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Data Grid - Tree data

Use Tree data to handle rows with parent / child relationship.

To enable the Tree data, you simply have to use the treeData prop as well as provide a getTreeDataPath prop. The getTreeDataPath function returns an array of strings which represents the path to a given row.

// The following examples will both render the same tree
// - Sarah
//     - Thomas
//         - Robert
//         - Karen

const columns: GridColDef[] = [{ field: 'jobTitle', width: 250 }];

// Without transformation
const rows: GridRowsProp = [
  { path: ['Sarah'], jobTitle: 'CEO', id: 0 },
  { path: ['Sarah', 'Thomas'], jobTitle: 'Head of Sales', id: 1 },
  { path: ['Sarah', 'Thomas', 'Robert'], jobTitle: 'Sales Person', id: 2 },
  { path: ['Sarah', 'Thomas', 'Karen'], jobTitle: 'Sales Person', id: 3 },
];

const getTreeDataPath: DataGridProProps['getTreeDataPath'] = (row) => row.path;

<DataGridPro
  treeData
  getTreeDataPath={getTreeDataPath}
  rows={rows}
  columns={columns}
/>;

// With transformation
const rows: GridRowsProp = [
  { path: 'Sarah', jobTitle: 'CEO', id: 0 },
  { path: 'Sarah/Thomas', jobTitle: 'Head of Sales', id: 1 },
  { path: 'Sarah/Thomas/Robert', jobTitle: 'Sales Person', id: 2 },
  { path: 'Sarah/Thomas/Karen', jobTitle: 'Sales Person', id: 3 },
];

const getTreeDataPath: DataGridProProps['getTreeDataPath'] = (row) =>
  row.path.split('/');

<DataGridPro
  treeData
  getTreeDataPath={getTreeDataPath}
  rows={rows}
  columns={columns}
/>;

Custom grouping column

Same behavior as for the Row grouping except for the leafField and mainGroupingCriteria which are not applicable for the Tree data.

Accessing the grouping column field

If you want to access the grouping column field, for instance, to use it with column pinning, the GRID_TREE_DATA_GROUPING_FIELD constant is available.

<DataGridPro
  treeData
  initialState={{
    pinnedColumns: {
      left: [GRID_TREE_DATA_GROUPING_FIELD],
    },
  }}
  {...otherProps}
/>

Group expansion

Same behavior as for the Row grouping.

Automatic parents and children selection

Same behavior as for the Row grouping.

Gaps in the tree

If some entries are missing to build the full tree, the Data Grid Pro will automatically create rows to fill those gaps.

Filtering

A node is included if one of the following criteria is met:

  • at least one of its descendants is passing the filters
  • it is passing the filters

By default, the filtering is applied to every depth of the tree. You can limit the filtering to the top-level rows with the disableChildrenFiltering prop.

Sorting

By default, the sorting is applied to every depth of the tree. You can limit the sorting to the top-level rows with the disableChildrenSorting prop.

Children lazy-loading

Check the Server-side tree data section for more information about lazy-loading tree data children.

Full example

API