---
title: "Row Grouping - Hierarchy Selection"
enterprise: true
framework: angular
version: "36.1.0"
---

# Row Grouping - Hierarchy Selection

Row Selection can be configured with groups to select all of a rows descendants.

## Selecting Descendants

When using [Multiple Row Selection](https://www.ag-grid.com/angular-data-grid/row-selection-multi-row/) with row grouping, the grid can be configured to impact descendant and ancestor rows when a row is selected.

To enable hierarchical selection, set the `selection.groupSelects` option to one of the following values:

- `'self'`: Selecting a group row has no additional side effects.
- `'descendants'`: Selecting a group row will select all of its descendants.
- `'filteredDescendants'`: Selecting a group row will select all of its descendants that pass the filter.

#### Group Selection

```ts
import { Component } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { AgGridAngular } from "ag-grid-angular";
import "./styles.css";
import {
  AutoGroupColumnDef,
  ClientSideRowModelModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  GroupSelectionMode,
  ModuleRegistry,
  QuickFilterModule,
  RowSelectionModule,
  RowSelectionOptions,
  enableDevValidations,
} from "ag-grid-community";
import {
  ColumnMenuModule,
  ColumnsToolPanelModule,
  ContextMenuModule,
  RowGroupingModule,
} from "ag-grid-enterprise";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([
  QuickFilterModule,
  ClientSideRowModelModule,
  ColumnsToolPanelModule,
  ColumnMenuModule,
  ContextMenuModule,
  RowGroupingModule,
  RowSelectionModule,
]);
import { IOlympicData } from "./interfaces";

@Component({
  selector: "my-app",
  standalone: true,
  imports: [AgGridAngular],
  template: `<div class="example-wrapper">
    <div class="example-header">
      <label>
        <span>Group selects:</span>
        <select
          id="input-group-selection-mode"
          (change)="onSelectionModeChange()"
        >
          <option value="self">self</option>
          <option value="descendants">descendants</option>
          <option value="filteredDescendants">filteredDescendants</option>
        </select>
      </label>

      <label>
        <span>Quick Filter:</span>
        <input
          type="text"
          id="input-quick-filter"
          (input)="onQuickFilterChanged()"
        />
      </label>
    </div>
    <ag-grid-angular
      style="width: 100%; height: 100%;"
      [columnDefs]="columnDefs"
      [defaultColDef]="defaultColDef"
      [autoGroupColumnDef]="autoGroupColumnDef"
      [rowSelection]="rowSelection"
      [suppressAggFuncInHeader]="true"
      [rowData]="rowData"
      (gridReady)="onGridReady($event)"
    />
  </div> `,
})
export class AppComponent {
  private gridApi!: GridApi<IOlympicData>;

  columnDefs: ColDef[] = [
    { field: "country", rowGroup: true, hide: true },
    { field: "sport", rowGroup: true, hide: true },
    { field: "gold", aggFunc: "sum" },
    { field: "silver", aggFunc: "sum" },
    { field: "bronze", aggFunc: "sum" },
  ];
  defaultColDef: ColDef = {
    flex: 1,
    minWidth: 100,
  };
  autoGroupColumnDef: AutoGroupColumnDef = {
    headerName: "Athlete",
    field: "athlete",
    minWidth: 250,
    cellRenderer: "agGroupCellRenderer",
  };
  rowSelection: RowSelectionOptions | "single" | "multiple" = {
    mode: "multiRow",
    groupSelects: "self",
  };
  rowData!: IOlympicData[];

  constructor(private http: HttpClient) {}

  onSelectionModeChange() {
    this.gridApi.setGridOption("rowSelection", {
      mode: "multiRow",
      groupSelects: getGroupSelectsValue(),
    });
  }

  onQuickFilterChanged() {
    this.gridApi.setGridOption(
      "quickFilterText",
      document.querySelector<HTMLInputElement>("#input-quick-filter")?.value,
    );
  }

  onGridReady(params: GridReadyEvent<IOlympicData>) {
    this.gridApi = params.api;

    this.http
      .get<
        IOlympicData[]
      >("https://www.ag-grid.com/example-assets/olympic-winners.json")
      .subscribe((data) => (this.rowData = data));
  }
}

function getGroupSelectsValue(): GroupSelectionMode {
  return (
    (document.querySelector<HTMLSelectElement>("#input-group-selection-mode")
      ?.value as any) ?? "self"
  );
}
```

[Live example: Group Selection](https://www.ag-grid.com/examples/grouping-row-selection/group-selection/angular)

The example above demonstrates the following configuration:

```ts
<ag-grid-angular
    [rowSelection]="rowSelection"
    /* other grid options ... */ />

this.rowSelection = {
    mode: 'multiRow',
    groupSelects: 'descendants',
};
```

> **Note**
>
> When using `groupSelects: 'descendants'` or `groupSelects: 'filteredDescendants'`, group nodes will not be returned as part of `api.getSelectedNodes()` or `api.getSelectedRows()`.

## Checkboxes in Group Cells

When using [Row Selection](https://www.ag-grid.com/angular-data-grid/row-selection/) with grouping, the grid can be configured to render checkboxes in the group cell, to the right of the expand/collapse chevron.

This can be configured on by setting the `rowSelection.checkboxLocation` option to `'autoGroupColumn'`.

#### Group Cell Checkboxes

```ts
import { Component } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { AgGridAngular } from "ag-grid-angular";
import {
  AutoGroupColumnDef,
  ClientSideRowModelModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  ModuleRegistry,
  RowSelectionModule,
  RowSelectionOptions,
  enableDevValidations,
} from "ag-grid-community";
import {
  ColumnMenuModule,
  ColumnsToolPanelModule,
  ContextMenuModule,
  RowGroupingModule,
} from "ag-grid-enterprise";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([
  RowSelectionModule,
  ClientSideRowModelModule,
  ColumnsToolPanelModule,
  ColumnMenuModule,
  ContextMenuModule,
  RowGroupingModule,
]);
import { IOlympicData } from "./interfaces";

@Component({
  selector: "my-app",
  standalone: true,
  imports: [AgGridAngular],
  template: `<ag-grid-angular
    style="width: 100%; height: 100%;"
    [columnDefs]="columnDefs"
    [defaultColDef]="defaultColDef"
    [autoGroupColumnDef]="autoGroupColumnDef"
    [rowSelection]="rowSelection"
    [suppressAggFuncInHeader]="true"
    [rowData]="rowData"
    (gridReady)="onGridReady($event)"
  /> `,
})
export class AppComponent {
  columnDefs: ColDef[] = [
    { field: "country", rowGroup: true, hide: true },
    { field: "sport", rowGroup: true, hide: true },
    { field: "gold", aggFunc: "sum" },
    { field: "silver", aggFunc: "sum" },
    { field: "bronze", aggFunc: "sum" },
  ];
  defaultColDef: ColDef = {
    flex: 1,
    minWidth: 100,
  };
  autoGroupColumnDef: AutoGroupColumnDef = {
    headerName: "Athlete",
    field: "athlete",
    minWidth: 250,
    cellRenderer: "agGroupCellRenderer",
  };
  rowSelection: RowSelectionOptions | "single" | "multiple" = {
    mode: "multiRow",
    groupSelects: "self",
    checkboxLocation: "autoGroupColumn",
  };
  rowData!: IOlympicData[];

  constructor(private http: HttpClient) {}

  onGridReady(params: GridReadyEvent<IOlympicData>) {
    this.http
      .get<
        IOlympicData[]
      >("https://www.ag-grid.com/example-assets/olympic-winners.json")
      .subscribe((data) => (this.rowData = data));
  }
}
```

[Live example: Group Cell Checkboxes](https://www.ag-grid.com/examples/grouping-row-selection/group-cell-checkboxes/angular)

The example above demonstrates the following configuration to render checkboxes in the group cell:

```ts
<ag-grid-angular
    [rowSelection]="rowSelection"
    /* other grid options ... */ />

this.rowSelection = {
    mode: 'multiRow',
    checkboxLocation: 'autoGroupColumn',
};
```