SolidJS•2mo ago

disable untrack when param changes

is it possible to, again, track an untracked signal when useParams parameters changes. I have a component that retrieves some data from the store based on a URL parameter.

const params = useParams()
const [currentNote, setCurrentNote] = createSignal<Note>()

createEffect(async () => {
    // <data from store depending on params.note_id>
    setCurrentNote(...)
})

<Editor
    // untracking to avoid bug in editor whenever data is autosaved
    // however, this needs to be updated when URL param changes
    data={untrack(() => currentNote()?.data) || undefined}
/>

const params = useParams()
const [currentNote, setCurrentNote] = createSignal<Note>()

createEffect(async () => {
    // <data from store depending on params.note_id>
    setCurrentNote(...)
})

<Editor
    // untracking to avoid bug in editor whenever data is autosaved
    // however, this needs to be updated when URL param changes
    data={untrack(() => currentNote()?.data) || undefined}
/>

2 Replies

Raqueebuddin Aziz•2mo ago

I think what you need is ephemeral state, check this out: https://primitives.solidjs.community/package/memo/#createwritablememo Basically in your editor create a writabl memo like createWritableMemo(() => props.data) and remove the untrack from

<Editor
    // untracking to avoid bug in editor whenever data is autosaved
    // however, this needs to be updated when URL param changes
    data={currentNote()?.data}
/>

<Editor
    // untracking to avoid bug in editor whenever data is autosaved
    // however, this needs to be updated when URL param changes
    data={currentNote()?.data}
/>

then update the writable memo in your editor untill the thing is saved, once the thing is saved update your params secondly, using createEffect to set a signal is not best practice, you should create a derived signal if possible

Alex Lohr•2mo ago

You are manually rebuilding a reduced version of createResource to handle your async state.

Gaming

Programming

disable untrack when param changes