Removing from a Cart

Removing from a cart is available as the checkoutLineDelete mutation that takes the checkout token and the ID of a line in checkout to remove.

checkoutLineDelete(token: $checkoutToken, lineId: $lineId) {
  checkout {
    token
  }
  errors {
    field
    message
  }
}

Let's name this mutation as CheckoutRemoveProduct and put it in graphql/mutations/CheckoutRemoveProduct.graphql. As before, we are using the CheckoutFragment fragment to standardize the shape of a checkout object we are getting in response to this mutation.

# graphql/mutations/CheckoutRemoveProduct.graphql
mutation CheckoutRemoveProduct($checkoutToken: UUID!, $lineId: ID!) {
  checkoutLineDelete(token: $checkoutToken, lineId: $lineId) {
    checkout {
      ...CheckoutFragment
    }
    errors {
      message
    }
  }
}

Now we can incorporate this mutation into our application as a React.js hook. Since we named our mutation CheckoutRemoveProduct, this will automatically generate the useCheckoutRemoveProduct hook.

We will add the possibility to remove a product from the cart to the CartList component located at components/CartList. We will attach the remove link to each line in the cart.

// components/CartList.tsx
import React from 'react';
import Link from 'next/link';

import { useCheckoutRemoveProductMutation, } from "@/saleor/api";
import { useLocalStorage } from 'react-use';
interface Props { products: any[]; } const styles = { product: { image: 'flex-shrink-0 bg-white w-48 h-48 border object-center object-cover', container: 'ml-8 flex-1 flex flex-col justify-center', name: 'text-xl font-bold', } } export const CartList = ({ products }: Props) => {
const [token] = useLocalStorage("token");
const [CheckoutremoveProduct] = useCheckoutRemoveProductMutation();
return ( <ul role="list" className="divide-y divide-gray-200"> {products.map((line) => { const lineID = line?.id || ""; const variant = line?.variant; const product = line?.variant.product; const price = line?.totalPrice?.gross; const productID = product?.id return ( <li key={line?.id} className="py-6 flex"> <div className={styles.product.image}> <img src={product?.thumbnail?.url || ""} alt={product?.thumbnail?.alt || ""} /> </div> <div className={styles.product.container}> <div className="flex justify-between"> <div className="pr-6"> <h3 className={styles.product.name}> <Link href={`/product/${productID}`}> <a> {product?.name} </a> </Link> </h3> <h4> {variant?.name} </h4>
<button type="button" onClick={() => CheckoutremoveProduct({ variables: { checkoutToken: token, lineId: lineID, }, }) } className="ml-4 text-sm font-medium text-indigo-600 hover:text-indigo-500 sm:ml-0 sm:mt-3" >
<span>Remove</span>
</button>
</div> <p className="text-xl text-gray-900 text-right"> {price?.amount} {price?.currency} </p> </div> </div> </li> ); })} </ul> ); }

Help us improve our docs. Edit this page on GitHub