updateCurrentCartLineItemQuantity( )


Updates the quantity of one or more line items in the current site visitor's cart.

The updateCurrentCartLineItemQuantity() function returns a Promise that resolves when the quantities of the current cart's line items are updated. This endpoint is only for updating the quantity of line items. To entirely remove a line item from the current cart, use removeLineItemsFromCurrentCart(). To add a new line item to the current cart, use addToCurrentCart().

This endpoint checks the amount of stock remaining for this line item. If the specified quantity is greater than the remaining stock, then the quantity returned in the response is the total amount of remaining stock.

Permissions
Manage eCommerce - all permissions
Manage Stores - all permissions
Manage Restaurants - all permissions
Learn more about app permissions.
Method Declaration
Copy
function updateCurrentCartLineItemQuantity(
  lineItems: Array<LineItemQuantityUpdate>,
): Promise<UpdateLineItemsQuantityResponse>;
Method Parameters
lineItemsArray<LineItemQuantityUpdate>Required

Line item IDs and their new quantity.

Returns
Return Type:Promise<UpdateLineItemsQuantityResponse>
Update the quantity of the current cart's line items

The first line item is updated to a quantity of 2, while the second is updated to a quantity of 3

JavaScript
/************************************** * Backend code - my-backend-file.web.js * *************************************/ import { Permissions, webMethod } from "wix-web-module"; import { currentCart } from "wix-ecom-backend"; export const myUpdateCurrentCartLineItemQuantityFunction = webMethod( Permissions.Anyone, async (lineItems) => { try { const updatedCurrentCart = await currentCart.updateCurrentCartLineItemQuantity(lineItems); console.log("Success! Line item quantities updated:", updatedCurrentCart); return updatedCurrentCart; } catch (error) { console.error(error); // Handle the error } }, ); /************* * Page code * ************/ import { myUpdateCurrentCartLineItemQuantityFunction } from "backend/my-backend-file.web"; // Sample lineItems array: const lineItems = [ { _id: "00000000-0000-0000-0000-000000000001", quantity: 2, }, { _id: "00000000-0000-0000-0000-000000000002", quantity: 3, }, ]; myUpdateCurrentCartLineItemQuantityFunction(lineItems) .then((updatedCurrentCart) => { const firstItemQuantity = updatedCurrentCart[0].quantity; const secondItemQuantity = updatedCurrentCart[1].quantity; const numberOfCartItems = updatedCurrentCart.lineItems.length; console.log("Success! Line item quantities updated:", updatedCurrentCart); return updatedCurrentCart; }) .catch((error) => { console.error(error); // Handle the error }); /* Promise resolves to: * * { * "_id": "b79fd177-ec98-4245-b9f6-f09e7afa9d04", * "lineItems": [ * { * "_id": "00000000-0000-0000-0000-000000000001", * "quantity": 2, * "catalogReference": { * "catalogItemId": "df19c1f7-07d8-a265-42f8-e8dfa824cc6e", * "appId": "215238eb-22a5-4c36-9e7b-e7c08025e04e", * "options": { * "variantId": "e62fee23-7878-437a-bf0e-292f17d11cb5" * } * }, * "productName": { * "original": "Shoe", * "translated": "Shoe" * }, * "url": "https://example.wixsite.com", * "price": { * "amount": "85", * "convertedAmount": "85", * "formattedAmount": "€85.00", * "formattedConvertedAmount": "€85.00" * }, * "fullPrice": { * "amount": "85", * "convertedAmount": "85", * "formattedAmount": "€85.00", * "formattedConvertedAmount": "€85.00" * }, * "priceBeforeDiscounts": { * "amount": "85", * "convertedAmount": "85", * "formattedAmount": "€85.00", * "formattedConvertedAmount": "€85.00" * }, * "descriptionLines": [ * { * "name": { * "original": "Color", * "translated": "Color" * }, * "colorInfo": { * "original": "Black", * "translated": "Black", * "code": "#000" * }, * "lineType": "UNRECOGNISED" * } * ], * "image": "wix:image://v1/3c76e2_bf235c38610f4d2a905db71095b351cf~mv2.jpg#originWidth=1000&originHeight=1000", * "availability": { * "status": "AVAILABLE", * "quantityAvailable": 30 * }, * "physicalProperties": { * "sku": "364215376135191", * "shippable": true * }, * "couponScopes": [ * { * "namespace": "stores", * "group": { * "name": "collection", * "entityId": "00000000-000000-000000-000000000001" * } * }, * { * "namespace": "stores", * "group": { * "name": "product", * "entityId": "df19c1f7-07d8-a265-42f8-e8dfa824cc6e" * } * } * ], * "itemType": { * "preset": "PHYSICAL" * }, * "paymentOption": "FULL_PAYMENT_ONLINE" * }, * { * "_id": "00000000-0000-0000-0000-000000000002", * "quantity": 3, * "catalogReference": { * "catalogItemId": "1a2d7e83-4bef-31d5-09e1-3326ee271c09", * "appId": "215238eb-22a5-4c36-9e7b-e7c08025e04e", * "options": { * "variantId": "132b84e8-aab8-47a1-a1f6-2c47557b64a4" * } * }, * "productName": { * "original": "Watch", * "translated": "Watch" * }, * "url": "https://example.wixsite.com", * "price": { * "amount": "30", * "convertedAmount": "30", * "formattedAmount": "€30.00", * "formattedConvertedAmount": "€30.00" * }, * "fullPrice": { * "amount": "30", * "convertedAmount": "30", * "formattedAmount": "€30.00", * "formattedConvertedAmount": "€30.00" * }, * "priceBeforeDiscounts": { * "amount": "30", * "convertedAmount": "30", * "formattedAmount": "€30.00", * "formattedConvertedAmount": "€30.00" * }, * "descriptionLines": [ * { * "name": { * "original": "Size", * "translated": "Size" * }, * "plainText": { * "original": "Medium", * "translated": "Medium" * }, * "lineType": "UNRECOGNISED" * }, * { * "name": { * "original": "Color", * "translated": "Color" * }, * "colorInfo": { * "original": "Grey", * "translated": "Grey", * "code": "rgb(128, 128, 128)" * }, * "lineType": "UNRECOGNISED" * } * ], * "image": "wix:image://v1/3c76e2_8891bbe3372a428aac976ac59aa0ac74~mv2.jpg#originWidth=1000&originHeight=1000", * "availability": { * "status": "AVAILABLE" * }, * "physicalProperties": { * "sku": "217537123517253", * "shippable": true * }, * "couponScopes": [ * { * "namespace": "stores", * "group": { * "name": "collection", * "entityId": "00000000-000000-000000-000000000001" * } * }, * { * "namespace": "stores", * "group": { * "name": "product", * "entityId": "1a2d7e83-4bef-31d5-09e1-3326ee271c09" * } * } * ], * "itemType": { * "preset": "PHYSICAL" * }, * "paymentOption": "FULL_PAYMENT_ONLINE" * } * ], * "buyerInfo": { * "visitorId": "4c7ce95c-9fb3-417d-9f02-b41e82b841f7" * }, * "currency": "EUR", * "conversionCurrency": "EUR", * "buyerLanguage": "en", * "siteLanguage": "en", * "taxIncludedInPrices": false, * "weightUnit": "KG", * "subtotal": { * "amount": "260", * "convertedAmount": "260", * "formattedAmount": "€260.00", * "formattedConvertedAmount": "€260.00" * }, * "appliedDiscounts": [], * "inSync": false, * "_createdDate": "2022-06-22T11:32:29.601Z", * "_updatedDate": "2022-06-22T11:36:48.831Z" * } * */
Errors

This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.

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