Accessing current row count on grouped and filterable table

[Mohamed CISSE]

Hi thanks very much for the work. This library is hands down the best table library out there.
My colleagues and I are in awe and grateful for the thoughtfulness.

We have a use case where we have a grouped and filterable (header filter) tables.

Is there is a way to access the updated row count of each group when filtering changes ? We need to display that row count

My apologies if the is not the place to post question. Please, if needed, kindly redirect me to the questions page

[Alexander Komarov]

Hi @ceessay do you need to show that length in grouping summary: https://komarovalexander.github.io/ka-table/#/grouping-summary ?
there is a demo how to do that for filtered values: https://stackblitz.com/edit/table-grouping-summary-ts-khj3mx?file=Demo.tsx

[Mohamed CISSE]

I do need to show the length, but in the grouping header instead of grouping the summary

[Alexander Komarov]

The groupData is not available in the groupCell chidComponent in the current version of the Table.
At this time you can use this workaround:

      childComponents={{
        groupCell: {
          content: (props) => {
            switch (props.column.key) {
              case 'country':
                const visibleData = kaPropsUtils.getData(tableProps);
                const filteredData = visibleData.filter(
                  (x) => x[props.column.key] === props.groupKey[0]
                );
                return `${props.text} - length: ${filteredData.length}`;
            }
          },
        },
      }}

link to example https://stackblitz.com/edit/table-grouping-summary-ts-mzq1zw?file=Demo.tsx

[Mohamed CISSE]

This is exactly what I needed! Thanks for the help

[Alexander Komarov]

Closing for now as there is a workaround. Will wait for further requests to make it out of the box