Understanding Hooks and Developing Plugins for WordPress

The Atlanta WordPress Coder's Guild

• Presenters: @mikeschinkel / @wpscholar
• Twitter: @thecodersguild
• Hashtag: #wppluginsandhooks

##Outline 0. Intro - What is a Plugin? - What is a Hook? - Compare Plugins vs. Themes vs. Core

1. Minimum Viable Plugin
   • The Plugin Directory
   • echo <font color="red" size="7">Hello World!</font>
   • Activation
2. Simple Plugin
   • Using 'the_content' hook
   • Print Copyright Notice on every post
3. The Must-Use Plugin Directory
   • The plugin-loader.php
4. Using Classes for Plugins
   • The EventPress_Redux class
5. Add Post Types
   • Event
   • Venue
   • Registration
6. Data Entry Fields
   • Start, End, Venue
   • Use edit_form_after_title hook
     • Instead of a Metabox - we'll show the hooks for that too
7. Enqueue Scripts and CSS
   • Enqueue select2.js, select2.css for Venue
   • Add in Footer
8. Register for an Event
   • Using WP-AJAX and
   • Registration post type.

##Repository

• The Plugin Repository on GitHub

##References

• Codex Plugins API/Actions Reference
• Hooks Reference
• Plugin File Header Fields