How to Unselect/Deselect All Rows in a React AG Grid and Reload the Grid
Problem: When working with the powerful React AG Grid, you might find yourself needing to clear all selected rows or refresh the grid's data. While the grid offers robust selection features, the methods for deselection and refreshing can seem a bit obscure.
Solution: This article will provide a comprehensive guide on how to easily unselect all rows and reload your AG Grid in your React application.
Unselecting All Rows in Your AG Grid
There are two primary ways to deselect all rows in your AG Grid:
1. Using the Grid API:
import { useGridApiContext } from '@ag-grid-community/react';
const MyComponent = () => {
const api = useGridApiContext();
const handleDeselectAll = () => {
api.deselectAll();
};
return (
<div>
<button onClick={handleDeselectAll}>Deselect All</button>
<AgGridReact ... />
</div>
);
};
This code utilizes the useGridApiContext hook provided by the AG Grid React package to access the grid's API. The deselectAll() method directly clears all selected rows in your grid.
2. Using the rowSelection property:
import { AgGridReact } from '@ag-grid-community/react';
const MyComponent = () => {
const handleDeselectAll = () => {
// Reset the selection by setting the rowSelection property to 'multiple'
// This is a simple way to reset the selection without using the grid API
gridOptions.rowSelection = 'multiple';
};
const gridOptions = {
rowSelection: 'multiple', // Allow multiple row selection
// ...other grid options
};
return (
<div>
<button onClick={handleDeselectAll}>Deselect All</button>
<AgGridReact rowSelection={gridOptions.rowSelection} ... />
</div>
);
};
This method relies on the rowSelection property of the AgGridReact component. By setting it back to 'multiple', you essentially reset the selection, effectively deselecting all rows.
Reloading Your AG Grid
To refresh the grid's data, you need to update the rowData property of the AgGridReact component. This can be achieved through:
1. Using a state variable:
import { useState } from 'react';
const MyComponent = () => {
const [rowData, setRowData] = useState([]);
const handleReloadGrid = () => {
// Fetch new data from your backend or data source
fetch('/api/data')
.then(response => response.json())
.then(newData => setRowData(newData));
};
return (
<div>
<button onClick={handleReloadGrid}>Reload Grid</button>
<AgGridReact rowData={rowData} ... />
</div>
);
};
This approach uses a state variable to store the grid data and update it with new data fetched from your data source. The grid will automatically re-render with the updated data.
2. Utilizing a custom onGridReady callback:
import { useGridApiContext } from '@ag-grid-community/react';
const MyComponent = () => {
const api = useGridApiContext();
const handleReloadGrid = () => {
// Fetch new data from your backend or data source
fetch('/api/data')
.then(response => response.json())
.then(newData => {
api.setRowData(newData);
});
};
return (
<div>
<button onClick={handleReloadGrid}>Reload Grid</button>
<AgGridReact
onGridReady={params => {
// Store a reference to the API for later use
api.setGridReady(params.api);
}}
...
/>
</div>
);
};
In this method, you store a reference to the grid API in the onGridReady callback, allowing you to directly update the rowData using the api.setRowData() function.
Key Considerations
- Performance: When working with large datasets, avoid unnecessary re-renders of the grid. Consider utilizing techniques like virtualization to improve performance.
- Data Management: Employ a robust data management strategy to keep your data consistent and accurate when updating the grid.
- User Experience: Provide clear visual feedback to the user during data loading and grid refreshing operations.
Conclusion
By applying these strategies, you can easily unselect all rows and reload your AG Grid in a React application. Choose the method that best suits your project's specific requirements and code structure. For further optimization, consider exploring the advanced features offered by AG Grid, including data virtualization, row grouping, and master-detail relationships.
References:
