Noooooooooo, please don’t answer that!
OK… is there any other widget I could use that would allow me to build such view, even if it does not have the aspect of a grid?
And/or a workaround by re-arranging data before rendering them (of course I would like to avoid making duplicate rows for a given book title, like SQL does when merging information from 2 tables linked by a “1 to N” relashionship).
Whatever the final rendering, I need to have this grouping logic.
Feels like I will have to build my own widget to achieve this…!