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WordPress Plugin Development Cookbook

You're reading from   WordPress Plugin Development Cookbook Create powerful plugins to extend the world's most popular CMS

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Product type Paperback
Published in Jul 2017
Publisher
ISBN-13 9781788291187
Length 386 pages
Edition 2nd Edition
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Author (1):
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Yannick Lefebvre Yannick Lefebvre
Author Profile Icon Yannick Lefebvre
Yannick Lefebvre
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Toc

Table of Contents (13) Chapters Close

Preface 1. Preparing a Local Development Environment FREE CHAPTER 2. Plugin Framework Basics 3. User Settings and Administration Pages 4. The Power of Custom Post Types 5. Customizing Post and Page Editors 6. Accepting User Content Submissions 7. Customizing User Data 8. Creating Custom MySQL Database Tables 9. Leveraging JavaScript, jQuery, and AJAX Scripts 10. Adding New Widgets to the WordPress Library 11. Enabling Plugin Internationalization 12. Distributing Your Plugin on wordpress.org

Validating configuration options

The widget configuration panel that was put in place in the previous recipe was functional, allowing users to change options and save updated values in the website database. That being said, all WordPress does by default when the user saves a widget is store values directly to the site database. Since accepting user data blindly can lead to functionality problems and security risks if wrong or malicious values are entered, it is preferable to add data validation rules through the creation of an update method that will be able to verify configuration data before it is saved. This recipe shows how to implement a widget's update method.

Getting ready

You should have already followed the Displaying...

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