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[test] Test the validation before saving a value #2087

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merged 6 commits into from
Jul 13, 2021

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@m4theushw m4theushw commented Jul 6, 2021

I just noticed that when calling commitCellChange we're not checking if there's an error. This could cause the invalid value being commited when it shouldn't. This situation may occur with custom edit components.

@m4theushw m4theushw added component: data grid This is the name of the generic UI component, not the React module! test labels Jul 6, 2021
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Should GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED fire if there is an error or not? The name of the event is weird. It says committed even if it wasn't yet or might not be.

packages/grid/x-grid/src/tests/editRows.XGrid.test.tsx Outdated Show resolved Hide resolved
@m4theushw m4theushw force-pushed the cell-editing-validation branch from 70cadf6 to ed7d333 Compare July 7, 2021 14:21
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m4theushw commented Jul 7, 2021

Should GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED fire if there is an error or not? The name of the event is weird. It says committed even if it wasn't yet or might not be.

@oliviertassinari True, GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED shouldn't be fired. I pushed one more commit fixing this and also allowing developers to stop the propagation of this event and GRID_CELL_EDIT_PROPS_CHANGE .

In #1955 I changed all edit components to call the API directly, but by doing that the events would not be published and developers couldn't stop the propagation. It also broke https://master--material-ui-x.netlify.app/storybook/?path=/story/x-grid-tests-rows--validate-edit-value-server-side&globals=measureEnabled:false. To fix this, I updated commitCellChange and setEditCellProps and introduced another changeCellEditProps method. The purpose of each one is as following:

  • changeCellEditProps a syntactic sugar to publish GRID_CELL_EDIT_PROPS_CHANGE
  • setEditCellProps updates the edit props, subscribes to the GRID_CELL_EDIT_PROPS_CHANGE
  • commitCellChange checks if there's an error and, if it doesn't, then publishes GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED. The commit logic was moved to a handler that subscribes to this event, so developers can stop it.

We can open another PR to rename GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED and the prop to follow our convention. I was thinking about GRID_CELL_EDIT_COMMIT, because we only commit the value, not all props. What do you think? There's also an inconsistency surrounding EDIT_CELL and CELL_EDIT.

@m4theushw m4theushw requested a review from a team July 7, 2021 14:40
@m4theushw m4theushw force-pushed the cell-editing-validation branch from 572dd69 to b356a75 Compare July 7, 2021 18:23
@m4theushw m4theushw mentioned this pull request Jul 7, 2021
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@@ -137,14 +130,15 @@ export function useGridEditRows(apiRef: GridApiRef) {
[options.isCellEditable],
);

const setEditCellProps = React.useCallback(
const changeCellEditProps = React.useCallback(
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setEditCellProps, changeCellEditProps => pretty confusing

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Yeah, the names are a bit weird, we can discuss. Before #1824, some components were directly publishing GRID_CELL_EDIT_PROPS_CHANGE, but that is not good because TypeScript can't suggested the arguments. This new method is just a helper to publish the event. The actual logic of updating the state is in setEditCellProps. I can't just call setEditCellProps because the prop won't be called.

@@ -25,7 +25,7 @@ export function GridEditInputCell(props: GridCellParams & InputBaseProps) {
const newValue = event.target.value;
const editProps = { value: newValue };
setValueState(newValue);
api.setEditCellProps({ id, field, props: editProps });
api.changeCellEditProps({ id, field, props: editProps }, event);
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I don't get the purpose of this new method


const cellCommitParams = apiRef.current.getEditCellPropsParams(params.id, params.field);
if (!cellCommitParams.props.error) {
// We commit the change when there is no error
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how are you handling this now? error was a sort of predefined prop

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commitCellChange now checks if there's an error. If there's no error, it publishes GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED. The handler of this event is who updates the row.

@@ -168,6 +163,16 @@ export function useGridEditRows(apiRef: GridApiRef) {
[apiRef, forceUpdate, logger, setGridState],
);

const handleCellEditPropsChange = React.useCallback(
(params: GridEditCellPropsParams, event?: React.SyntheticEvent) => {
if (event?.isPropagationStopped()) {
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Is that not handled in the publishEvent?

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No, publishEvent prevents from publishing an event if the given event object has the propagation stopped. Once the event is published, it will call all the listeners. If the user wants to stop the propagation of an event in onEditCellChange, we need to check by hand if the propagation was stopped.

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Yes so one way to do it, is to override the emit behavior of the event emitter so we avoid this check everywhere 🤔

@@ -333,10 +355,11 @@ export function useGridEditRows(apiRef: GridApiRef) {
getCellMode,
isCellEditable,
commitCellChange,
setEditCellProps,
setEditCellProps, // TODO don't expose, update the editRowsModel prop directly
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why this comment?

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To reduce confusion between setEditCellValue. In edit components, the current value is only thing that needs to be updated in the majority of the cases. Outside an edit components, developers can control the state with the editRowsModel prop to set the error or other prop.

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@dtassone We discussed to create another GRID_CELL_EDIT_VALUE_CHANGE event that would be fired by setEditCellValue. I chose to not do it here because GRID_CELL_EDIT_PROPS_CHANGE has only one listener, so it's already this new event. Also, this PR was created just to improve the error validation and to fix a regression. We can go back to it in the useGridControlState's PR.

About the TODO to not expose setEditCellProps, my rationale is that we have two situations where developers might want to update the value and, since they are similar, the name for the methods would cause confusion. The situations are: 1. update the value inside the edit component and 2. update the value/error outside the edit component. For 1. there's setEditCellValue which updates the state and also calls the onEditCellChange prop, so the developer can hook to it a different behavior. In 2. the developer doesn't need the prop to be called, it can directly update the model through the prop. A method for 2. would just be a helper to update the state for a specific id and field.

@m4theushw m4theushw merged commit a4df486 into mui:master Jul 13, 2021
@m4theushw m4theushw deleted the cell-editing-validation branch July 13, 2021 19:16
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oliviertassinari commented Jul 14, 2021

True, GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED shouldn't be fired.

@m4theushw To me it wasn't obvious. In the documentation we use the event to listen to the action that signals that the end-user is done (enter, click away, etc.), we even suggest that validation should be done after. From what I understand we have no documentation for using error: true in the editRowsModel. Do we even need it? How about we remove this feature, waiting for a strong use case to come up?

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m4theushw commented Jul 15, 2021

In the documentation we use the event to listen to the action that signals that the end-user is done (enter, click away, etc.), we even suggest that validation should be done after.

@oliviertassinari That's wrong. Although we say to do the validation after, the demo is doing the validation before, while the user is changing the value. Note that we use the onEditCellChange prop.

From what I understand we have no documentation for using error: true in the editRowsModel. Do we even need it?

Now we have documentation about error: true in #2143. I updated the editing docs to better reflect what we do in the demos: https://deploy-preview-2143--material-ui-x.netlify.app/components/data-grid/editing/#client-side-validation

How about we remove this feature, waiting for a strong use case to come up?

Based on the new docs what do you think we can remove? The GRID_CELL_EDIT_COMMIT (previously named GRID_CELL_EDIT_PROPS_CHANGE_COMMITTED) can be used if the developer wants to send to the server BEFORE updating the row, like to do additional validation in the server.

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oliviertassinari commented Jul 17, 2021

@m4theushw I didn't saw #2143 when I commented. We are good

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