Saving into multiple entities - Core Data - Swift - ios

Question

Hopefully this will make sense.
I am trying to store data into 2 different entities from one function but not having much luck with storing data into the second entity.
My 2 entities are called - Job & ShootKitChecklist.
I have created a core data manager, I have stripped this back to just show you the section I am using:
struct CoreDataManager {
static let shared = CoreDataManager()
let persistentContainer: NSPersistentContainer = {
// initialization of core data stack
let container = NSPersistentContainer(name: "TBAShootCoreData")
container.loadPersistentStores { (storeDescription, error) in
if let error = error {
fatalError("loading of store failed: \(error)")
}
}
return container
}()
func createSKCItem(item: String, used: Bool, visible: Bool, job: Job) -> (ShootKitChecklist?, Error?) {
let context = persistentContainer.viewContext
// create Shoot kit item
let SKC = NSEntityDescription.insertNewObject(forEntityName: "ShootKitChecklist", into: context) as! ShootKitChecklist
SKC.job = job
SKC.setValue(item, forKey: "item")
SKC.setValue(used, forKey: "used")
SKC.setValue(visible, forKey: "visible")
do {
try context.save()
return (SKC, nil)
} catch let error {
print ("Failed to add Shoot Kit Item:", error)
return (nil, error)
}
}
}
When I try to save the data, the Job entity (First Entity)writes to the context and I can fetch it in another class.
The data I am trying to save to the ShootKitChecklist is from an array so I put my setValues into a for look. However, it seems to ignore saving any data to the entity.
var SKCequipment = ["A","B","C","D","E"]
#IBAction private func HandleSave(sender : UIButton) {
let context = CoreDataManager.shared.persistentContainer.viewContext
let job = NSEntityDescription.insertNewObject(forEntityName: "Job", into: context)
let SKC = NSEntityDescription.insertNewObject(forEntityName: "ShootKitChecklist", into: context)
job.setValue(jobBrandTextField.text, forKey: "jobBrand")
job.setValue(jobNameTextField.text, forKey: "jobName")
job.setValue(directorTextField.text, forKey: "directorName")
job.setValue(agencyTextField.text, forKey: "agencyName")
job.setValue(prodCoTextField.text, forKey: "prodCoName")
for item in SKCequipment {
print(item)
SKC.setValue(item, forKey: "item")
SKC.setValue(true, forKey: "used")
SKC.setValue(true, forKey: "visible")
}
do {
try context.save()
dismiss(animated: true) {
self.delegate?.didAddJob(job: job as! Job)
}
} catch let saveError {
print("Failed to save company:", saveError)
}
}
To test to see if the items have been added to the core data I am fetching the items like this:
guard let SKCitem = job?.skc?.allObjects as? [ShootKitChecklist] else { return}
self.skcitems = SKCitem
print(skcitems)
Thank you in advance, huge help!

Answer 1

Okay I have fixed it by adding another function to my protocol and appending the Entity in the delegate(I realise that I didn't share this before (apologies). Here is my new protocol:
protocol NewJobControllerDelegate {
func didAddJob(job : Job)
func didAddSKC(SKC : ShootKitChecklist)
}
And then in my HandleSave action I changed my for loop to this:
for item in SKCequipment {
let tuple = CoreDataManager.shared.createSKCItem(item: item, used: true, visible: true, job: job as! Job)
if let error = tuple.1 {
print("Cannot save items", error)
} else {
self.delegate?.didAddSKC(SKC: tuple.0!)
}
And finally my new function from my delegate:
func didAddSKC(SKC: ShootKitChecklist) {
ShootKit.append(SKC)
}
Thank you for your help!