[DataGrid] Allow to ignore diacritics when filtering

docs/data/data-grid/filtering/QuickFilteringDiacritics.js

@@ -0,0 +1,41 @@
+import * as React from 'react';
+import { DataGrid, GridToolbar } from '@mui/x-data-grid';
+import FormControlLabel from '@mui/material/FormControlLabel';
+import Switch from '@mui/material/Switch';
+
+const rows = [{ id: 0, value: 'Café' }];
+const columns = [{ field: 'value', width: 150 }];
+
+export default function QuickFilteringDiacritics() {
+  const [ignoreDiacritics, setIgnoreDiacritics] = React.useState(true);
+
+  return (
+    <div style={{ width: '100%' }}>
+      <FormControlLabel
+        checked={ignoreDiacritics}
+        onChange={(event) => setIgnoreDiacritics(event.target.checked)}
+        control={<Switch color="primary" size="small" />}
+        label="Ignore diacritics"
+      />
+      <div style={{ height: 200, width: '100%' }}>
+        <DataGrid
+          key={ignoreDiacritics.toString()}
+          rows={rows}
+          columns={columns}
+          initialState={{
+            filter: {
+              filterModel: { items: [], quickFilterValues: ['cafe'] },
+            },
+          }}
+          disableColumnFilter
+          disableColumnSelector
+          disableDensitySelector
+          hideFooter
+          slots={{ toolbar: GridToolbar }}
+          slotProps={{ toolbar: { showQuickFilter: true } }}
+          ignoreDiacriticsInFiltering={ignoreDiacritics}
+        />
+      </div>
+    </div>
+  );
+}

docs/data/data-grid/filtering/QuickFilteringDiacritics.preview

@@ -0,0 +1 @@
+<DataGrid rows={[{ id: 0, value: 'Café' }]} columns={columns} />

docs/data/data-grid/filtering/QuickFilteringDiacritics.tsx

@@ -0,0 +1,43 @@
+import * as React from 'react';
+import { DataGrid, GridToolbar, GridColDef } from '@mui/x-data-grid';
+import FormControlLabel from '@mui/material/FormControlLabel';
+import Switch from '@mui/material/Switch';
+
+const rows = [{ id: 0, value: 'Café' }];
+const columns: GridColDef[] = [{ field: 'value', width: 150 }];
+
+export default function QuickFilteringDiacritics() {
+  const [ignoreDiacritics, setIgnoreDiacritics] = React.useState(true);
+
+  return (
+    <div style={{ width: '100%' }}>
+      <FormControlLabel
+        checked={ignoreDiacritics}
+        onChange={(event) =>
+          setIgnoreDiacritics((event.target as HTMLInputElement).checked)
+        }
+        control={<Switch color="primary" size="small" />}
+        label="Ignore diacritics"
+      />
+      <div style={{ height: 200, width: '100%' }}>
+        <DataGrid
+          key={ignoreDiacritics.toString()}
+          rows={rows}
+          columns={columns}
+          initialState={{
+            filter: {
+              filterModel: { items: [], quickFilterValues: ['cafe'] },
+            },
+          }}
+          disableColumnFilter
+          disableColumnSelector
+          disableDensitySelector
+          hideFooter
+          slots={{ toolbar: GridToolbar }}
+          slotProps={{ toolbar: { showQuickFilter: true } }}
+          ignoreDiacriticsInFiltering={ignoreDiacritics}
+        />
+      </div>
+    </div>
+  );
+}

docs/data/data-grid/filtering/header-filters.md

@@ -72,6 +72,10 @@ Additionally, `slots.headerFilterMenu` could also be used to customize the menu
 
 {{"demo": "CustomHeaderFilterDataGridPro.js", "bg": "inline", "defaultCodeOpen": false}}
 
+## Ignore diacritics (accents)
+
+You can ignore diacritics (accents) when filtering the rows. See [Quick filter - Ignore diacritics (accents)](/x/react-data-grid/filtering/quick-filter/#ignore-diacritics-accents).
+
 ## API
 
 - [DataGrid](/x/api/data-grid/data-grid/)

docs/data/data-grid/filtering/index.md

@@ -127,6 +127,10 @@ In the example below, the _rating_ column can not be filtered.
 
 {{"demo": "DisableFilteringGridSomeColumns.js", "bg": "inline", "defaultCodeOpen": false}}
 
+## Ignore diacritics (accents)
+
+You can ignore diacritics (accents) when filtering the rows. See [Quick filter - Ignore diacritics (accents)](/x/react-data-grid/filtering/quick-filter/#ignore-diacritics-accents).
+
 ## apiRef
 
 The grid exposes a set of methods that enables all of these features using the imperative `apiRef`. To know more about how to use it, check the [API Object](/x/react-data-grid/api-object/) section.

docs/data/data-grid/filtering/quick-filter.md

@@ -122,6 +122,23 @@ In the following demo, the quick filter value `"Saint Martin, Saint Lucia"` will
 
 {{"demo": "QuickFilteringCustomizedGrid.js", "bg": "inline", "defaultCodeOpen": false}}
 
+## Ignore diacritics (accents)
+
+In some languages, the letters can have diacritics (accents) - for instance, the letter `é` in French.
+By default, these letters are considered different from their non-accented versions when filtering.
+
+To ignore diacritics, set the `ignoreDiacriticsInFiltering` prop to `true`:
+
+```tsx
+<DataGrid ignoreDiacriticsInFiltering />
+```
+
+{{"demo": "QuickFilteringDiacritics.js", "bg": "inline", "defaultCodeOpen": false}}
+
+:::warning
+Note that the `ignoreDiacriticsInFiltering` prop affects all columns and all types of filters: [regular filters](/x/react-data-grid/filtering/), [Quick filter](/x/react-data-grid/filtering/quick-filter/) and [Header filters](/x/react-data-grid/filtering/header-filters/).
+:::
+
 ## API
 
 - [GridToolbarQuickFilter](/x/api/data-grid/grid-toolbar-quick-filter/)

docs/pages/x/api/data-grid/data-grid-premium.json

@@ -184,6 +184,7 @@
       "default": "false"
     },
     "hideFooterSelectedRowCount": { "type": { "name": "bool" } },
+    "ignoreDiacriticsInFiltering": { "type": { "name": "bool" } },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },

docs/pages/x/api/data-grid/data-grid-pro.json

@@ -163,6 +163,7 @@
       "default": "false"
     },
     "hideFooterSelectedRowCount": { "type": { "name": "bool" } },
+    "ignoreDiacriticsInFiltering": { "type": { "name": "bool" } },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },

docs/pages/x/api/data-grid/data-grid.json

@@ -114,6 +114,7 @@
     "hideFooter": { "type": { "name": "bool" } },
     "hideFooterPagination": { "type": { "name": "bool" } },
     "hideFooterSelectedRowCount": { "type": { "name": "bool" } },
+    "ignoreDiacriticsInFiltering": { "type": { "name": "bool" } },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },

docs/translations/api-docs/data-grid/data-grid-premium.json

@@ -343,6 +343,11 @@
       "deprecated": "",
       "typeDescriptions": {}
     },
+    "ignoreDiacriticsInFiltering": {
+      "description": "If <code>true</code>, the diacritics (accents) are ignored when filtering or quick filtering. * E.g. when filter value is <code>cafe</code>, the rows with <code>café</code> will be visible.",
+      "deprecated": "",
+      "typeDescriptions": {}
+    },
     "initialState": {
       "description": "The initial state of the DataGridPremium. The data in it is set in the state on initialization but isn&#39;t controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins.",
       "deprecated": "",

docs/translations/api-docs/data-grid/data-grid-pro.json

@@ -305,6 +305,11 @@
       "deprecated": "",
       "typeDescriptions": {}
     },
+    "ignoreDiacriticsInFiltering": {
+      "description": "If <code>true</code>, the diacritics (accents) are ignored when filtering or quick filtering. * E.g. when filter value is <code>cafe</code>, the rows with <code>café</code> will be visible.",
+      "deprecated": "",
+      "typeDescriptions": {}
+    },
     "initialState": {
       "description": "The initial state of the DataGridPro. The data in it will be set in the state on initialization but will not be controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins.",
       "deprecated": "",

docs/translations/api-docs/data-grid/data-grid.json

@@ -209,6 +209,11 @@
       "deprecated": "",
       "typeDescriptions": {}
     },
+    "ignoreDiacriticsInFiltering": {
+      "description": "If <code>true</code>, the diacritics (accents) are ignored when filtering or quick filtering. * E.g. when filter value is <code>cafe</code>, the rows with <code>café</code> will be visible.",
+      "deprecated": "",
+      "typeDescriptions": {}
+    },
     "initialState": {
       "description": "The initial state of the DataGrid. The data in it will be set in the state on initialization but will not be controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins.",
       "deprecated": "",

packages/grid/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx

@@ -461,6 +461,12 @@ DataGridPremiumRaw.propTypes = {
    * @default false
    */
   hideFooterSelectedRowCount: PropTypes.bool,
+  /**
+   * If `true`, the diacritics (accents) are ignored when filtering or quick filtering.
+   * * E.g. when filter value is `cafe`, the rows with `café` will be visible.
+   * @default false
+   */
+  ignoreDiacriticsInFiltering: PropTypes.bool,
   /**
    * The initial state of the DataGridPremium.
    * The data in it is set in the state on initialization but isn't controlled.

packages/grid/x-data-grid-premium/src/hooks/features/rowGrouping/gridRowGroupingUtils.ts

@@ -15,7 +15,6 @@ import {
   GridAggregatedFilterItemApplier,
   GridAggregatedFilterItemApplierResult,
   GridColumnRawLookup,
-  GridApiCommunity,
 } from '@mui/x-data-grid-pro/internals';
 import { DataGridPremiumProcessedProps } from '../../../models/dataGridPremiumProps';
 import { GridGroupingValueGetterParams } from '../../../models/gridGroupingValueGetterParams';
@@ -58,7 +57,7 @@ interface FilterRowTreeFromTreeDataParams {
   rowTree: GridRowTreeConfig;
   isRowMatchingFilters: GridAggregatedFilterItemApplier | null;
   filterModel: GridFilterModel;
-  apiRef: React.MutableRefObject<GridApiCommunity>;
+  apiRef: React.MutableRefObject<GridPrivateApiPremium>;
 }
 
 /**

packages/grid/x-data-grid-premium/src/models/gridApiPremium.ts

@@ -13,6 +13,7 @@ import {
 import { GridInitialStatePremium, GridStatePremium } from './gridStatePremium';
 import type { GridRowGroupingApi, GridExcelExportApi, GridAggregationApi } from '../hooks';
 import { GridCellSelectionApi } from '../hooks/features/cellSelection/gridCellSelectionInterfaces';
+import type { DataGridPremiumProcessedProps } from './dataGridPremiumProps';
 
 /**
  * The api of `DataGridPremium`.
@@ -35,5 +36,5 @@ export interface GridApiPremium
 
 export interface GridPrivateApiPremium
   extends GridApiPremium,
-    GridPrivateOnlyApiCommon<GridApiPremium, GridPrivateApiPremium>,
+    GridPrivateOnlyApiCommon<GridApiPremium, GridPrivateApiPremium, DataGridPremiumProcessedProps>,
     GridDetailPanelPrivateApi {}

packages/grid/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx

@@ -421,6 +421,12 @@ DataGridProRaw.propTypes = {
    * @default false
    */
   hideFooterSelectedRowCount: PropTypes.bool,
+  /**
+   * If `true`, the diacritics (accents) are ignored when filtering or quick filtering.
+   * * E.g. when filter value is `cafe`, the rows with `café` will be visible.
+   * @default false
+   */
+  ignoreDiacriticsInFiltering: PropTypes.bool,
   /**
    * The initial state of the DataGridPro.
    * The data in it will be set in the state on initialization but will not be controlled.

packages/grid/x-data-grid-pro/src/hooks/features/treeData/gridTreeDataUtils.ts

@@ -8,16 +8,16 @@ import {
 import {
   GridAggregatedFilterItemApplier,
   GridAggregatedFilterItemApplierResult,
-  GridApiCommunity,
   passFilterLogic,
 } from '@mui/x-data-grid/internals';
+import type { GridPrivateApiPro } from '../../../models/gridApiPro';
 
 interface FilterRowTreeFromTreeDataParams {
   rowTree: GridRowTreeConfig;
   disableChildrenFiltering: boolean;
   isRowMatchingFilters: GridAggregatedFilterItemApplier | null;
   filterModel: GridFilterModel;
-  apiRef: React.MutableRefObject<GridApiCommunity>;
+  apiRef: React.MutableRefObject<GridPrivateApiPro>;
 }
 
 export const TREE_DATA_STRATEGY = 'tree-data';

packages/grid/x-data-grid-pro/src/models/gridApiPro.ts

@@ -13,6 +13,7 @@ import type {
   GridRowPinningApi,
   GridDetailPanelPrivateApi,
 } from '../hooks';
+import type { DataGridProProcessedProps } from './dataGridProProps';
 
 /**
  * The api of `DataGridPro`.
@@ -30,5 +31,5 @@ export interface GridApiPro
 
 export interface GridPrivateApiPro
   extends GridApiPro,
-    GridPrivateOnlyApiCommon<GridApiPro, GridPrivateApiPro>,
+    GridPrivateOnlyApiCommon<GridApiPro, GridPrivateApiPro, DataGridProProcessedProps>,
     GridDetailPanelPrivateApi {}

packages/grid/x-data-grid/src/DataGrid/DataGrid.tsx

@@ -301,6 +301,12 @@ DataGridRaw.propTypes = {
    * @default false
    */
   hideFooterSelectedRowCount: PropTypes.bool,
+  /**
+   * If `true`, the diacritics (accents) are ignored when filtering or quick filtering.
+   * * E.g. when filter value is `cafe`, the rows with `café` will be visible.
+   * @default false
+   */
+  ignoreDiacriticsInFiltering: PropTypes.bool,
   /**
    * The initial state of the DataGrid.
    * The data in it will be set in the state on initialization but will not be controlled.

packages/grid/x-data-grid/src/DataGrid/useDataGridProps.ts

@@ -62,6 +62,7 @@ export const DATA_GRID_PROPS_DEFAULT_VALUES: DataGridPropsWithDefaultValues = {
   hideFooterPagination: false,
   hideFooterRowCount: false,
   hideFooterSelectedRowCount: false,
+  ignoreDiacriticsInFiltering: false,
   logger: console,
   logLevel: process.env.NODE_ENV === 'production' ? ('error' as const) : ('warn' as const),
   pagination: false,

packages/grid/x-data-grid/src/colDef/gridStringOperators.ts

@@ -12,8 +12,7 @@ export const getGridStringQuickFilterFn = tagInternalFilter(
       return null;
     }
     const filterRegex = new RegExp(escapeRegExp(value), 'i');
-    return (_, row, column, apiRef): boolean => {
-      const columnValue = apiRef.current.getRowFormattedValue(row, column);
+    return (columnValue): boolean => {
       return columnValue != null ? filterRegex.test(columnValue.toString()) : false;
     };
   },

packages/grid/x-data-grid/src/hooks/core/useGridInitialization.ts

@@ -16,7 +16,7 @@ export const useGridInitialization = <
   Api extends GridApiCommon,
 >(
   inputApiRef: React.MutableRefObject<Api> | undefined,
-  props: Pick<DataGridProcessedProps, 'signature' | 'logger' | 'logLevel' | 'localeText'>,
+  props: DataGridProcessedProps,
 ) => {
   const privateApiRef = useGridApiInitialization<PrivateApi, Api>(inputApiRef, props);
   useGridLoggerFactory(privateApiRef, props);
@@ -25,5 +25,7 @@ export const useGridInitialization = <
   useGridStrategyProcessing(privateApiRef);
   useGridLocaleText(privateApiRef, props);
 
+  privateApiRef.current.register('private', { getRootProps: () => props });
+
   return privateApiRef;
 };