How to merge several bundles from the same cart line?

Functions
1

Our app utilizes the Cart Transform Merge Operation to merge bundles in the cart.

One of our clients sells a product both as single units and in packs (e.g., 2-pack, 4-pack). When a buyer adds a quantity of 2 to the cart, it’s merged into a 2-pack. Similarly, if they add a quantity of 4, it’s merged into a 4-pack.

The client wants to allow customers to purchase 6 of the same product, and in this scenario, the cart should contain a 4-pack and a 2-pack after the merge.

However, we’re unable to achieve this functionality. According to the documentation:

Multiple merge operations targeting the same cart line: The first merge operation in the list is executed, and all other merge operations for the same cart line are discarded.

In this case, the cart has a single line with a quantity of 6. This means we can’t target the same line for two separate bundles (packs), and as a result, only one bundle is being merged.

Is there any solution or workaround for this?

2

Try passing unique line attributes and then aggregating them in the response based on those attributes.

1 Like
3

Use line item properties to distinguish these 2 different packs

4

We don’t have control over the items that are added to the cart, so unfortunately, we can’t use the trick of splitting lines with properties. In this case, there’s a single item line with a quantity of 6 in the cart, which needs to be merged into two different bundles.

5

Similar issue here

For this type of bundle:
“Big Bundle” = (1 Hat + 1 Shirt)

Cart:
2x Cool Hat - Blue
2x Shirt - S

→ Cart transform →

New cart:
2x “Big Bundle”:
(1 Hat + 1 Shirt) + (1 Hat + 1 Shirt)

Q: How my cart transform output object should look like?