Metadata API
Metadata is the information associated with posts, terms, comments, and users. WordPress provides metadata API to manage metadata.
Watch Metabox example here
Read more on the following topics in Metadata handbook pages.
- Managing Post Metadata
- Custom Meta Boxes
- Rendering Post Metadata
Coding Exercise
Examine the add_meta_box() function documentation, and create a meta box with the following requirements:
- Metabox should only be displayed in the “post” CPT.
- Metabox should display the post featured image ID.
References
Ideas to Explore:
- What is ‘Post Meta Data’? What fields can access from that?
- What’s the difference between add_post_meta and update_post_meta?
Should metadata be used for querying posts? - How does the Metadata API differ from other APIs like REST or SOAP?
- How does Metadata API handle metadata dependencies, and what happens when a dependent component is missing during deployment?
- What are the serialization formats (e.g., XML, JSON) used by Metadata API, and why are they important?
- What are the key components of Metadata API (e.g., metadata types, components, etc.)
- How can Metadata API be used for deploying customizations in an application?