Hi,
when inserting an entity with a relationship I get the following runtime error:
Illegal attempt to establish a relationship 'group' between objects in different contexts [...].
The model looks like this:
@Model
class Person {
var name: String
@Relationship(.nullify, inverse: \Group.members) var group: Group
init(name: String) {
self.name = name
}
}
@Model
class Group {
var name: String
@Relationship(.cascade) public var members: [Person]
init(name: String) {
self.name = name
}
}
It can be reproduced using this (contrived) bit of code:
let group = Group(name: "Group A")
ctx.insert(group)
try! ctx.save()
let descriptor = FetchDescriptor<Group>()
let groups = try ctx.fetch(descriptor)
XCTAssertFalse(groups.isEmpty)
XCTAssertEqual(groups.count, 1)
XCTAssertTrue(groups.first?.name == "Group A")
let person = Person(name: "Willy")
person.group = group
ctx.insert(person)
try ctx.save()
(See also full test case below).
Anybody experiencing similar issues? Bug or feature?
Cheers, Michael
Full test case:
import SwiftData
import SwiftUI
import XCTest
// MARK: - Person -
@Model
class Person {
var name: String
@Relationship(.nullify, inverse: \Group.members) var group: Group
init(name: String) {
self.name = name
}
}
// MARK: - Group -
@Model
class Group {
var name: String
@Relationship(.cascade) public var members: [Person]
init(name: String) {
self.name = name
}
}
// MARK: - SD_PrototypingTests -
final class SD_PrototypingTests: XCTestCase {
var container: ModelContainer!
var ctx: ModelContext!
override func setUpWithError() throws {
let fullSchema = Schema([Person.self,
Group.self,])
let dbCfg = ModelConfiguration(schema: fullSchema)
container = try ModelContainer(for: fullSchema, dbCfg)
ctx = ModelContext(container)
_ = try ctx.delete(model: Group.self)
_ = try ctx.delete(model: Person.self)
}
override func tearDownWithError() throws {
guard let dbURL = container.configurations.first?.url else {
XCTFail("Could not find db URL")
return
}
do {
try FileManager.default.removeItem(at: dbURL)
} catch {
XCTFail("Could not delete db: \(error)")
}
}
func testRelAssignemnt_FB12363892() throws {
let group = Group(name: "Group A")
ctx.insert(group)
try! ctx.save()
let descriptor = FetchDescriptor<Group>()
let groups = try ctx.fetch(descriptor)
XCTAssertFalse(groups.isEmpty)
XCTAssertEqual(groups.count, 1)
XCTAssertTrue(groups.first?.name == "Group A")
let person = Person(name: "Willy")
person.group = group
ctx.insert(person)
try ctx.save()
}
}
