I tried to do something lke this:
but i had some performance troubles:
-> How link two rows ? ( on filter i loose one)
-> How template span config for EACH product (I can do this by sending by server_side spans arrays but app get too slowly)
-> is it possible to make a "sub datatable" in a cell that will be easier than spans...
As you can see i have two solutions, make "sub datatable" for packages or using spans.
What is better and how do it well?