All Questions
Tagged with swiftdata swift-data-modelcontext
16
questions
0
votes
0
answers
47
views
SwiftData no such table error for one of models
I have 2 models in my app, fist (ModelA) is working fine - data is persistent no matter how many times I restart app on the simulator, but the second (ModelB) sometimes losts it data and I see errors ...
- 20.9k
0
votes
0
answers
34
views
Unable to delete SwiftData object [duplicate]
I am working on migrating my app to SwiftData and testing out some things. I have a custom made toolbar that shows among other things the various objects in a @Model. When I drag one of these to the ...
- 13
0
votes
0
answers
84
views
SwiftData Models loses the relationship after the app closes and relaunches
We have an app that uses two SwiftData models in a one-to-many relationship to Log Data given by the user. In the first model we have a date property and an array. Yhe other model is using the one to ...
- 1
0
votes
1
answer
123
views
How to Initialize SwiftData Instances Only on First App Launch?
I need some help with SwiftData. I want to have a few instances of one of my SwiftData classes created only the first time the app opens. These instances should be created once when the app opens for ...
- 1
1
vote
2
answers
343
views
Changing SwiftData @Model
In my Swift app I had a data model which I needed to remodel.
After that, at the root level of my app, the code crashes when trying to load the ModelContainer, no matter what.
The error is a huge ...
- 53
0
votes
1
answer
95
views
Application crash when trying to save (and fetch) a Model with unique attribute a second time
The context is to create a model instance in SwitfData and return it.
This model as a unique attribute (defined by @Attribute(.unique)). The application runs fine the first time but on the second run, ...
- 3,082
2
votes
0
answers
144
views
SwiftData: Delete rule for many-to-many relationships
I have two SwiftData models, with a many-to-many relationship between them:
@Model
class Movie {
var name: String?
@Relationship(deleteRule: .nullify, inverse: \Actor.movies)
var actors: [...
- 185
0
votes
0
answers
53
views
How to use the .onDelete modifier on a filtered list
I created a small SwiftData project, hosting a list with an .onDelete modifier.
In order to filter the list I extracted the list into a separate ListView and set the filter using the init method.
But ...
0
votes
2
answers
112
views
Testing SwiftData models in test target, "failed to find a currently active container"
I'm building out a SwiftData model in the preliminary stages of app development. I'm using test-driven development (tdd) to iterate on the model and iron out kinks prior to integrating the model into ...
- 34.6k
0
votes
0
answers
55
views
How to keep track of selected child items from an array?
New to SwiftData (and Core Data). In my app, I'd like to keep track of a selected item from a list of items, so it's available when the app is relaunched:
@Model
class Person {
var name: String
...
- 185
0
votes
2
answers
594
views
Fatal error in ModelContainer.swift line 144 - failed to find currently active container for class
This error only appears in Preview - I am able to run my app fine.
I have a modification sheet that I want to build out in SwiftUI but the preview will not work which is putting a damper on my ...
0
votes
0
answers
443
views
Crash accessing SwiftData model context from environment in a child SwiftUI view in NavigationSplitView resulting in ability to @Query successfully
I have a ChildView that you can access via NavigationLink and that will display in a NavigationSplitView’s detail pane.
NavigationSplitView {
ListView()
} detail: {
}
And
.navigationDestination(for:...
- 1,111
0
votes
1
answer
337
views
How to create environment objects in SwiftData
In a UIKit-based app where I'm integrating SwiftUI:
class SwiftDataManager {
static let shared = SwiftDataManager()
private init() {}
var container: ModelContainer?
func ...
- 12.8k
3
votes
1
answer
2k
views
How to make SwiftData @Query updating from changes made on a background context?
I have a SwiftData @Query in a LazyVStack, works nicely, updates on every model change, even if I make changes in relations only.
But I also have a long running task (~3 sec), so I created a @...
- 16.4k
1
vote
1
answer
126
views
How to create "ENDSWITH" predicate for SwiftData @Query?
I can create all kinds of predicates fine, but I'm not sure what can I use for implement "ENDSWITH"?
extension Filter {
var predicate: Predicate<WordModel>? {
switch self {...
- 16.4k