Скачать или смотреть Solving Popup LOV Multi-Select Issues in Oracle APEX Inline Dialogue

Discover how to fix the `Popup LOV` multi-select field's sizing issues in Oracle APEX Inline Dialogue with a simple JavaScript solution.
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Fixing Popup LOV Multi-Select Issues in Oracle APEX Inline Dialogue

When working with Oracle APEX, we often encounter challenges that can be perplexing and time-consuming. One common problem is the behavior of the Popup LOV (List of Values) when set to multi-select, especially within an Inline Dialogue. This post discusses a specific issue where the input field becomes virtually unusable due to sizing problems, along with the straightforward fix that can solve it.

The Problem

In a recent development using APEX 19.2, I implemented an Inline Dialogue region that included a Popup LOV as a page item. My requirements included the ability to select multiple values and allow users to manually add more options as needed. However, after enabling the multi-select feature, I encountered a frustrating problem:

The input field for the Popup LOV contracted to an unmanageable size—specifically, a max-width of just 4 pixels.

Even after switching the item to use the Stretch Form Item option, I faced another obstacle: manual text entry became awkward. Users could only click within the tiny 4px area, and the text they typed wasn’t visible until they clicked away from the field.

This presented a significant usability issue that needed a quick resolution.

The Solution

Through troubleshooting, I discovered two key elements regarding the display properties of the input field:

Without Stretch Form Item: The max-width remained at 4 pixels regardless of other settings.

With Stretch Form Item: The flex-grow property was set to 0, which prevented the field from expanding properly.

To resolve this, I implemented a simple JavaScript command to allow the field to grow adequately. Here’s how you can do it:

Step-by-Step Guide

Access Your APEX Application: Open your application in Oracle APEX where you need to apply the fix.

Locate the Inline Dialogue and the Popup LOV Item: Navigate to the region where the Popup LOV is used.

Add Custom JavaScript: Insert the following simple piece of JavaScript code into the page where the Inline Dialogue is initialized.

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

Save and Run Your Application: After adding the code, save your changes and run the application to test the adjustments.

Results

By applying this small snippet, the Popup LOV multi-select field should now expand properly, allowing users to see what they are typing and interact with the input field without restrictions.

Additional Considerations

This solution was tested on APEX version 19.2. If you are using a different version, check for any updates or changes in behavior that may affect this solution. Upgrading to newer versions may provide additional fixes or feature improvements.

Always back up your application and test changes in a controlled environment before deploying to production.

Conclusion

User interface challenges like the one discussed can be frustrating, but it's essential to remember that many issues can often be solved with simple solutions. If you find yourself dealing with the Popup LOV multi-select size problems in Oracle APEX, the above methods can help enhance usability for your application users. Use this guide to create a more responsive and user-friendly experience.

If you found this post helpful, feel free to share it with others facing similar challenges!