Hi Matt

Thank you for the documents you've shared. Appreciate it.

Another question, I already created the custom amount adjuster. My question is how can I apply the custom amount adjuster?

In the documentation, it is written "Adjustments are applied using a IPriceAdjuster or IAmountAdjuster ...". I accessed the ApplyAmountAdjustments method from IAmountAdjuster but the method requires the AmountAdjusterArgs param. How can I get the AmountAdjusterArgs?

Thanks

Hi Nalysa,

You don't create the AdjusterArgs yourself, rather this is passed into you custom adjuster by Vendr.

There is an example adjuster in the docs

public class MyPriceAdjuster : PriceAdjusterBase
{
    public override void ApplyPriceAdjustments(PriceAdjusterArgs args)
    {
        // Calculate Adjustment
        // Discount adjustments should be negative in 
        // where as Fee adjustments should be positive

        // Create a £10 discount
        var price = new Price(-8.33, -1.67, args.Order.CurrencyId);
        var adjustment = new MyAdjustment("My Discount", "MD-001", price);

        // Add the adjustment to the sub total price
        args.SubtotalPriceAdjustments.Add(adjustment);
    }
}

So you create your own Adjuster, which is passed the AdjusterArgs by Vendr and then you modify the args, adding your custom adjustment (that you instantiate in your adjuster) to the list of adjusters for the price you wish to modify.

Once you have your adjuster + adjustment defined, you then register the adjuster so that it is known to Vendr

[ComposeAfter(typeof(VendrWebComposer))]
public class MyComposer : IUserComposer
{
    public void Compose(Composition composition)
    {
        composition.WithPriceAdjusters()
            .Append<MyPriceAdjuster>();
    }
}

Each of these steps is detailed on the docs page here https://vendr.net/docs/core/1.7.0/key-concepts/price-amount-adjustments/

Matt

Hi Matt,

I've followed the documentation you gave. I already created the adjuster and adjustment.

I still don't really understand how this adjuster works. I will explain my question with some example, maybe it helps to make my question clear.

For example, I created Adjuster A + Adjustment A and I create another one, Adjuster B + Adjustment B.

When the user clicks button 1, it triggers the Adjuster A.

When the user clicks button 2, it triggers the Adjuster B.

How can I achieve those behavior?

Thank you.

Hi Matt,

Thank you for your clarification and explanation, appreciate it.

Hi Matt,

I've upgraded my Vendr.Chcekout to v1.2.0 (*note: Vendr v1.4.2). I adjusted the transaction amount to 0. Then I got this error when I want to continue the checkout process. Do you know how to fix this? Thanks

Hi Nalya,

Looking back at the changelog, it looks like there was a bug where the Zero Value Payment Provider wasn't updated in the 1.4.x release to use the new TransactionAmount property so it's erroring because it's using the Order.TotalPrice property still which won't be zero.

This was fixed though in 1.5.2 https://vendr.net/docs/core/changelog/#v152 so I'd recommend upgrading to that version. Unfortunately 1.5.x requires an Umbraco version bump to 8.10.x due to it containing the new Variants Property Editor which is based on the block list editor that was introduced in 8.10.

If you are going to upgrade, I would probably suggest the best thing to do would just be to upgrade to the latest of Vendr and Umbraco.

Matt

PS Can you try and keep forum posts to one topic at a time please. This really should have been raised as a separate topic.

Hi Matt,

Thank you for you explanation.