AdaptTable for MUI

Row grouping in MUI

Pass groupBy and rows fold into MUI group headers with counts. Pass a list and each key nests inside the one before it, however deep the nesting goes.

groupAggregates adds per-group subtotals from the same mapper summaryRow uses, so every header totals its whole subtree and groupFooters closes each group with the same numbers.

Collapse state travels in the URL, and export writes the grouped sheet — outline levels and all — rather than the flat rows underneath it.

A group header is a TableRow with a spanning TableCell holding an IconButton chevron, a Checkbox and Typography; the footer is the same component with the controls taken away, and the summary sits in a real TableFooter.

The code

import { DataTable } from "@adapttable/mui";

export function People({ rows, columns }) {
  return (
    <DataTable
      data={rows}
      columns={columns}
      rowKey={(row) => row.id}
      groupBy={["team", "status"]}
      groupFooters
      groupAggregates={(group) => ({
        budget: group.reduce(
          (sum, row) => sum + row.budget,
          0
        ),
      })}
    />
  );
}

Install

pnpm add @adapttable/mui @adapttable/core @mui/material

The same feature in the other kits

• Row grouping in Mantine — Rounded, friendly, filled controls
• Row grouping in Chakra — Soft teal, generous radius
• Row grouping in Ant Design — Compact, tinted header, crisp
• Row grouping in Radix — Radix Themes, iris accent
• Row grouping in Base UI — Unstyled primitives, blue accent
• Row grouping in shadcn — Monochrome, ring focus
• Row grouping in Tailwind — Unstyled — your own classes

More MUI features

• Filtering in MUI — Kit-native operators, date ranges, checklists, an AND/OR tree, chips.
• Column management in MUI — Show, hide, reorder, pin and resize — from a menu you did not write.
• Column groups in MUI — Spanning headers that collapse to a stub, a kept child, or a custom cell.
• Row selection in MUI — A set of ids that survives paging, with bulk actions over it.
• Rows in MUI — Pin, drag-reorder, merge cells, and a 3-dot menu per row.
• Inline cell editing in MUI — Kit-native editors in the cell; every write goes through your handler.
• Nested tables in MUI — A real table under a row — same engine, own columns, own keys.
• Export and print in MUI — CSV, XLSX and PDF from one seam — plus a real print layout.
• Large datasets in MUI — 100k rows, 40 columns, virtualized rows and columns, sticky chrome.
• Tree data in MUI — Rows that contain rows — nesting, chevrons, keyboard traversal.
• Mobile cards in MUI — Every row becomes a card on phones. Automatically, with the same state.
• Pivot tables in MUI — Rows down the side, dimensions across the top, subtotals at every level.
• Saved views in MUI — Name an arrangement, share it as a link, manage the list in place.
• Spreadsheet formulas in MUI — Computed columns typed as formulas, errors reported in the cell.
• Right-to-left MUI data table — Arabic strings, a flipped axis, and a popover that opens from the right edge.
• Live updates in MUI — Rows change while you read them. Sort and selection hold.
• Accessible MUI data table — Arrow-key focus, a visible ring, and every announcement shown as text.

Reference: row-grouping. More of this kit: AdaptTable for MUI, or the live demo.