How to re-calculate group sums in editable treetable?

Webix JS
1

I’ve treetable (editable) with a number column. In Grouping lines I use the map-sum function to get the group sum.

How can I let webix re-calc that group sum if i’ve edited the number in an item line?

thanks for suggestions,
chris

2

The group functionality is applied only during grouping.
You can use

grid.ungroup(); grid.group(...);

but it is rather expensive way

3

Very expensive, and you have to take care to keep opened branches, selection etc.

Would be VERY nice feature for Webix2.0! - or are there other ways to get this problem solved easily?

4

Yep, we plan to extend math functionality. In version 2.0 it will support aggregation operations, so it will be possible to define value of cell as sum ( or some other math operation ) of sub rows values ( and it will be updated automatically when value in some of sub rows was changed )