Data Grid - State

Initialize and read the state of the Data Grid.

Access the state

The state is exposed on the apiRef object.

Data Grid packages expose a set of state selectors that take the apiRef as an argument and return a value. You can use them to get data from the state without worrying about its internal structure.

Direct selector access

The way to use a selector is to call it as a function with apiRef as its first argument:

const paginationModel = gridPaginationModelSelector(apiRef);

If you only need to access the state value in the render of your components, use the useGridSelector() hook. This hook ensures there is a reactive binding such that when the state changes, the component in which this hook is used is re-rendered.

const paginationModel = useGridSelector(apiRef, gridPaginationModelSelector);

<DataGrid
  {...data}
  loading={loading}
  paginationModel={paginationModel}
  onPaginationModelChange={setPaginationModel}
  hideFooter
  slots={{
    toolbar: Toolbar,
  }}
  showToolbar
/>

<DataGrid
  {...data}
  loading={loading}
  paginationModel={paginationModel}
  onPaginationModelChange={setPaginationModel}
  hideFooter
  slots={{
    toolbar: Toolbar,
  }}
  showToolbar
/>

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Catalog of selectors

Some selectors have not yet been documented.

Aggregation

gridAggregationLookupSelector

Get the aggregation results as a lookup.

Signature:

gridAggregationLookupSelector: (apiRef: GridApiRef) => GridAggregationLookup

Example

const aggregationLookup = gridAggregationLookupSelector(apiRef);

gridAggregationModelSelector

Get the aggregation model, containing the aggregation function of each column. If a column is not in the model, it is not aggregated.

Signature:

gridAggregationModelSelector: (apiRef: GridApiRef) => GridAggregationModel

Example

const aggregationModel = gridAggregationModelSelector(apiRef);

Columns

gridColumnDefinitionsSelector

Get an array of column definitions in the order rendered on screen..

Signature:

gridColumnDefinitionsSelector: (apiRef: GridApiRef) => GridStateColDef[]

Example

const columnDefinitions = gridColumnDefinitionsSelector(apiRef);

gridColumnFieldsSelector

Get an array of column fields in the order rendered on screen.

Signature:

gridColumnFieldsSelector: (apiRef: GridApiRef) => string[]

Example

const columnFields = gridColumnFieldsSelector(apiRef);

gridColumnLookupSelector

Get the columns as a lookup (an object containing the field for keys and the definition for values).

Signature:

gridColumnLookupSelector: (apiRef: GridApiRef) => GridColumnLookup

Example

const columnLookup = gridColumnLookupSelector(apiRef);

gridColumnsStateSelector

Get the columns state

Signature:

gridColumnsStateSelector: (apiRef: GridApiRef) => GridColumnsState

Example

const columnsState = gridColumnsStateSelector(apiRef);

gridFilterableColumnDefinitionsSelector

Get the filterable columns as an array.

Signature:

gridFilterableColumnDefinitionsSelector: (apiRef: GridApiRef) => GridStateColDef[]

Example

const filterableColumnDefinitions = gridFilterableColumnDefinitionsSelector(apiRef);

gridFilterableColumnLookupSelector

Get the filterable columns as a lookup (an object containing the field for keys and the definition for values).

Signature:

gridFilterableColumnLookupSelector: (apiRef: GridApiRef) => GridColumnLookup

Example

const filterableColumnLookup = gridFilterableColumnLookupSelector(apiRef);

Visible Columns

gridColumnPositionsSelector

Get the left position in pixel of each visible columns relative to the left of the first column.

Signature:

gridColumnPositionsSelector: (apiRef: GridApiRef) => number[]

Example

const columnPositions = gridColumnPositionsSelector(apiRef);

gridColumnVisibilityModelSelector

Get the column visibility model, containing the visibility status of each column. If a column is not registered in the model, it is visible.

Signature:

gridColumnVisibilityModelSelector: (apiRef: GridApiRef) => GridColumnVisibilityModel

Example

const columnVisibilityModel = gridColumnVisibilityModelSelector(apiRef);

gridColumnsTotalWidthSelector

Get the summed width of all the visible columns.

Signature:

gridColumnsTotalWidthSelector: (apiRef: GridApiRef) => number

Example

const columnsTotalWidth = gridColumnsTotalWidthSelector(apiRef);

gridPinnedColumnsSelector

Get the visible pinned columns model.

Signature:

gridPinnedColumnsSelector: (apiRef: GridApiRef) => GridPinnedColumnFields

Example

const pinnedColumns = gridPinnedColumnsSelector(apiRef);

gridVisibleColumnDefinitionsSelector

Get the visible columns as a lookup (an object containing the field for keys and the definition for values).

Signature:

gridVisibleColumnDefinitionsSelector: (apiRef: GridApiRef) => GridStateColDef[]

Example

const visibleColumnDefinitions = gridVisibleColumnDefinitionsSelector(apiRef);

gridVisibleColumnFieldsSelector

Get the field of each visible column.

Signature:

gridVisibleColumnFieldsSelector: (apiRef: GridApiRef) => string[]

Example

const visibleColumnFields = gridVisibleColumnFieldsSelector(apiRef);

gridVisiblePinnedColumnDefinitionsSelector

Get the visible pinned columns.

Signature:

gridVisiblePinnedColumnDefinitionsSelector: (apiRef: GridApiRef) => { left: GridStateColDef[]; right: GridStateColDef[] }

Example

const visiblePinnedColumnDefinitions = gridVisiblePinnedColumnDefinitionsSelector(apiRef);

Filtering

gridExpandedRowCountSelector

Get the amount of rows accessible after the filtering process.

Signature:

gridExpandedRowCountSelector: (apiRef: GridApiRef) => number

Example

const expandedRowCount = gridExpandedRowCountSelector(apiRef);

gridExpandedSortedRowEntriesSelector

Get the id and the model of the rows accessible after the filtering process. Does not contain the collapsed children.

Signature:

gridExpandedSortedRowEntriesSelector: (apiRef: GridApiRef) => GridRowEntry<GridValidRowModel>[]

Example

const expandedSortedRowEntries = gridExpandedSortedRowEntriesSelector(apiRef);

gridExpandedSortedRowIdsSelector

Get the id of the rows accessible after the filtering process. Does not contain the collapsed children.

Signature:

gridExpandedSortedRowIdsSelector: (apiRef: GridApiRef) => GridRowId[]

Example

const expandedSortedRowIds = gridExpandedSortedRowIdsSelector(apiRef);

gridFilterModelSelector

Get the current filter model.

Signature:

gridFilterModelSelector: (apiRef: GridApiRef) => GridFilterModel

Example

const filterModel = gridFilterModelSelector(apiRef);

gridFilteredDescendantRowCountSelector

Get the amount of descendant rows accessible after the filtering process.

Signature:

gridFilteredDescendantRowCountSelector: (apiRef: GridApiRef) => number

Example

const filteredDescendantRowCount = gridFilteredDescendantRowCountSelector(apiRef);

gridFilteredRowCountSelector

Get the amount of rows accessible after the filtering process. Includes top level and descendant rows.

Signature:

gridFilteredRowCountSelector: (apiRef: GridApiRef) => number

Example

const filteredRowCount = gridFilteredRowCountSelector(apiRef);

gridFilteredSortedRowEntriesSelector

Get the id and the model of the rows accessible after the filtering process. Contains the collapsed children.

Signature:

gridFilteredSortedRowEntriesSelector: (apiRef: GridApiRef) => GridRowEntry<GridValidRowModel>[]

Example

const filteredSortedRowEntries = gridFilteredSortedRowEntriesSelector(apiRef);

gridFilteredSortedRowIdsSelector

Get the id of the rows accessible after the filtering process. Contains the collapsed children.

Signature:

gridFilteredSortedRowIdsSelector: (apiRef: GridApiRef) => GridRowId[]

Example

const filteredSortedRowIds = gridFilteredSortedRowIdsSelector(apiRef);

gridFilteredSortedTopLevelRowEntriesSelector

Get the id and the model of the top level rows accessible after the filtering process.

Signature:

gridFilteredSortedTopLevelRowEntriesSelector: (apiRef: GridApiRef) => GridRowEntry<GridValidRowModel>[]

Example

const filteredSortedTopLevelRowEntries = gridFilteredSortedTopLevelRowEntriesSelector(apiRef);

gridFilteredTopLevelRowCountSelector

Get the amount of top level rows accessible after the filtering process.

Signature:

gridFilteredTopLevelRowCountSelector: (apiRef: GridApiRef) => number

Example

const filteredTopLevelRowCount = gridFilteredTopLevelRowCountSelector(apiRef);

gridQuickFilterValuesSelector

Get the current quick filter values.

Signature:

gridQuickFilterValuesSelector: (apiRef: GridApiRef) => any[] | undefined

Example

const quickFilterValues = gridQuickFilterValuesSelector(apiRef);

Pagination

gridPageCountSelector

Get the amount of pages needed to display all the rows if the pagination is enabled

Signature:

gridPageCountSelector: (apiRef: GridApiRef) => number

Example

const pageCount = gridPageCountSelector(apiRef);

gridPageSelector

Get the index of the page to render if the pagination is enabled

Signature:

gridPageSelector: (apiRef: GridApiRef) => number

Example

const page = gridPageSelector(apiRef);

gridPageSizeSelector

Get the maximum amount of rows to display on a single page if the pagination is enabled

Signature:

gridPageSizeSelector: (apiRef: GridApiRef) => number

Example

const pageSize = gridPageSizeSelector(apiRef);

gridPaginatedVisibleSortedGridRowEntriesSelector

Get the id and the model of each row to include in the current page if the pagination is enabled.

Signature:

gridPaginatedVisibleSortedGridRowEntriesSelector: (apiRef: GridApiRef) => GridRowEntry<GridValidRowModel>[]

Example

const paginatedVisibleSortedGridRowEntries = gridPaginatedVisibleSortedGridRowEntriesSelector(apiRef);

gridPaginatedVisibleSortedGridRowIdsSelector

Get the id of each row to include in the current page if the pagination is enabled.

Signature:

gridPaginatedVisibleSortedGridRowIdsSelector: (apiRef: GridApiRef) => GridRowId[]

Example

const paginatedVisibleSortedGridRowIds = gridPaginatedVisibleSortedGridRowIdsSelector(apiRef);

gridPaginationMetaSelector

Get the pagination meta

Signature:

gridPaginationMetaSelector: (apiRef: GridApiRef) => GridPaginationMeta

Example

const paginationMeta = gridPaginationMetaSelector(apiRef);

gridPaginationModelSelector

Get the pagination model

Signature:

gridPaginationModelSelector: (apiRef: GridApiRef) => GridPaginationModel

Example

const paginationModel = gridPaginationModelSelector(apiRef);

gridPaginationRowCountSelector

Get the row count

Signature:

gridPaginationRowCountSelector: (apiRef: GridApiRef) => number

Example

const paginationRowCount = gridPaginationRowCountSelector(apiRef);

gridPaginationRowRangeSelector

Get the index of the first and the last row to include in the current page if the pagination is enabled.

Signature:

gridPaginationRowRangeSelector: (apiRef: GridApiRef) => { firstRowIndex: number; lastRowIndex: number } | null

Example

const paginationRowRange = gridPaginationRowRangeSelector(apiRef);

gridVisibleRowsSelector

Get the rows, range and rowIndex lookup map after filtering and sorting. Does not contain the collapsed children.

Signature:

gridVisibleRowsSelector: (apiRef: GridApiRef) => { rows: GridRowEntry<GridValidRowModel>[]; range: { firstRowIndex: number; lastRowIndex: number } | null; rowIdToIndexMap: Map<GridRowId, number> }

Example

const visibleRows = gridVisibleRowsSelector(apiRef);

Sorting

gridSortModelSelector

Get the current sorting model.

Signature:

gridSortModelSelector: (apiRef: GridApiRef) => GridSortModel

Example

const sortModel = gridSortModelSelector(apiRef);

gridSortedRowEntriesSelector

Get the id and the model of the rows after the sorting process.

Signature:

gridSortedRowEntriesSelector: (apiRef: GridApiRef) => GridRowEntry<GridValidRowModel>[]

Example

const sortedRowEntries = gridSortedRowEntriesSelector(apiRef);

gridSortedRowIdsSelector

Get the id of the rows after the sorting process.

Signature:

gridSortedRowIdsSelector: (apiRef: GridApiRef) => GridRowId[]

Example

const sortedRowIds = gridSortedRowIdsSelector(apiRef);

Virtualization

gridVirtualizationColumnEnabledSelector

Get the enabled state for column virtualization

Signature:

gridVirtualizationColumnEnabledSelector: (apiRef: GridApiRef) => boolean

Example

const virtualizationColumnEnabled = gridVirtualizationColumnEnabledSelector(apiRef);

gridVirtualizationEnabledSelector

Get the enabled state for virtualization

Signature:

gridVirtualizationEnabledSelector: (apiRef: GridApiRef) => boolean

Example

const virtualizationEnabled = gridVirtualizationEnabledSelector(apiRef);

gridVirtualizationRowEnabledSelector

Get the enabled state for row virtualization

Signature:

gridVirtualizationRowEnabledSelector: (apiRef: GridApiRef) => boolean

Example

const virtualizationRowEnabled = gridVirtualizationRowEnabledSelector(apiRef);

gridVirtualizationSelector

Get the columns state

Signature:

gridVirtualizationSelector: (apiRef: GridApiRef) => GridVirtualizationState

Example

const virtualization = gridVirtualizationSelector(apiRef);

Save and restore the state

The current state of the Data Grid can be exported using apiRef.current.exportState(). It can then be restored by either passing the returned value to the initialState prop or to the apiRef.current.restoreState() method.

Watch out for controlled models and their callbacks (onFilterModelChange if you use filterModel, for instance), as the Data Grid calls those callbacks when restoring the state. But if the callback is not defined or if calling it does not update the prop value, then the restored value will not be applied.

Restore the state with initialState

You can pass the state returned by apiRef.current.exportState() to the initialState prop.

In the demo below, clicking on Recreate the 2nd grid will re-mount the second Data Grid with the current state of the first Grid.

Save and restore the state from external storage

You can use apiRef.current.exportState() to save a snapshot of the state to an external storage (for example using local storage or redux). This way the state can be persisted on refresh or navigating to another page.

In the following demo, the state is saved to localStorage and restored when the page is refreshed. This is done by listening on the beforeunload event. When the component is unmounted, the useLayoutEffect cleanup function is being used instead.

Restore the state with apiRef

You can pass the state returned by apiRef.current.exportState() to the apiRef.current.restoreState method. In the demo below, clicking on Save current view will create a snapshot of the changes made in the state, considering the initial state. You can apply these changes on the Data Grid later selecting a saved view in the Custom view menu.

Restore part of the state

It is possible to restore specific properties of the state using the apiRef.current.restoreState() method. For instance, to only restore the pinned columns:

apiRef.current.restoreState({
  pinnedColumns: ['brand'],
});