Скачать или смотреть How to Set Selected Rows in ag-grid-react

Learn how to effectively set selected rows in ag-grid-react using grid API, with step-by-step instructions and examples.
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How to Set Selected Rows in ag-grid-react: A Comprehensive Guide

Ag-grid-react is a powerful tool that simplifies the process of rendering grids in your React applications. However, you might encounter certain challenges while working with this library, especially when it comes to selecting rows programmatically. In this guide, we'll explore how to set selected rows within your ag-grid-react implementation.

Understanding the Problem

While working with ag-grid-react, users often find it easy to retrieve the selected rows using the getSelectedRows() method provided by the gridApi. However, the challenge arises when one wants to set selected rows dynamically based on certain conditions.

You may ask:

How can I programmatically select specific rows in my ag-grid?

What methods does ag-grid provide for selecting rows?

Let’s dive into the solution.

Solution: Selecting Rows Programmatically

To effectively set selected rows in your ag-grid-react, you can make use of the gridApi methods, specifically the forEachNode function and the setSelected method. This approach allows you to iterate over each row node and set the selection state based on your condition.

Here’s a step-by-step guide to achieve this:

1. Using forEachNode

The forEachNode method enables you to access each row node present in the grid. You can then apply custom logic to decide which rows to select.

Example Code

Here’s a sample implementation:

[[See Video to Reveal this Text or Code Snippet]]

2. Parameters of setSelected

newValue (boolean): Determines whether to select or deselect the row.

clearSelection (boolean): If set to true, clears all previously selected rows before setting the new selection. You can set it to false to maintain existing selections.

3. Additional Challenge: Rerendering Rows

While you may successfully select your rows, you might encounter another issue when updating the data of the selected row. Specifically, when using agRichSelectCellEditor, changing the rowNode.data might not trigger a re-render of the row.

To fix this:

Re-render manually: After updating the data, you may need to call a re-render method explicitly to update the displayed values.

Conclusion

Selecting specific rows in ag-grid-react is a straightforward process when you utilize the methods provided by the gridApi. By using forEachNode combined with setSelected, you can selectively manage your row selections easily. Just be mindful of the potential re-rendering issue when changing row data and plan accordingly to ensure your UI remains in sync with the underlying data model.

Implementing these techniques will ensure a smooth user experience in your grid-based UI applications. Feel free to reach out if you have further questions or encounter issues while working with ag-grid-react.