[DataGridPremium] Server-side data source with row grouping (@MBilalShafi)

docs/data/data-grid/row-grouping/row-grouping.md

@@ -11,6 +11,10 @@ In the following example, movies are grouped based on their production `company`
 
 {{"demo": "RowGroupingBasicExample.js", "bg": "inline", "defaultCodeOpen": false}}
 
+:::info
+If you are looking for row grouping on the server-side, see [server-side row grouping](/x/react-data-grid/server-side-data/row-grouping/).
+:::
+
 ## Grouping criteria
 
 ### Initialize the row grouping
@@ -252,6 +256,10 @@ Use the `setRowChildrenExpansion` method on `apiRef` to programmatically set the
 
 {{"demo": "RowGroupingSetChildrenExpansion.js", "bg": "inline", "defaultCodeOpen": false}}
 
+:::warning
+The `apiRef.current.setRowChildrenExpansion` method is not compatible with the [server-side tree data](/x/react-data-grid/server-side-data/tree-data/) and [server-side row grouping](/x/react-data-grid/server-side-data/row-grouping/). Use `apiRef.current.unstable_dataSource.fetchRows` instead.
+:::
+
 ### Customize grouping cell indent
 
 To change the default cell indent, you can use the `--DataGrid-cellOffsetMultiplier` CSS variable:
@@ -280,10 +288,6 @@ If you are rendering leaves with the `leafField` property of `groupingColDef`, t
 
 You can force the filtering to be applied on another grouping criteria with the `mainGroupingCriteria` property of `groupingColDef`
 
-:::warning
-This feature is not yet compatible with `sortingMode = "server"` and `filteringMode = "server"`.
-:::
-
 {{"demo": "RowGroupingFilteringSingleGroupingColDef.js", "bg": "inline", "defaultCodeOpen": false}}
 
 ### Multiple grouping columns
@@ -376,6 +380,10 @@ const rows = apiRef.current.getRowGroupChildren({
 
 {{"demo": "RowGroupingGetRowGroupChildren.js", "bg": "inline", "defaultCodeOpen": false}}
 
+:::warning
+The `apiRef.current.getRowGroupChildren` method is not compatible with the [server-side row grouping](/x/react-data-grid/server-side-data/row-grouping/) since all the rows might not be available to get at a given instance.
+:::
+
 ## Row group panel 🚧
 
 :::warning

docs/data/data-grid/server-side-data/ServerSideRowGroupingDataGrid.js

@@ -0,0 +1,69 @@
+import * as React from 'react';
+import {
+  DataGridPremium,
+  useGridApiRef,
+  useKeepGroupedColumnsHidden,
+} from '@mui/x-data-grid-premium';
+import { useMockServer } from '@mui/x-data-grid-generator';
+import Button from '@mui/material/Button';
+
+export default function ServerSideRowGroupingDataGrid() {
+  const apiRef = useGridApiRef();
+
+  const { fetchRows, columns } = useMockServer({
+    rowGrouping: true,
+  });
+
+  const dataSource = React.useMemo(() => {
+    return {
+      getRows: async (params) => {
+        const urlParams = new URLSearchParams({
+          paginationModel: JSON.stringify(params.paginationModel),
+          filterModel: JSON.stringify(params.filterModel),
+          sortModel: JSON.stringify(params.sortModel),
+          groupKeys: JSON.stringify(params.groupKeys),
+          groupFields: JSON.stringify(params.groupFields),
+        });
+        const getRowsResponse = await fetchRows(
+          `https://mui.com/x/api/data-grid?${urlParams.toString()}`,
+        );
+        return {
+          rows: getRowsResponse.rows,
+          rowCount: getRowsResponse.rowCount,
+        };
+      },
+      getGroupKey: (row) => row.group,
+      getChildrenCount: (row) => row.descendantCount,
+    };
+  }, [fetchRows]);
+
+  const initialState = useKeepGroupedColumnsHidden({
+    apiRef,
+    initialState: {
+      rowGrouping: {
+        model: ['company', 'director'],
+      },
+    },
+  });
+
+  return (
+    <div style={{ width: '100%' }}>
+      <Button
+        onClick={() => {
+          apiRef.current.unstable_dataSource.cache.clear();
+        }}
+      >
+        Clear cache
+      </Button>
+
+      <div style={{ height: 400, position: 'relative' }}>
+        <DataGridPremium
+          columns={columns}
+          unstable_dataSource={dataSource}
+          apiRef={apiRef}
+          initialState={initialState}
+        />
+      </div>
+    </div>
+  );
+}

docs/data/data-grid/server-side-data/ServerSideRowGroupingDataGrid.tsx

@@ -0,0 +1,70 @@
+import * as React from 'react';
+import {
+  DataGridPremium,
+  GridDataSource,
+  useGridApiRef,
+  useKeepGroupedColumnsHidden,
+} from '@mui/x-data-grid-premium';
+import { useMockServer } from '@mui/x-data-grid-generator';
+import Button from '@mui/material/Button';
+
+export default function ServerSideRowGroupingDataGrid() {
+  const apiRef = useGridApiRef();
+
+  const { fetchRows, columns } = useMockServer({
+    rowGrouping: true,
+  });
+
+  const dataSource: GridDataSource = React.useMemo(() => {
+    return {
+      getRows: async (params) => {
+        const urlParams = new URLSearchParams({
+          paginationModel: JSON.stringify(params.paginationModel),
+          filterModel: JSON.stringify(params.filterModel),
+          sortModel: JSON.stringify(params.sortModel),
+          groupKeys: JSON.stringify(params.groupKeys),
+          groupFields: JSON.stringify(params.groupFields),
+        });
+        const getRowsResponse = await fetchRows(
+          `https://mui.com/x/api/data-grid?${urlParams.toString()}`,
+        );
+        return {
+          rows: getRowsResponse.rows,
+          rowCount: getRowsResponse.rowCount,
+        };
+      },
+      getGroupKey: (row) => row.group,
+      getChildrenCount: (row) => row.descendantCount,
+    };
+  }, [fetchRows]);
+
+  const initialState = useKeepGroupedColumnsHidden({
+    apiRef,
+    initialState: {
+      rowGrouping: {
+        model: ['company', 'director'],
+      },
+    },
+  });
+
+  return (
+    <div style={{ width: '100%' }}>
+      <Button
+        onClick={() => {
+          apiRef.current.unstable_dataSource.cache.clear();
+        }}
+      >
+        Clear cache
+      </Button>
+
+      <div style={{ height: 400, position: 'relative' }}>
+        <DataGridPremium
+          columns={columns}
+          unstable_dataSource={dataSource}
+          apiRef={apiRef}
+          initialState={initialState}
+        />
+      </div>
+    </div>
+  );
+}

docs/data/data-grid/server-side-data/ServerSideRowGroupingDataGrid.tsx.preview

@@ -0,0 +1,16 @@
+<Button
+  onClick={() => {
+    apiRef.current.unstable_dataSource.cache.clear();
+  }}
+>
+  Clear cache
+</Button>
+
+<div style={{ height: 400, position: 'relative' }}>
+  <DataGridPremium
+    columns={columns}
+    unstable_dataSource={dataSource}
+    apiRef={apiRef}
+    initialState={initialState}
+  />
+</div>

docs/data/data-grid/server-side-data/ServerSideRowGroupingErrorHandling.js

@@ -0,0 +1,137 @@
+import * as React from 'react';
+import {
+  DataGridPremium,
+  useGridApiRef,
+  useKeepGroupedColumnsHidden,
+} from '@mui/x-data-grid-premium';
+import { useMockServer } from '@mui/x-data-grid-generator';
+import Snackbar from '@mui/material/Snackbar';
+import Button from '@mui/material/Button';
+import Checkbox from '@mui/material/Checkbox';
+import FormControlLabel from '@mui/material/FormControlLabel';
+import { alpha, styled, darken, lighten } from '@mui/material/styles';
+
+export default function ServerSideRowGroupingErrorHandling() {
+  const apiRef = useGridApiRef();
+  const [rootError, setRootError] = React.useState();
+  const [childrenError, setChildrenError] = React.useState();
+  const [shouldRequestsFail, setShouldRequestsFail] = React.useState(false);
+
+  const { fetchRows, columns } = useMockServer(
+    {
+      rowGrouping: true,
+    },
+    {},
+    shouldRequestsFail,
+  );
+
+  const dataSource = React.useMemo(() => {
+    return {
+      getRows: async (params) => {
+        const urlParams = new URLSearchParams({
+          paginationModel: JSON.stringify(params.paginationModel),
+          filterModel: JSON.stringify(params.filterModel),
+          sortModel: JSON.stringify(params.sortModel),
+          groupKeys: JSON.stringify(params.groupKeys),
+          groupFields: JSON.stringify(params.groupFields),
+        });
+        const getRowsResponse = await fetchRows(
+          `https://mui.com/x/api/data-grid?${urlParams.toString()}`,
+        );
+        return {
+          rows: getRowsResponse.rows,
+          rowCount: getRowsResponse.rowCount,
+        };
+      },
+      getGroupKey: (row) => row.group,
+      getChildrenCount: (row) => row.descendantCount,
+    };
+  }, [fetchRows]);
+
+  const initialState = useKeepGroupedColumnsHidden({
+    apiRef,
+    initialState: {
+      rowGrouping: {
+        model: ['company', 'director'],
+      },
+    },
+  });
+
+  return (
+    <div style={{ width: '100%' }}>
+      <div style={{ display: 'flex', justifyContent: 'space-between' }}>
+        <Button
+          onClick={() => {
+            setRootError('');
+            apiRef.current.unstable_dataSource.fetchRows();
+          }}
+        >
+          Refetch rows
+        </Button>
+        <FormControlLabel
+          control={
+            <Checkbox
+              checked={shouldRequestsFail}
+              onChange={(event) => setShouldRequestsFail(event.target.checked)}
+            />
+          }
+          label="Make the requests fail"
+        />
+      </div>
+      <div style={{ height: 400, position: 'relative' }}>
+        <DataGridPremium
+          columns={columns}
+          unstable_dataSource={dataSource}
+          unstable_onDataSourceError={(error, params) => {
+            if (!params.groupKeys || params.groupKeys.length === 0) {
+              setRootError(error.message);
+            } else {
+              setChildrenError(
+                `${error.message} (Requested level: ${params.groupKeys.join(' > ')})`,
+              );
+            }
+          }}
+          unstable_dataSourceCache={null}
+          apiRef={apiRef}
+          initialState={initialState}
+        />
+        {rootError && <ErrorOverlay error={rootError} />}
+        <Snackbar
+          open={!!childrenError}
+          autoHideDuration={3000}
+          onClose={() => setChildrenError('')}
+          message={childrenError}
+        />
+      </div>
+    </div>
+  );
+}
+
+function getBorderColor(theme) {
+  if (theme.palette.mode === 'light') {
+    return lighten(alpha(theme.palette.divider, 1), 0.88);
+  }
+  return darken(alpha(theme.palette.divider, 1), 0.68);
+}
+
+const StyledDiv = styled('div')(({ theme: t }) => ({
+  position: 'absolute',
+  zIndex: 10,
+  fontSize: '0.875em',
+  top: 0,
+  height: '100%',
+  width: '100%',
+  display: 'flex',
+  alignItems: 'center',
+  justifyContent: 'center',
+  borderRadius: '4px',
+  border: `1px solid ${getBorderColor(t)}`,
+  backgroundColor: t.palette.background.default,
+}));
+
+function ErrorOverlay({ error }) {
+  if (!error) {
+    return null;
+  }
+  return <StyledDiv>{error}</StyledDiv>;
+}