Скачать или смотреть Solving the ExtJS ActionColumn Icon Visibility Issue in Grid Panels

Discover how to effectively hide and unhide `actioncolumn` icons in an `ExtJS` grid panel based on row data. Learn the proper implementation techniques and troubleshooting steps.
---
This video is based on the question https://stackoverflow.com/q/70206228/ asked by the user 'Ash' ( https://stackoverflow.com/u/15370435/ ) and on the answer https://stackoverflow.com/a/70208132/ provided by the user 'Arthur Rubens' ( https://stackoverflow.com/u/10196301/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Extjs - Not able to hide/unhide actioncolumn icon in specific rows in Grid panel

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the Problem

When working with ExtJS, particularly with grid panels, developers may encounter situations in which they need to dynamically hide or unhide icons in an action column based on specific criteria from the row data.

In this post, we will explore the issue of not being able to show or hide an action column icon effectively—an issue faced by many developers while using ExtJS.

The problem boils down to the implementation of a getClass function in the action column that does not seem to work as expected, leaving the icon in a permanent hidden state or visible when it shouldn't be.

Problem Example

Consider the following ExtJS grid panel configuration:

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

The Challenge

The icon in the action column should either display or hide based on the value of record.data.name. However, despite verifying that the condition is correct, developers find that the icon does not show up under the intended conditions.

Solution Overview

Step-by-Step Solution

To resolve the issue, let’s walk through some essential points and adjustments that can guide you to effectively manage icon visibility in the ExtJS grid panel.

Using the icon Property:

The current implementation uses getClass to determine visibility but may not produce desired results. Consider using the icon property directly within the item configuration. This is much clearer and can react to dynamic conditions without altering class properties.

Implementing CSS for Visibility:

Ensure you have the right CSS classes defined for showing and hiding the icons:

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

Add a class that truly hides the display:

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

Revising the ActionColumn Item Configuration:

Mark the item as hidden by expanding upon the getClass method logic.

Here’s a better structure:

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

Testing the Solution

Finally, make sure to test the implementation thoroughly:

Verify that your conditions are correct and reflected in the action column.

Confirm that the icons behave as intended across different row data scenarios.

Complete Working Sample

Here’s a full working example for your reference:

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

Conclusion

By following the outlined steps, you should be able to successfully implement conditional visibility for action column icons in your ExtJS grid panel. Remember to use the icon property for a cleaner configuration and ensure that your CSS classes are correctly applied.

Feel free to reach out in the comments if you have further questions or run into different issues!