One of the things that makes WordPress so extendable is its support for metadata on its core data object types (posts, comments, users, terms). The Metadata API and associated functions create a standardized way for retrieving and manipulating metadata for these object types. In this session, we will look at how metadata is stored, and which functions can be used to store and retrieve metadata.

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Common WordPress APIs:
Metadata API
Jonathan Bossenger
Learn.WordPress.org

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👋🏽 Welcome!
As you join, let everyone know in the chat where you’re
joining us from…
Hello!
○ My name is Jonathan Bossenger
○ From Cape Town, South Africa
○ Developer educator at Automattic
○ Sponsored to work with the Training Team
○ jonathanbossenger.com

3. Learn.WordPress.org
Metadata API
Jonathan Bossenger

4. Announcements
○ Welcome.
○ Please let me know if you can’t see this slide!
○ We are presenting in focus mode, but please feel free to enable your video.
○ You are welcome to ask questions.
○ You are welcome to post questions in the chat, or unmute to ask questions.

5. Announcements
○ Make sure your local install is ready
○ If I am going too fast, please let me know!
○ We will be posting this session to https://wordpress.tv/ afterwards.
○ For WordPress tutorials and courses please visit https://learn.wordpress.org/
○ For WordPress developer news and updates please visit
https://developer.wordpress.org/news/

6. Learning outcomes
○ The Metadata API
• What is the Metadata API and why it’s useful
• How to access metadata in the WordPress dashboard as Custom Fields
• Using the WordPress Metadata API to interact with metadata
• Using the metadata wrapper functions

7. Question time
○ On a scale of 1 to 5, how well do you know this topic?

8. Requirements
○ A local WordPress install
○ A text editor
○ Access to your local database
• https://wordpress.org/plugins/sql-buddy/
○ Some post data
• https://wordpress.org/plugins/fakerpress/
○ A “test bed” file
• https://gist.github.com/jonathanbossenger/d96520acd6225ea969f091752a3bca8b

9. Let’s go!

10. Resources
○ https://wordpress.org/plugins/sql-buddy/
○ https://wordpress.org/plugins/fakerpress/
○ https://gist.github.com/jonathanbossenger/d96520acd6225ea969f091752a3bca8b
○ https://developer.wordpress.org/apis/metadata/
○ https://developer.wordpress.org/plugins/metadata/custom-meta-boxes/
○ https://developer.wordpress.org/reference/