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Questions - core-data

Combine two publishers in swift to observe NSManagedObjects?

I have the following publisher: func publisher<T: NSManagedObject>(for managedObject: T, in context: NSManagedObjectContext, changeTypes: [ChangeType]) -> AnyPublisher<(object: T, type...
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zumzum

swift

core-data

combine

Votes: 0

Answers: 0

Error - objects in different contexts when setting relationship during a batch insert

I have a function used to create an object graph in my app for testing purposes. The data structure is very simple at present with a one-to-many relationship between Patient and ParameterMeasurement e...
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rustproofFish

swift

core-data

batch-insert

Votes: 0

Answers: 1

Latest Answer

Having done some more digging on this, it appears that batch inserts cannot be used to add relationships to the persistent store as noted here. I'm guessing its because of the difficulties associated ...
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rustproofFish

Core data not triggering immediate refresh with SwiftUI

I'm at a loss with this problem I've been troubleshooting the past few days. I am drawing a custom shape, and the user can move one of the points around via a drag gesture. I want the shape to redraw,...
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Mathieson

core-data

swiftui

Votes: 0

Answers: 1

Latest Answer

I used the approach suggested by jnpdx and it works. import SwiftUI class PointsViewModel: ObservableObject { @Published var points = [Point]() func movePoint(index: Int, x: CGFloat, y: ...
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Mathieson

SwiftUI FetchRequest Order Output in Picker

I have a json I am fetching from a remote server that contains a list of countries (and ID, the country name, and the country abbreviation). I am populating a picker with these values via a ForEach. T...
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kittonian

ios

swift

core-data

swiftui

Votes: 0

Answers: 1

Latest Answer

It was actually a lot simpler than I was making it out to be. When you create a picker without using a ForEach, you do something like: Picker("Fooblah", selection: $fooblah) { Text("...
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kittonian

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