Questions tagged [swiftdata]
SwiftData is a Swift-based Apple framework for managed persistence. It combines CoreData persistence technology with Swift’s modern concurrency features.
swiftdata
567
questions
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Delete multiple selected items in a list using SwiftData
Update: Filed feedback FB12498822
I'm exploring SwiftData before migrating some existing apps using Core Data. However, I'm not even able to implement this simple action. What I'm trying to ...
- 767
1
vote
2
answers
1k
views
View in SwiftUI does not get updated when model changes
I am inserting a new item into the modelContext (while on the single Deck) and the view is supposed to update automatically, but it does not.
It refreshes only when I navigate back from a single Deck ...
22
votes
1
answer
3k
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SwiftData - How to observe changes to the database outside of SwiftUI?
I have a simple example. I fetch all Trip objects from my database:
import SwiftData
@Model
class Trip {
var name: String
}
func fetch() {
let container = ModelContainer(for: Trip.self)
...
- 4,131
1
vote
0
answers
520
views
Predicate failing with UUID's?
I have a fairly simple Categories class shown at the bottom of the post. keyValue is a UUID value, but this predicate is failing.
let keyPredicate = #Predicate<Categories> { $0.uuidKey == ...
- 2,462
1
vote
2
answers
664
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Preview building failed with test data
I am using the new SwiftData to persist the data into the database. For testing purposes, I have created fake data for UI preview as follows:
@MainActor
let modelTestContainer: ModelContainer = {
...
- 33.5k
1
vote
0
answers
341
views
SwiftData: Missing argument for parameter #1 in call
When using SwiftData and defining a @Model, there may be an error Missing argument for parameter #1 in call that is rather strange.
It is caused by a property initialization that does not mention the ...
- 4,706
6
votes
3
answers
7k
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How to preload data into SwiftData model?
import Foundation
import SwiftData
@Model class Example: {
let name: String
let type: String
init(name: String, type: String) {
self.name = name
self.type = type
}
}
...
- 199
5
votes
1
answer
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SwiftData how to form a search predicate with a one to many model
I am working in Xcode 15 (beta) migrating to SwiftData and am having a hard time figuring out how to form a predicate in my one to many model. The desired result is to return a query that returns ...
- 297
15
votes
4
answers
9k
views
SwiftData query with dynamic properties in a View
I'm trying to figure out how to make a SwiftUI view that displays data from SwiftData using a query that includes variables passed into the view. I'm guessing that I won't be able to use the @Query ...
- 790
0
votes
0
answers
788
views
Child view behavior with SwiftData One-To-Many-Relationship
Problem
XCode 15 Beta
I'm testing the new Beta version of Xcode and had some problems with the @Binding behavior.
I recreated the approximate view structure. I tried accessing the models array of the ...
- 41
3
votes
2
answers
1k
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Access Core Data ModelContainer with SwiftData
I have an app that uses CoreData and I want to migrate to SwiftData. After following the Migrate to SwiftData session, I only need to point to my old Core Data file to read the old data and convert it ...
- 2,616
4
votes
3
answers
5k
views
Can't Get Reference to SwiftData ModelContainer and ModelContext in MVVM Class
I'm trying to understand the new SwiftData framework. It's pretty easy to get it to work as long as
I do everything in a SwiftUI view. I'm trying to be a good coder and separate the data
from the UI ...
- 4,130
7
votes
2
answers
733
views
SwiftData: Use ObjectID URIRepresentation to load CoreData object?
I am replacing some CoreData code within my iOS App to use the new SwiftData framework. In my original code, I was saving a CoreData object URI in UserDefaults for a quick bookmark. This allowed me to ...
- 1,044
0
votes
1
answer
735
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SwiftData crashes when using @Query with major/minor sort descriptors
Using Xcode Version 15.0 beta (15A5160n) steps to reproduce:
Insert the code below into a new project
Build and run
First time, tap the “Setup” button to populate the SwiftData container.
All of the ...
- 8,070
4
votes
2
answers
2k
views
SwiftData how to delete data from an entity
I am working on migrating my code into SwiftData and can't seem to find any good answers on how to delete the data in that entity. In Swift I had this function created:
class func deleteEntity(entity:...
- 297