Let's get some sales

Now that the customer can browse and view all the products on offer, it's time to get that money rolling in.

First things first. You need to know a little about how Commerce handles carts. Thankfully it's straight forward when using the JS-SDK. You just need a couple of values: productId and quantity.

EPCC.Cart().AddProduct(productId, quantity)

The .Cart() portion of the SDK can take an optional cartId, but thanks to the SDK you don't have to worry about managing them. This can be done for you by passing no value. You can review SDK code here for more details.

Let's build it into your store. The cart-service.ts file has a function the store depends on. It provides the productId and quantity. If you wire in the AddProduct SDK Cart method, products can be added to the cart!

export async function addProductToCart(
  productId: string,
  quantity: number
): Promise<CartItemsResponse> {
  ...
}

Of course customers don't always want to buy everything they've added to their cart. With Commerce it's just as easy to remove cart items as it was to add them.

EPCC.Cart().RemoveItem(itemId)

export async function removeCartItem(
  itemId: string
): Promise<CartItemsResponse> {
  ...
}