Using one Magritte form for two model objects

Hi,

I have a big data model that I have split into around 10 model
classes, each with its own set of Magritte descriptions. Now I'd like
to put several of them into a single Magritte form. In other words, I
want to have the form fields of model 1 and model 2 on the same page,
but only one OK and one Cancel button. What would be the simplest way
to do that?

I found this snippet for re-arranging fields / descriptions [1]:

buildComponentFor: aModel
    ^((ModelClass descriptionFieldOne, ModelClass descriptionFieldTwo,
ModelClass descriptionFieldThree)
            componentRenderer: MACssRenderer;
            asComponentOn: aModel)
        addValidatedForm;
        yourself

but it is using a single model object.

Thanks in advance

Matthias

[1] http://onsmalltalk.com/programming/smalltalk/using-magritte-with-seaside/

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