Writing Your Own WordPress Plugins - WordCamp Kansas City, 2014
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This document provides a comprehensive guide on writing WordPress plugins, detailing the essential files and structures, including the plugin header and API hooks (action and filter). It includes examples of plugins for inspiration and highlights features to consider during development, such as backwards compatibility and distribution methods. The author encourages developers to think creatively and outline their features before launching their plugins.
Writing Your Own WordPress Plugins - WordCamp Kansas City, 2014
- 1. Writing Your Own Plugins The basics and more Pippin Williamson pippinsplugins.com @pippinsplugins
- 2. What makes up a plugin? wp-content/plugins/my-plugin-name/ .php files .js files .css files .mo/po files image files
- 3. What defines a plugin?
- 4. The plugin header wp-content/plugins/my-plugin/my-plugin.php <?php /** * Plugin Name: My Plugin Name * Description: A simple plugin * Version: 1.0 * Author: Pippin Williamson * Author URI: http://pippinsplugins.com */
- 5. The plugin header plugins/simple-post-expiration/simple-post-expiration.php <?php /** * Plugin Name: Simple Post Expiration * Description: A simple post expiration plugin * Version: 1.0 * Author: Pippin Williamson * Author URI: http://pippinsplugins.com */
- 8. The plugin API Action hooks: do_action() add_action() remove_action() remove_all_actions() has_action() did_action() doing_action
- 9. Quick demo time wp_footer action https://github.com/WordPress/WordPress/blob/master/w p-includes/general-template.php#L2051
- 10. The plugin API Filter hooks: apply_filters() add_filter() remove_filter() remove_all_filters() has_filter() current_filter() doing_filter()
- 11. Quick demo time the_title filter https://github.com/WordPress/WordPress/blob/master/w p-includes/post-template.php#L99
- 12. Plugins for Inspiration There are so many possibilities
- 13. Inspiring Dashboard Not sure what to write about for your next blog post? Maybe this Dashboard Widget can inspire you. Adds a dashboard widget Provides quick inspiration on something to write http://wordpress.org/plugins/inspiring-dashboards/
- 14. Multi Site Plugins Add New Enables the “Add New” menu under Plugins for multisite The Add New Plugin screen is hard to get to This plugin adds a shortcut http://wordpress.org/plugins/multi-site-plugins-add-new/
- 15. CodePen oEmbed Adds oEmbed support for CodePen.io The Add New Plugin screen is hard to get to This plugin adds a shortcut http://wordpress.org/plugins/codepen-oembed/
- 16. Remove Comment Notes Removes the notes section below the comment form The notes section can create clutter It isn’t needed in the majority of cases http://wordpress.org/plugins/remove-comment-notes/
- 17. Write First Blogging is about writing Sends users directly to the edit screen upon login http://wordpress.org/plugins/write-first/
- 18. Simple Post Expiration A simple plugin to add an expiration date to posts adds an “Expires on” field to post editor prepends “Expired” to post titles once expired is really simple https://github.com/pippinsplugins/simple-post-expiration
- 19. Items to keep in mind
- 20. Overall structure of the plugin
- 21. How the data is stored
- 24. Updates
- 26. How the plugin will be distributed
- 27. When will you get started?