AdaptTable for Mantine

Row grouping in Mantine

Pass groupBy and rows fold into Mantine 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 Mantine table row with the kit's own chevron ActionIcon, and on phones it becomes a Mantine Card header — the same grouping, both layouts.

The code

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

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/mantine @adapttable/core @mantine/core @mantine/hooks

The same feature in the other kits

• Row grouping in MUI — Material elevation, uppercase actions
• 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 Mantine features

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

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