Is @FetchOne supposed to be reactive when used inside a view body?

[SublimeAbode]

It seems that the @FetchOne property wrapper is not reactive when used inside a view body. Is this to be expected?

Consider the following code where the @FetchOne property does not behave reactively:

// Does not work
struct TaskDetailViewWrapper: View {
    let taskID: Task.ID

    var body: some View {
        @FetchOne(Task.find(taskID)) var task
        if let task {
            TaskDetailView(task: task)
            // The Task record is later mutated from the detail view, but TaskDetailView does not re-render with the updated value.
        }
    }
}

And now a modified example where it does:

// Works
struct TaskDetailViewWrapper: View {
    let taskID: Task.ID
    @FetchOne var task: Task? // Move the wrapper up to the view definition
    
    init(taskID: Task.ID) {
        self.taskID = taskID
        self._task = FetchOne(wrappedValue: nil, Task.find(taskID)) // Update the wrapper in the initializer
    }

    var body: some View {
        if let task {
            TaskDetailView(task: task)
            // The Task record is later mutated from the detail view, and TaskDetailView DOES re-render with the updated value.
        }
    }
}

[mbrandonw]

Hi @SublimeAbode, yes this is to be expected. You should not be using the property wrappers directly in the body of a view and it should only be used as an instance property of the view.

Is there a reason you were using it in the body of a view?

[SublimeAbode]

Thanks. I noticed that some property wrappers work reactively in the view body so I assumed this one would too. It was mainly just for convenience.