mui/mui-x v9.12.0 on GitHub

We'd like to extend a big thank you to the 12 contributors who made this release possible. Here are some highlights ✨:

🧮 Support Formulas on the Data Grid: cells in opted-in columns can hold spreadsheet-like formulas (=SUM(RANGE(…)), =price * quantity) evaluated by a built-in engine, with a formula editor and Formula Bar, autocomplete, reference highlighting, optional A1 notation, fill-handle reference adjustment, custom functions, and live formula Excel export
♿️ Improve the accessibility of Data Grid cells and picker day cells
🗓️ Enable multi-resource event creation and editing in the Scheduler
🐞 Bugfixes
📚 Documentation improvements

Special thanks go out to these community members for their valuable contributions:
@Anexus5919, @mustafajw07

[DataGrid] Expose apiRef on GridCallbackDetails for selector access in callbacks (#22973) @michelengelen
[DataGrid] Fix header height not updating when headerFilters or columnGroupingModel change (#23059) @MBilalShafi
[DataGrid] Fix unhandled rejection when unmounting mid-autosize (#23319) @JCQuintas
[DataGrid] Label the blank singleSelect filter option (#23294) @JCQuintas
[DataGrid] Stop sending incomplete filter items to the data source (#23303) @JCQuintas
[DataGrid] Support the rowheader attribute for grid cells (#23340) @silviuaavram

Same changes as in @mui/x-data-grid@9.12.0, plus:

[DataGridPro] Honor hasNextPage in infinite lazy loading (#23048) @MBilalShafi

Same changes as in @mui/x-data-grid-pro@9.12.0, plus:

[fields] Keep the selected section on blank space clicks (#23318) @LukasTy
[pickers] Associate the day cells with their week day column header (#23339) @LukasTy
[pickers] Keep the gridcell role and the column index on filler cells (#23326) @Anexus5919

Same changes as in @mui/x-date-pickers@9.12.0, plus:

[DateRangeCalendar] Round the range highlight at the month grid edges (#23297) @JCQuintas
[DateRangePicker] Keep the range highlight opaque for disabled days (#23317) @JCQuintas

[charts] Add a demo for label on grid row (#23333) @noraleonte
[charts] Fix React 18 propTypes warnings and stray-pointer test flakiness (#23384) @LukasTy
[charts] Focus the clicked item for keyboard navigation (#23247) @JCQuintas

Same changes as in @mui/x-charts@9.12.0.

Same changes as in @mui/x-charts-pro@9.12.0, plus:

Internal changes.

Same changes as in @mui/x-tree-view@9.12.0.

[scheduler] Add onEventEditingStart to let consumers open their own edit UI (#23361) @rita-codes
[scheduler] Fix keyboard and focus issues around the "+N more" popover (#23312) @rita-codes
[scheduler] Honor viewConfig hour limits in the compact day and week views (#23316) @rita-codes
[scheduler] Share timeline event layout data (#23366) @flaviendelangle
[scheduler] enable multi-resource event creation and editing (#23313) @mustafajw07

Same changes as in @mui/x-scheduler@9.0.0-beta.10, plus:

[scheduler-premium] Allow to control the min and max hour in the Event Timeline (#23212) @rita-codes
[scheduler-premium] Dependencies - Create, select and delete via terminals (#23200) @rita-codes

Internal changes.

[docs][charts] Document line mark size customization (#23370) @JCQuintas
[docs] Add recipe for constraining the make-child drop action by item type (#22940) @michelengelen
[docs] Redirect the renamed Event Timeline views page (#23324) @brijeshb42
[docs] Remove unused adapter-dependencies.json (#23328) @LukasTy

[code-infra] Add release skill (#23308) @brijeshb42
[code-infra] Fix changelog categorization of docs and DateRangeCalendar tags (#23385) @JCQuintas
[code-infra] Sync mui-release skill (#23330) @brijeshb42