Скачать или смотреть How to Update Text Field Values in PrestaShop Module Configuration Screen with a Button Click

Learn how to seamlessly update text field values in your PrestaShop module’s configuration screen upon clicking a button. Improve user experience by eliminating unnecessary page reloads.
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This video is based on the question https://stackoverflow.com/q/75120363/ asked by the user 'raposo' ( https://stackoverflow.com/u/19838387/ ) and on the answer https://stackoverflow.com/a/75124907/ provided by the user 'Krystian Podemski' ( https://stackoverflow.com/u/2895156/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Updating Text Field Values in PrestaShop Module Configuration Screen

As a PrestaShop developer, you may encounter scenarios where you want to update values on your module’s configuration screen dynamically. In this guide, we’ll explore a common requirement: updating a text field value on the configuration screen of a module immediately after clicking the "Save settings" button, without having to refresh the page or navigate away. This not only enhances user experience but also streamlines the management process.

Understanding the Problem

Imagine you've created a module that calculates VAT (Value Added Tax) between two specific dates. After configuring the settings and saving them, you'd naturally expect to see the calculated VAT displayed on the same configuration page. However, you currently have to exit and re-enter the module configuration to view the updated VAT value.

To address this issue, we need to modify the functionality of the postProcess() method in your module design.

Solution Overview

The solution involves two key steps:

Update the Configuration Value – Ensure that the VAT value is being saved correctly when the settings are submitted.

Redirect the User – After saving the settings, redirect the user back to the configuration page so they can see the updated VAT value without needing a manual refresh.

Step 1: Update the Configuration Value

In the postProcess() method, you are already updating the VAT value using:

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

This line is crucial as it ensures that the VAT calculation gets stored in the configuration.

Step 2: Redirect the User

To redirect the user back to the module configuration page after saving, you will modify the postProcess() method as follows:

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

This redirection ensures users remain on the same page and can see the updated VAT value immediately after saving their settings.

Finalizing the Changes

Here's how you can implement the full postProcess() method with the redirection:

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

Conclusion

By following the steps outlined, you will enhance your PrestaShop module’s configuration screen, allowing users to view updated values seamlessly after making changes. This approach not only improves functionality but also contributes to a better user experience.

Implement these changes and enjoy a more efficient module configuration process!