Hey @Aiden19
Thank you for reaching out regarding the issue with cart mutations not immediately reflecting in the queried cart data. This behavior is likely due to a delay in Shopify’s Storefront API updating the cart state or Apollo Client caching outdated data.
To resolve this issue, please consider the following solutions:
- Manually Update Apollo Cache After Mutations
By default, Apollo does not automatically update the cache after a mutation. To ensure immediate synchronization, update the cache manually:
const [addToCart] = useMutation(ADD_TO_CART, {
update(cache, { data }) {
if (data?.cartLinesAdd?.cart) {
cache.writeQuery({
query: GET_CART,
data: { cart: data.cartLinesAdd.cart }
});
}
}
});
- Use refetchQueries to Retrieve Updated Cart Data
If the cache update does not work as expected, force a fresh fetch after a mutation:
const [addToCart] = useMutation(ADD_TO_CART, {
refetchQueries: [{ query: GET_CART }]
});
- Introduce a Short Delay Before Fetching Updated Cart
Shopify’s backend may take a brief moment to update the cart state. Adding a short delay before querying the cart again can improve synchronization:
await addToCart();
setTimeout(() => {
refetchCart(); // Fetch cart data after a slight delay
}, 500);
- Set Apollo Fetch Policy to network-only
To ensure that cart queries always return the latest data from Shopify rather than relying on Apollo’s cache, configure your query as follows:
const { data, refetch } = useQuery(GET_CART, {
fetchPolicy: 'network-only' // Ensures fresh data from Shopify API
});
These steps should help maintain cart data consistency and prevent any asynchrony issues. If the problem persists, please let us know, and we can investigate further.
Best regards,
Rajat