Skip to content

Update cascading combos topic for React 19 #1505

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: vnext
Choose a base branch
from
Open

Update cascading combos topic for React 19 #1505

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 8 additions & 10 deletions doc/en/components/grids/_shared/cascading-combos.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,8 +50,7 @@ builder.Services.AddIgniteUIBlazor(
```

```tsx
import { IgrComboModule, IgrCombo } from 'igniteui-react';
IgrComboModule.register();
import { IgrCombo } from 'igniteui-react';
```

Then you should define the column template with the combo:
Expand All @@ -61,22 +60,21 @@ Then you should define the column template with the combo:
<IgrColumn
field="Country"
header="Country"
bodyTemplate={webGridCountryDropDownTemplate}
name="column1">
bodyTemplate={webGridCountryDropDownTemplate}>
</IgrColumn>
```

```tsx
function webGridCountryDropDownTemplate(props: {dataContext: IgrCellTemplateContext}) => {
var cell = props.dataContext.cell as any;
const webGridCountryDropDownTemplate = (ctx: IgrCellTemplateContext) => {
var cell = ctx.cell as any;
if (cell === undefined) {
return <></>;
}
const id = cell.id.rowID;
const comboId = "country" + id;
return (
<>
<IgrCombo data={countries} ref={comboRefs} change={(x: any, args: any) => {onCountryChange(id, x, args) }} placeholder="Choose Country..." valueKey="Country" displayKey="Country" singleSelect="true" name={comboId}></IgrCombo>
<IgrCombo data={countries} ref={comboRefs} onChange={(event: CustomEvent) => { onCountryChange(id, event) }} placeholder="Choose Country..." valueKey="Country" displayKey="Country" singleSelect="true" name={comboId}></IgrCombo>
</>
);
}
Expand Down Expand Up @@ -105,7 +103,7 @@ public webGridCountryDropDownTemplate: IgcRenderFunction<IgcCellTemplateContext>

- `displayKey` - Required for object arrays - Specifies which property will be used for the items' text. If no value is specified for `displayKey`, the combo will use the specified `valueKey` (if any).

In order to handle the selection change, we need the `change` event. The emitted event arguments contain information about the selection prior to the change, the current selection and the items that were added or removed. Therefore, it will filter the values based on the selection of the previous combo.
In order to handle the selection change, we need the `onChange` event. The emitted event arguments contain information about the selection prior to the change, the current selection and the items that were added or removed. Therefore, it will filter the values based on the selection of the previous combo.

```razor
//In Javascript
Expand Down Expand Up @@ -163,10 +161,10 @@ public bindEventsCountryCombo(rowId: any, cell: any) {
```

```tsx
function onCountryChange(rowId: string, cmp: any, args:any) {
const onCountryChange = (rowId: string, event: CustomEvent) => {
const regionCombo = comboRefCollection.get("region_" + rowId);
setTimeout(() => {
const newValue = cmp.value[0];
const newValue = event.detail.newValue[0];
if (newValue === undefined) {
regionCombo.deselect(regionCombo.value);
regionCombo.disabled = true;
Expand Down