[data grid] Valueparser not called when clearing cell

[louisaaron]

The problem in depth

Here's the current flow when you edit a selected cell (single click not double click) with a custom cell editor then start typing a value:

1. DataGrid calls colDef.valueSetter with empty string (even if the colDef value type IS NOT STRING) to "clear" the cell
2. It opens the cell editor and forwards the key press event.
3. Generally, the renderer's onChange function is called, which calls startCellEditMode, setEditCellValue, and stopCellEditMode.
4. valueParser gets called with the value in setEditCellValue
5. valueSetter gets called with the parsed value and then finally processRowUpdate gets called with the updated row.

What should happen:

1. DataGrid calls valueParser with empty string to "clear" the cell.
2. DataGrid calls valueSetter with the parsedValue (which will be whatever the colDef decides the default/no value should be typed as)
3. It opens the cell editor and forwards the key press event.
4. Generally, the renderer's onChange function is called, which calls startCellEditMode, setEditCellValue, and stopCellEditMode.
5. valueParser gets called with the value in setEditCellValue
6. valueSetter gets called with the parsed value and then finally processRowUpdate gets called with the updated row.

Your environment

`npx @mui/envinfo`

System:
    OS: macOS 13.6.4
  Binaries:
    Node: 20.14.0 - ~/.nvm/versions/node/v20.14.0/bin/node
    npm: 10.7.0 - ~/.nvm/versions/node/v20.14.0/bin/npm
    pnpm: Not Found
  Browsers:
    Chrome: 126.0.6478.116
    Edge: Not Found
    Safari: 16.6
  npmPackages:
    @emotion/react: ^11.11.1 => 11.11.1 
    @emotion/styled: ^11.8.1 => 11.11.0 
    @mui/base:  5.0.0-beta.18 
    @mui/core-downloads-tracker:  5.14.12 
    @mui/icons-material: ^5.8.0 => 5.14.12 
    @mui/lab: ^5.0.0-alpha.86 => 5.0.0-alpha.147 
    @mui/material: ^5.8.1 => 5.14.12 
    @mui/private-theming:  5.14.12 
    @mui/styled-engine:  5.14.12 
    @mui/system:  5.14.12 
    @mui/types:  7.2.5 
    @mui/utils:  5.14.12 
    @mui/x-data-grid:  6.19.10 
    @mui/x-data-grid-premium: 6.19.10 => 6.19.10 
    @mui/x-data-grid-pro:  6.19.10 
    @mui/x-date-pickers:  6.19.9 
    @mui/x-date-pickers-pro: ^6.19.3 => 6.19.9 
    @mui/x-license: ^7.0.0-beta.2 => 7.0.0-beta.2 
    @mui/x-license-pro: ^6.10.2 => 6.10.2 
    @mui/x-tree-view:  6.0.0-alpha.1 
    @types/react: ^18.0.6 => 18.2.25 
    react: ^18.1.0 => 18.2.0 
    react-dom: ^18.1.0 => 18.2.0 
    styled-components:  5.3.11 
    typescript: ^5.1.6 => 5.2.2 

Search keywords: valueparser

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[michelengelen]

Hey @louisaaron ... this should only happen in row edit mode.
We did adjust this in #12216 for cell editing, but missed this for row editing.

Here is a diff that gets a potential fix started:

diff --git a/packages/x-data-grid/src/hooks/features/editing/useGridRowEditing.ts b/packages/x-data-grid/src/hooks/features/editing/useGridRowEditing.ts
index 33932d806..41c33fceb 100644
--- a/packages/x-data-grid/src/hooks/features/editing/useGridRowEditing.ts
+++ b/packages/x-data-grid/src/hooks/features/editing/useGridRowEditing.ts
@@ -442,7 +442,28 @@ export const useGridRowEditing = (

         let newValue = apiRef.current.getCellValue(id, field);
         if (fieldToFocus === field && (deleteValue || initialValue)) {
-          newValue = deleteValue ? '' : initialValue;
+          if (deleteValue) {
+            const fieldType = apiRef.current.getColumn(field).type;
+            switch (fieldType) {
+              case 'boolean':
+                newValue = false;
+                break;
+              case 'date':
+              case 'dateTime':
+              case 'number':
+                newValue = undefined;
+                break;
+              case 'singleSelect':
+                newValue = null;
+                break;
+              case 'string':
+              default:
+                newValue = '';
+                break;
+            }
+          } else if (initialValue) {
+            newValue = initialValue;
+          }
         }

         acc[field] = {

I'll open this up as a good first issue. 👍🏼

[kmr-ankitt]

assign me

[michelengelen]

Hey @kmr-ankitt sry for the late reply. I have been on PTO.
I just assigned it to you! Looking forward to the PR! 💪🏼

[louisaaron]

Hey guys! Any progress here? Thanks

[michelengelen]

Nothing yet @louisaaron ... I'll open a PR myself to fix this!

[louisaaron]

Awesome thanks so much @michelengelen

[github-actions]

This issue has been closed. If you have a similar problem but not exactly the same, please open a new issue.
Now, if you have additional information related to this issue or things that could help future readers, feel free to leave a comment.

Note

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[louisaaron]

Thanks @michelengelen !