React Tree Grid Cell Editing

    The Ignite UI for React Cell Editing in React Tree Grid provides a great data manipulation capability of the content of individual cells within the React Tree Grid component and comes with powerful API for React CRUD operations. It is a fundamental feature in apps like spreadsheets, data tables, and data grids, allowing users to add, edit, or update data within specific cells. By default, the Grid in Ignite UI for React is used in cell editing. And due to the default cell editing template, there will be different editors based on the column data type Top of Form.

    In addition, you can define your own custom templates for update-data actions and to override the default behavior for committing and discarding any changes.

    React Tree Grid Cell Editing and Edit Templates Example

    EXAMPLE
    DATA
    TSX
    CSS
    Edit in:

    Like this sample? Get access to our complete Ignite UI for React toolkit and start building your own apps in minutes. Download it for free.

    Cell Editing

    Editing through UI

    You can enter edit mode for specific cell, when an editable cell is focused in one of the following ways:

    • on double click;
    • on single click - Single click will enter edit mode only if the previously selected cell was in edit mode and currently selected cell is editable. If the previously selected cell was not in edit mode, single click will select the cell without entering edit mode;
    • on key press Enter;
    • on key press F2;

    You can exit edit mode without committing the changes in one of the following ways:

    • on key press Escape;
    • when you perform sorting, filtering, searching and hiding operations;

    You can exit edit mode and commit the changes in one of the following ways:

    • on key press Enter;
    • on key press F2;
    • on key press Tab;
    • on single click to another cell - when you click on another cell in the IgrTreeGrid, your changes will be submitted.
    • operations like paging, resize, pin or move will exit edit mode and changes will be submitted.

    The cell remains in edit mode when you scroll vertically or horizontally or click outside the IgrTreeGrid. This is valid for both cell editing and row editing.

    Editing through API

    You can also modify the cell value through the IgrTreeGrid API but only if primary key is defined:

    public updateCell() {
    this.treeGrid.updateCell(newValue, rowID, 'Age');
}
typescript

    Another way to update cell is directly through Update method of Cell:

    public updateCell() {
    const cell = this.treeGrid.getCellByColumn(rowIndex, 'Age');
    // You can also get cell by rowID if primary key is defined
    // const cell = this.treeGrid.getCellByKey(rowID, 'Age');
    cell.update(9999);
}
typescript

    Cell Editing Templates

    You can see and learn more for default cell editing templates in the general editing topic.

    If you want to provide a custom template which will be applied to a cell, you can pass such template either to the cell itself, or to its header. First create the column as you usually would:

    <IgrColumn
    field="race"
    header="Race"
    dataType="String"
    editable="true"
    name="column1"
    id="column1">
</IgrColumn>
tsx

    and pass the templates to this column in the index.ts file:

    public webGridCellEditCellTemplate = (e: { dataContext: IgrCellTemplateContext; }) => {
    let cellValues: any = [];
    let uniqueValues: any = [];
    const cell = e.dataContext.cell;
    const colIndex = cell.id.columnID;
    const field: string = this.grid1.getColumnByVisibleIndex(colIndex).field;
    const key = field + "_" + cell.id.rowID;
    let index = 0;
    for (const i of this.roleplayDataStats as any) {
      if (uniqueValues.indexOf(i[field]) === -1) {
        cellValues.push(
          <>
            <IgrSelectItem
              selected={e.dataContext.cell.value == i[field]}
              value={i[field]}
              key={key + "_" + index}
            >
              <div key={key + "_" + index}>{i[field]}</div>
            </IgrSelectItem>
          </>
        );
        uniqueValues.push(i[field]);
      }
      index++;
    }
    return (
      <>
        <IgrSelect
          key={key}
          change={(x: any) => {
            setTimeout(() => {
              cell.editValue = x.value;
            });
          }}
        >
          {cellValues}
        </IgrSelect>
      </>
    );
  };
typescript

    Working sample of the above can be found here for further reference:

    EXAMPLE
    DATA
    TSX
    CSS
    Edit in:

    Ignite UI for React | CTA Banner

    CRUD operations

    Please keep in mind that when you perform some CRUD operation all of the applied pipes like filtering, sorting and grouping will be re-applied and your view will be automatically updated.

    The IgrTreeGrid provides a straightforward API for basic CRUD operations.

    Adding a new record

    The IgrTreeGrid component exposes the addRow method which will add the provided data to the data source itself.

    public addNewChildRow() {
    // Adding a new record
    // Assuming we have a `getNewRecord` method returning the new row data
    // And specifying the parentRowID.
    const record = this.getNewRecord();
    this.treeGrid.addRow(record, 1);
}
typescript

    Updating data in the Tree Grid

    Updating data in the Tree Grid is achieved through updateRow and updateCell methods but only if the PrimaryKey for the grid is defined. You can also directly update a cell and/or a row value through their respective update methods.

    // Updating the whole row
this.treeGrid.updateRow(newData, this.selectedCell.cellID.rowID);

// Just a particular cell through the Tree Grid API
this.treeGrid.updateCell(newData, this.selectedCell.cellID.rowID, this.selectedCell.column.field);

// Directly using the cell `update` method
this.selectedCell.update(newData);

// Directly using the row `update` method
const row = this.treeGrid.getRowByKey(rowID);
row.update(newData);
typescript

    Deleting data from the Tree Grid

    Please keep in mind that deleteRow method will remove the specified row only if a primaryKey is defined.

    // Delete row through Tree Grid API
this.treeGrid.deleteRow(this.selectedCell.cellID.rowID);
// Delete row through row object
const row = this.treeGrid.getRowByIndex(rowIndex);
row.delete();
typescript

    Cell Validation on Edit Event

    Using the IgrTreeGrid's editing events, we can alter how the user interacts with the IgrTreeGrid.

    In this example, we'll validate a cell based on the data entered in it by binding to the CellEdit event. If the new value of the cell does not meet our predefined criteria, we'll prevent it from reaching the data source by cancelling the event.

    The first thing we need to do is bind to the grid's event:

    <IgrTreeGrid cellEdit={handleCellEdit}>
</IgrTreeGrid>
tsx

    The CellEdit emits whenever any cell's value is about to be committed. In our CellEdit definition, we need to make sure that we check for our specific column before taking any action:

    If the value entered in a cell under the Age column is below 18 or the value in the HireDate column is in the future, the editing will be cancelled and the user will be alerted to the cancellation.

    The result of the above validation being applied to our IgrTreeGrid can be seen in the below demo:

    EXAMPLE
    DATA
    TSX
    CSS
    Edit in:

    Styling

    In addition to the predefined themes, the grid could be further customized by setting some of the available CSS properties. In case you would like to change some of the colors, you need to set a class for the grid first:

    <IgrTreeGrid className="treeGrid"></IgrTreeGrid>
tsx

    Then set the related CSS properties for that class:

    .treeGrid {
    --ig-grid-edit-mode-color: orange;
    --ig-grid-cell-editing-background: lightblue;
}
css

    Styling Example

    EXAMPLE
    DATA
    TSX
    CSS
    Edit in:

    API References

    Additional Resources