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[DataGridPro] Fix duplicate nested rows for dynamically updated row IDs #18526

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[DataGridPro] Fix duplicate nested rows for dynamically updated row IDs #18526

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ad3a7eb
[DataGridPro] Fix duplicate nested rows for dynamically updated row IDs
MBilalShafi Jun 25, 2025
382bbc7
Lint
MBilalShafi Jun 25, 2025
770ddb8
Merge branch 'master' into fix/data-source-dynamic-children
MBilalShafi Jun 25, 2025
fab847a
Make insertedRows an optional param
MBilalShafi Jun 26, 2025
5e7502b
Use concat
MBilalShafi Jun 27, 2025
1063c36
Prettier
MBilalShafi Jun 28, 2025
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5 changes: 5 additions & 0 deletions packages/x-data-grid/src/hooks/features/rows/gridRowsUtils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -393,6 +393,7 @@ export function computeRowsUpdates(
apiRef: RefObject<GridApiCommunity>,
updates: GridRowModelUpdate[],
getRowId: DataGridProcessedProps['getRowId'],
insertedNodes?: Set<GridRowId>,
) {
const nonPinnedRowsUpdates: GridRowModelUpdate[] = [];

Expand All @@ -416,6 +417,10 @@ export function computeRowsUpdates(
}
} else {
nonPinnedRowsUpdates.push(update);
// eslint-disable-next-line no-underscore-dangle
if (update._action !== 'delete') {
insertedNodes?.add(id);
}
}
});
return nonPinnedRowsUpdates;
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50 changes: 48 additions & 2 deletions packages/x-data-grid/src/hooks/features/rows/useGridRows.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -215,10 +215,56 @@ export const useGridRows = (

const updateNestedRows = React.useCallback<GridRowProPrivateApi['updateNestedRows']>(
(updates, groupKeys) => {
const nonPinnedRowsUpdates = computeRowsUpdates(apiRef, updates, props.getRowId);
const insertedNodes = new Set<GridRowId>();
const nonPinnedRowsUpdates = computeRowsUpdates(
apiRef,
updates,
props.getRowId,
insertedNodes,
);

const tree = gridRowTreeSelector(apiRef);
const removedNodes = new Set<GridRowId>();

if (groupKeys && groupKeys.length > 0) {
const rootNode = tree[GRID_ROOT_GROUP_ID];
let parentNode = rootNode;
for (let i = 0; i < groupKeys.length; i += 1) {
const childrenFromPath = (parentNode as GridGroupNode).childrenFromPath;
const nodeId = childrenFromPath[Object.keys(childrenFromPath)[0]]?.[groupKeys[i]];
if (nodeId) {
parentNode = tree[nodeId];
}
}

const traverse = (node: GridGroupNode) => {
Comment on lines +229 to +240
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Why is this whole traverse necessary?

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@MBilalShafi MBilalShafi Jun 27, 2025 •
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It is to check if the children of the row being fetched are outdated and need to be removed before adding new ones.

Regarding the part where parent group's ID is derived from groupKeys: we could update the function signature to directly accept parent id. However, since the current approach isn’t expensive (by leveraging childrenFromPath), I chose not to modify the signature. What do you think about this approach vs changing the function signature (will be a non-breaking change as the function is private)?

if (!node) {
return;
}
for (const childId of node.children) {
if (!insertedNodes.has(childId)) {
removedNodes.add(childId);
if (tree[childId].type === 'group') {
traverse(tree[childId] as GridGroupNode);
}
}
}
};

if (parentNode !== rootNode) {
traverse(parentNode as GridGroupNode);
}
}

const cacheUpdates = nonPinnedRowsUpdates.concat(
Array.from(removedNodes).map((rowId) => ({
id: rowId,
_action: 'delete' as const,
})),
);

const cache = updateCacheWithNewRows({
updates: nonPinnedRowsUpdates,
updates: cacheUpdates,
getRowId: props.getRowId,
previousCache: apiRef.current.caches.rows,
groupKeys: groupKeys ?? [],
Expand Down