Migration from v7 to v8

This guide describes the changes needed to migrate the Data Grid from v7 to v8.

Introduction

This is a reference guide for upgrading @mui/x-data-grid from v7 to v8.

Start using the new release

In package.json, change the version of the Data Grid package to next.

-"@mui/x-data-grid": "^7.0.0",
+"@mui/x-data-grid": "next",

-"@mui/x-data-grid-pro": "^7.0.0",
+"@mui/x-data-grid-pro": "next",

-"@mui/x-data-grid-premium": "^7.0.0",
+"@mui/x-data-grid-premium": "next",

Using next ensures that it will always use the latest v8 pre-release version, but you can also use a fixed version, like 8.0.0-alpha.0.

Since v8 is a major release, it contains some changes that affect the public API. These changes were done for consistency, improve stability and make room for new features. Below are described the steps you need to make to migrate from v7 to v8.

Props

Passing additional props (like data-*, aria-*) directly on the Data Grid component is no longer supported. To pass the props, use slotProps:
- For the .root element, use slotProps.root
- For the .main element (the one with role="grid"), use slotProps.main

Selection

The default value of the rowSelectionPropagation prop has been changed to { parents: true, descendants: true } which means that the selection will be propagated to the parents and descendants by default. To revert to the previous behavior, pass rowSelectionPropagation={{ parents: false, descendants: false }}.
The prop indeterminateCheckboxAction has been removed. Clicking on an indeterminate checkbox "selects" the unselected descendants.
The "Select all" checkbox would now be checked when all the selectable rows are selected, ignoring rows that are not selectable because of the isRowSelectable prop.

Changes to the public API

The rowPositionsDebounceMs prop was removed.
The apiRef.current.resize() method was removed.
The <GridOverlays /> component is not exported anymore.
The sanitizeFilterItemValue() utility is not exported anymore.

gridRowsDataRowIdToIdLookupSelector was removed. Use gridRowsLookupSelector in combination with getRowId() API method instead.

-const idToIdLookup = gridRowsDataRowIdToIdLookupSelector(apiRef);
-const rowId = idToIdLookup[id];
+const rowsLookup = gridRowsLookupSelector(apiRef);
+const rowId = apiRef.current.getRowId(rowsLookup[id]);

The feature row spanning is now stable.

 <DataGrid
-  unstable_rowSpanning
+  rowSpanning
 />

Return type of the useGridApiRef() hook and the type of apiRef prop are updated to explicitly include the possibilty of null. In addition to this, useGridApiRef() returns a reference that is initialized with null instead of {}.

Only the initial value and the type are updated. Logic that initializes the API and its availability remained the same, which means that if you could access API in a particular line of your code before, you are able to access it as well after this change.

Depending on the context in which the API is being used, you can decide what is the best way to deal with null value. Some options are:
- Use optional chaining
- Use non-null assertion operator if you are sure your code is always executed when the apiRef is not null
- Return early if apiRef is null
- Throw an error if apiRef is null

Localization

If estimatedRowCount is used, the text provided to the Table Pagination component from the Material UI library is updated and requires additional translations. Check the example at the end of Index-based pagination section.

Accessibility

The Grid is more aligned with the WAI-ARIA authoring practices and sets the role attribute to treegrid if the Data Grid is used with row grouping feature.

State

The selectors signature has been updated due to the support of arguments in the selectors. Pass undefined as arguments if the selector doesn't use any arguments.
```
-mySelector(state, instanceId)
+mySelector(state, arguments, instanceId)
```
The useGridSelector signature has been updated due to the introduction of arguments parameter in the selectors. Pass undefined as arguments if the selector doesn't use any arguments.
```
-const output = useGridSelector(apiRef, selector, equals);
+const output = useGridSelector(apiRef, selector, arguments, equals);
```

Other exports

ariaV8 experimental flag is removed. It's now the default behavior.

Filtering

The clear button in header filter cells has moved to the header filter menu. Use slotProps={{ headerFilterCell: { showClearIcon: true } }} to restore the clear button in the cell.
Custom filter input components typings have been modified.

CSS classes and styling

The Data Grid now has a default background color, and its customization has moved from theme.mixins.MuiDataGrid to theme.palette.DataGrid with the following properties:
- bg: Sets the background color of the entire grid (new property)
- headerBg: Sets the background color of the header (previously named containerBackground)
- pinnedBg: Sets the background color of pinned rows and columns (previously named pinnedBackground)
```
 const theme = createTheme({
-  mixins: {
-    MuiDataGrid: {
-      containerBackground: '#f8fafc',
-      pinnedBackground: '#f1f5f9',
-    },
-  },
+  palette: {
+    DataGrid: {
+      bg: '#f8fafc',
+      headerBg: '#e2e8f0',
+      pinnedBg: '#f1f5f9',
+    },
+  },
 });
```
The detailPanels, pinnedColumns, and pinnedRowsRenderZone classes have been removed.