SOLVED: CoreDataProject question

@turonueve

Apr '22

Hello,

On CoreDataProject, when I get to the part with code:

import SwiftUI

struct ContentView: View {
    @Environment(\.managedObjectContext) var moc

    @FetchRequest(sortDescriptors: []) var wizards: FetchedResults<Wizard>

    var body: some View {
        VStack {
            List(wizards, id: \.self) { wizard in
                Text(wizard.name ?? "Unknown")
            }

            Button("Add") {
                let wizard = Wizard(context: moc)
                wizard.name = "Harry Potter"
            }
            Button("Save") {
                do {
                    try moc.save()
                } catch {
                    print(error.localizedDescription)
                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

I keep getting the following errors: "Cannot find type "Wizard" in scope" "Unable to infer type of a closure parameter for 'wizard' in the current context"

Because of the errors, I'm not able to run the code.

I've started this project from the beginning 3 times now to try to find errors from my end but I cannot. Will appreciate it if someone will point me in the correct direction so that I can move on with the project.

Thank you

2

@turonueve

Apr '22

I tried using :

@FetchRequest(entity: Wizard.entity(), sortDescriptors: []) var wizards: FetchedResults<Wizard>

but still have the same error. I don't see it in Paul's tutorial anywhere. Any other ideas?

2

@Hatsushira HWS+

Apr '22

In your CoreData Model under the Wizard entity. What did you select for CodeGen? It should be Class Definition for this example.

2

@turonueve

Apr '22

I solved the issue. The problem was that I dragged & dropped the DataController file directly from the Bookworm app into the CoreDataProject app.
Even though I changed the NSPersistentContainer name to "CoreDataProject", for some reason it created a problem.
I finally deleted the DataController and made a brand new one and the problem disappeared.

Thank you all for the ideas.

2

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