Adjusting Prices / Manipulating Orderlines

[NicolajDK]

Hi,

I have a use case where I need to add a free product to the cart - a gift. But I am having trouble setting the product prices / the orderlines total to 0.

The price should only be 0, when it is being added from a certain endpoint / context.

I can see there is some way to make price adjustments, but I am unsure how to implement it in this use case, as it seems the price adjustments would be used across the website.

Any suggestions on how to solve this issue ? 🙂

Thanks in advance!

[mattbrailsford]

Please share the code of what you've tried.

Generally speaking, you have a couple of options. A price adjuster is one, and with this you'd probably use the order reference in the args to work out if the adjustment should apply. Another option is an order line calculator which can work out the unit price for an order line. This would probably have to do a similar thing though of using the passed in args to figure out if a discount applies.

Without knowing what you've tried though it's hard to suggest if/where you are going wrong.

[NicolajDK]

Hi @mattbrailsford,

Thanks for getting back!
My initial thought was to create a custom GiftProductSnapshot where there price would be 0 and just map my product properties to this snapshot and use the gift snapshot in the AddProductAsync method on the order, but that was unsuccessful.
`var prod = await this.productService.GetProductAsync(store.Id, request.ProductReference, request.ProductVariantReference);

But seems that it still takes the price from the original product.

I will take a loot at the price adjust args and see if I can use something, but the issue would be that it should on be a gift when added from a certain point in the checkout flow, and that info is not necessarily on the order info.

[mattbrailsford]

Then why not set a property on the orderline "IsGift" which allows you to identify it was added as a gift, then your price adjuster can just look for any orderline that has a "IsGift" property and set it's value to 0

[NicolajDK]

Hi @mattbrailsford ,

Thanks for the help!

I am now setting the property and pricer adjuster is catching it, but considering I would like to always set the price to 0 - should it be the price or amount adjuster i use ?

With the price adjuster i am trying to calculate adjustment, but the line totalprice is 0 (should be 20) - Am I adjusting the price to early or am i missing something?

[mattbrailsford]

When you are within a price adjuster you are part of a calculation flow and so prices are net yet updated on the order. You need to access orderline prices from the order calculation state (which is available in the args) https://docs.umbraco.com/umbraco-commerce/key-concepts/order-calculation-state but yes, it should be a Price adjustment.

[NicolajDK]

Thanks for the help, that was the missing piece!