The following below steps need to follow to update product Quantity in Cart by using GraphQL in Magento 2.x / Adobe Commerce 2.x
Use the updateCartItems mutation to update shopping cart items and removeItemFromCart to remove a product from the shopping cart.
Step [1] – Recommendation to use below syntax to update product Quantity in Cart
Here Using Postman
Syntax –
Step [2] – Put below Request
mutation {
updateCartItems(
input: {
cart_id: "s6Wgi4j0H2ULX0YHfD3mhOMHuAL10qLL"
cart_items: [{ cart_item_id: 140, quantity: 21 }]
}
) {
cart {
items {
id
quantity
product {
id
sku
name
}
prices {
row_total {
value
currency
}
}
}
}
}
}
Step [3] – Put below Output Response
{
"data": {
"updateCartItems": {
"cart": {
"items": [
{
"id": "140",
"quantity": 21,
"product": {
"id": 7,
"sku": "24-UB02",
"name": "Impulse Duffle"
},
"prices": {
"row_total": {
"value": 1554,
"currency": "INR"
}
}
}
]
}
}
}
}