CODEWITHSUNDEEP
iosswiftswiftui
Dale Humphries
Dale Humphries

Reputation: 91

Fetch Request "unrecognized selector" error

I have two entities, one called projects and one called tasks, and projects can have many tasks to them. I have a fetch request that should fetch all the tasks associated with a project, but I am getting this error when tapping on a project to move to the view with the project's tasks on it:

Thread 1: Exception: "-[__NSConcreteUUID longLongValue]: unrecognized selector sent to instance 0x600002969b20"

Here are my two classes:

extension ProjectItem {
    @NSManaged public var projectId: UUID
    @NSManaged public var projectTitle: String
    @NSManaged public var task: NSSet
}

extension TaskItem {
    @NSManaged public var id: UUID
    @NSManaged public var isComplete: Bool
    @NSManaged public var title: String
    @NSManaged public var project: ProjectItem?
}

And here is my view and fetch request:

struct ProjectDetail: View {
    @Environment(\.managedObjectContext) var managedObjectContext
    @ObservedObject var projectItem: ProjectItem
    
    private var tasksInProject: FetchRequest<TaskItem>
    private var taskItems: FetchedResults<TaskItem> { tasksInProject.wrappedValue }
    
    init(_ project:ProjectItem) {
        self.projectItem = project


        self.tasksInProject = FetchRequest(
            entity: TaskItem.entity(),
            sortDescriptors: [NSSortDescriptor(keyPath: \TaskItem.createdDate, ascending: false)],
            predicate: NSPredicate(format: "project == %@", project.projectId as CVarArg))
    }

...

var body: some View {
    ForEach(taskItems, id:\.id) { taskItem in
        Text("\(taskItem.title)")
    }
}

Please help! I have been pulling my hair out over this for over a week now.

Upvotes: 1

Views: 79

Answers (1)

Asperi
Asperi

Reputation: 258443

The TaskItem.project is type of ProjectItem? not UUID, so try

self.tasksInProject = FetchRequest(
    entity: TaskItem.entity(),
    sortDescriptors: [NSSortDescriptor(keyPath: \TaskItem.createdDate, ascending: false)],
    predicate: NSPredicate(format: "project.projectId == %@", project.projectId as CVarArg))

Upvotes: 1

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