WordPress Plugin Development: Beginner's Guide

Book Image

WordPress Plugin Development: Beginner's Guide

Book Image

WordPress Plugin Development: Beginner's Guide

Overview of this book

If you can write WordPress plug-ins, you can make WordPress do just about anything. From making the site easier to administer, to adding the odd tweak or new feature, to completely changing the way your blog works, plug-ins are the method WordPress offers to customize and extend its functionality. This book will show you how to build all sorts of WordPress plug-ins: admin plug-ins, Widgets, plug-ins that alter your post output, present custom "views" of your blog, and more. WordPress Plug-in Development (Beginner's Guide) focuses on teaching you all aspects of modern WordPress development. The book uses real and published WordPress plug-ins and follows their creation from the idea to the finishing touches, in a series of carefully picked, easy-to-follow tutorials. You will discover how to use the WordPress API in all typical situations, from displaying output on the site in the beginning to turning WordPress into a CMS in the last chapter. In Chapters 2 to 7 you will develop six concrete plug-ins and conquer all aspects of WordPress development. Each new chapter and each new plug-in introduces different features of WordPress and how to put them to good use, allowing you to gradually advance your knowledge. This book is written as a guide to take your WordPress skills from the very beginning to the level where you are able to completely understand how WordPress works and how you can use it to your advantage.

WordPress Plugin Development

WordPress Plugin Development

Credits

About the Author

About the Author

About the Reviewer

About the Reviewer

Preface

Free Chapter

Preparing for WordPress Development

Preparing for WordPress Development

How will you benefit?

Challenges involved

Plugins developed in this book

Tools for the job

Social Bookmarking

Social Bookmarking

Plugging in your first plugin

Displaying a Digg button

WordPress plugin hooks

Adding a Digg button using JavaScript code

Styling the output

Live Blogroll

Starting up with the blogroll

jQuery JavaScript library

JavaScript and WordPress

Creating the pop-up with CSS

Demystifying Ajax

The Wall

The main concepts behind the Wall plugin

Creating a widget

Widget controls

Create a WordPress page from the code

Handling user input

Managing Ajax comment submit

Dynamically load comments

Snazzy Archives

Snazzy Archives

Using a class for plugin

Showing template output with shortcodes

Prepare archives

Apply styling and jQuery to archives

Creating plugin options page

Use plugin options

Caching the plugin output

Insights for WordPress

Insights for WordPress

Creating custom panels in the editor screen

Searching the posts

Interacting with tinyMCE

Using Flickr API

Creating a tinyMCE plugin

Post Types

Handling localization

Adding a post template

Handling file and image uploads

Using custom fields

Quick post a link

Tinkering with WordPress backend menus

Programming the Manage panel

Handling error messages

User roles and capabilities

Development Goodies

Development Goodies

Creating Localization files

Documentation and support

Code management and plugin repository

General plugin development guidelines

WordPress MU development

WordPress and GPL

Online resources

Index

Customer Reviews

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Creating a tinyMCE plugin

tinyMCE is such a big editor that supports plugins on its own.

We will create a tinyMCE button on the editor toolbar with assigned functionality.

In order to create a tinyMCE plugin, we need to follow the procedure as stated on the tinyMCE plugin documentation page (http://wiki.moxiecode.com/index.php/TinyMCE:Create_plugin/3.x) and also WordPress codex for implementing tinyMCE plugins within WordPress (http://codex.wordpress.org/TinyMCE_Custom_Buttons).

Time for action — Adding a button to tinyMCE

Let's start by adding WordPress related tinyMCE handling. Edit our class constructor and add:

add_action('admin_print_scripts-post-new.php', array(&$this, 'scripts_action'));
WordPress insightstinyMCE, button adding toadd_action('admin_print_scripts-page-new.php', array(&$this, 'scripts_action'));
// add tinyMCE handlig
add_action( 'init', array( &$this, 'add_tinymce' ));
}

This function will add the necessary filters to handle the plugin and the button...