I've got a Categories list, a Product list with a Category field defined as lookup value.
The Product list is used in an OrderLine List. How can i show the category value from the selected Product in the OrderLine view?
I tried calculcated columns, but they don't work on lookup columns.
Would this be possible by creating a custom FieldType? (without performance problems, i assume there's a reason why calculated values don't work on lookup columns)
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