GetProductGroup() missing from NavigationTreeNodeViewModelExtensions in 10.21.1

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Adrian Ursu

Posted on 04/12/2025 09:53:05

Hi guys,
I have upgraded a local solution from DW 10.17 to DW10.21 and the menu started to display errors.
Specifically, the method GetProductGroup() is missing from NavigationTreeNodeViewModelExtensions.
It is used inside SwiftV2/Paragraph/Swift-v2_MenuRelatedContent/Menu.cshtml at line 23:

string GetGroupFieldValue(string fieldSystemName, NavigationTreeNodeViewModel node)
    {
        var productGroup = node.GetProductGroup();
        string fieldValue = string.Empty;
        if (productGroup.GroupFields is not null)
        {
            foreach (var field in productGroup.GroupFields)
            {
                if (field.SystemName == fieldSystemName)
                {
                    fieldValue = field.Value?.ToString() ?? string.Empty;
                }
            }
        }
        return fieldValue;
    }

Is this intended? Should I find a workaround or wait for a fix in the next version?

Thank you,
Adrian

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Morten Bengtson

Posted on 18/12/2025 12:47:24

The extension methods for NavigationTreeNodeViewModel are placed in multiple namespaces...

- General extension methods are placed in Dynamicweb.Frontend.Navigation.NavigationTreeNodeViewModelExtensions.

- Product related extension methods are placed in Dynamicweb.Ecommerce.ProductCatalog.NavigationTreeViewNodeExtensions - where GetProductGroup is found.

Maybe the template is missing a namespace reference at the top? It's there in the standard Menu.cshtml template in Swift v2, so it should be working.

@using Dynamicweb.Ecommerce.ProductCatalog

If you can't make it work then please provide some more details about the errors that you get.

/Morten

Adrian Ursu

Posted on 18/12/2025 16:50:06

Hi Morten,
In my test, I was using a standard Swift template. Maybe the Swift version was not updated.
When I downgraded the application, it worked without making any changes in the template. Therefore, something was changed in DW10.21.

Adrian

Nicolai Pedersen

Posted on 19/12/2025 11:16:54

Hi Adrian

That extension method has not changed in 2 years - except the documentation that was updated in April of this year.

The NavigationTreeNodeViewModelExtensions was introduced in April 2025 and has never changed

So if downgrading works - that would be really odd...

If you run in a local project it can be implicit usings in your project.

BR Nicolai

Adrian Ursu

Posted on 19/12/2025 12:00:32

Hi Nicolai,
Something was weird indeed. I was using Standard Swift templates, no custom code. Tried a few recycles of the app before opening the thread. As soon as I downgraded, all worked without any template changes.
I have tried it again now, and it does work, with the same application (10.21.1)
It is very weird. I will keep testing, but if this has not changed in a long while, it obviously does not make sense to break.

Thank you for looking into it.

Adrian

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GetProductGroup() missing from NavigationTreeNodeViewModelExtensions in 10.21.1

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