1.3 KiB
1.3 KiB
The useCartLinesUpdateCallback hook returns a callback that can be used to update lines in a cart. It must be a descendent of a CartProvider component.
Example code
import {useCartLinesUpdateCallback} from '@shopify/hydrogen';
export function CustomAdjustQuantityButton({lineId, newQuantity}) {
const updateLines = useCartLinesUpdateCallback();
return (
<button
onClick={() => {
updateLines([
{
id: lineId,
quantity: newQuantity,
},
]);
}}
>
+
</button>
);
}
Return value
A callback to update lines in a cart. The callback expects one argument that corresponds to the input you would provide to the Storefront API's cartLinesUpdate mutation.