Hi Matt,

I now have created a

MyProductCalculator 

and have overridden the method

CalculateProductPrice

After I have registred the calculator using:

composition.RegisterUnique<IProductCalculator, MyProductCalculator>();

Now I'd like to know how to use the new calculator in one specific step. Like so

 @foreach (var orderLine in currentOrder.OrderLines)
 (...)
  //How to replace this default calculation with my Calculator?
  // or how to use myCalculator to recalculate the line before?
 <div class="pl-4 font-medium">@(orderLine.TotalPrice.Value.Formatted().WithoutTax)</div>
 (...)

Thanks

Hi Edgar,

The calculator is executed every time the order is re-calculated so it's within that context that you'll be providing the price. The calculator is responsible for returning the individual unit price of the given order line item so that's what you should be doing.

You can use whatever dependencies you need to determine what that price should be.

Hi Matt,

I can now calculate the price in all views but whenever a product is added to an order it fetches the original price from the product, because I pass in the ProductReference.

var order = _sessionManager.GetOrCreateCurrentOrder(store.Id)
                            .AsWritable(uow)
                            .AddProduct(postModel.ProductReference, postModel.ProductVariantReference,
                             postModel.Quantity);                          

                        _orderService.SaveOrder(order);

                        uow.Complete();
                    }

Or do I have to add it to the order and than change the price afterwards?

It's hard to say without seeing the code of your calculator

public class MyProductCalculator : ProductCalculator
{
    public MyProductCalculator(ITaxService taxService, IStoreService storeService)
        : base(taxService, storeService)
    { }

    public override Price CalculateProductPrice(IProductSnapshot productSnapshot, Guid currencyId, TaxRate taxRate)
    {
        var product = Current.UmbracoContext.Content.GetById(productSnapshot.ProductReference.As<Guid>());

        if (product.Value<int>("stock") == 0)
        {
            return new Price(0, 0, currencyId);
        }

        return base.CalculateProductPrice(productSnapshot, currencyId, taxRate);

    }
}

Hmm, I guess it depends if the Value<int>("stock") triggers a value converter? There is a stock value converter that reads the stock level from a custom DB table as the value on the node gets reset to -1.