Hello,

I am trying to implement my own ConversionStrategy for updating the basket items upon login. I have based my implementation on the documentation which states:

Creating a customized the basket conversion strategy can be accomplished by adding a new class that inherits from BasketConversionBase and implementing the Merge() method and then introducing the type reference in the merchello.config.

My setup is as follows:

<strategies>
    ...
    <!--<strategy alias="DefaultAnonymousBasketConversionStrategy" type="Merchello.Web.Workflow.BasketConversionByDiscardingPreviousCustomerBasket, Merchello.Web" />-->
    <!--<strategy alias="DefaultAnonymousBasketConversionStrategy" type="Merchello.Web.Workflow.BasketConversionByCombiningAnonymousBasket, Merchello.Web" />-->
    <strategy alias="DefaultAnonymousBasketConversionStrategy" type="My.Namespace.MyType, MyLibrary />
</strategies>

My custom class sub-classing BasketConversionBase

public class MyType : BasketConversionBase
{
    public override IBasket Merge()
    {
        // update basket item prices and return basket
    }
}

This will not compile though, as I get the following error message: 'BasketConversionBase' does not contain a constructor that takes 0 arguments. Cannot access internal constructor 'BasketConversionBase' here.

I tried implementing the Merge() method instead of overriding it:

public class MyType : IBasketConversionBase
{
    public IBasket Merge()
    {
        // update basket item prices and return basket
    }
}

This does compile but will not trigger.

I am using Umbraco 7.5.3 with Merchello 2.2.1. I also tested with Merchello 2.3.0 but I am getting the same error.

How can I proceed with this?

Additional question: How would I go about implementing a conversion strategy for the reversed scenario - when a user is logging out?

BR Peter