In the custom render method you can use Magritte to generate a
read-only view of the fields, try something along:

html table: [
       aStructure description do: [ :each |
               (each isEditable and: [ each componentClass notNil ]) ifTrue: [
                       html tableRow: [
                               html tableHeading: each label.
                               html tableData: [
                                       (each componentClass memento: aStructure description: each)
                                               renderViewerOn: html ] ] ] ] ]