Update Component after post new item to the Database - fetch

Question

I am playing around with Sveltekit and I am struggling a bit..
So my problem is, when I add something to the DB it works, but the new Item does not show in the list until i Refresh the page. My Code looks like:
index.js
import { connectToDatabase } from '$lib/db';
export const post = async ({ request}) => {
const body = await request.json()
console.log(body)
const dbConnection = await connectToDatabase();
const db = dbConnection.db;
const einkaufszettel = db.collection('Einkaufszettel')
await einkaufszettel.insertOne({
name: body.newArticle
});
const einkaufsliste = await einkaufszettel.find().toArray();
return {
status: 200,
body: {
einkaufsliste
}
};
}
export const get = async () => {
const dbConnection = await connectToDatabase();
const db = dbConnection.db;
const einkaufszettel = db.collection('Einkaufszettel')
const einkaufsliste = await einkaufszettel.find().toArray();
console.log(einkaufsliste)
return {
status: 200,
body: {
einkaufsliste,
}
};
}
and the Script of index.svelte
<script>
import Title from '$lib/title.svelte'
export let einkaufsliste = []
let newArticle = ''
const addArticle = async () => {
const res = await fetch('/', {
method: 'POST',
body: JSON.stringify({
newArticle
}),
headers: {
'Content-Type': 'application/json'
}
})
fetchArticles()
}
async function fetchArticles() {
const res = await fetch('/')
console.log(res.body)
}
</script>
In the Network Preview Tab the new Item is already added to the List.

Answer 1

As you can read here, you need to reassign the einkaufsliste after fetching the list of elements from the API.
You can do this in your fetchArticles method, like this:
async function fetchArticles() {
einkaufsliste = await fetch('/')
}