContext) as! Item
By default, the item type is NSManagedObject, so listItem have no member [name]. You need to cast down it to Item Object.