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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

Product type Paperback

Published in Jul 2017

Publisher

ISBN-13 9781788291187

Length 386 pages

Edition 2nd Edition

Languages

PHP

Tools

WordPress

Concepts

CMS

Author (1):

Lefebvre

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Table of Contents (20) Chapters

Title Page

Credits

About the Author

About the Reviewers

www.PacktPub.com

Customer Feedback

Dedication

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

Implementing the widget display function

For all of the widget creation work that we have done so far, our new creation does not display any content on the website yet. When displaying an area that contains widgets, WordPress tries to call a method named widget for each user-selected widget to output the desired content to the browser.

This recipe shows how to implement a widget method to display a list of recent book reviews when the widget is instantiated in a sidebar.

Getting ready

You should have already followed the Validating configuration options recipe to have a starting point for this recipe. Alternatively, you can get the resulting code (Chapter 10/ch10-book-review-widget/ch10-book-review-widget-v3.php) from the code bundle and rename the file as ch10-book-review-widget.php.

How to do it...

Navigate to the WordPress plugin directory of your development installation.
Navigate to the ch10-book-review-widget directory and edit ch10-book-review-widget.php.
Find the Book_Reviews class and...

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Authors (1)

Lefebvre

Lefebvre

Yannick Lefebvre is a plugin developer who has created multiple plugins on the official WordPress repository. His first creation, Link Library, is used on thousands of sites worldwide. With a background in computer science, he wrote his first plugin in 2004 and quickly started sharing his creations with the community. He is actively involved in the Montreal WordPress community, has presented multiple times at WordCamp Montreal, and offers custom plugin development services. By day, Yannick works for CM Labs Simulations, a company providing software tools and simulators for vehicles and heavy equipment.

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