Creating a custom block that stores post meta – WordPress Developer Blog
Learn how to create a custom dynamic block that saves information to custom post_meta and creates a one-to-one experience in both the block editor and on the front end. You will see an example of how to to use @wordpress/create-block package to scaffold a block.
Enable, Read, and Write Post Meta in WordPress Gutenberg
The WordPress block editor (a.k.a. Gutenberg) communicates with the database via the WordPress REST API. We can read and write post meta from within the Gutenberg editor after we enable the specific post meta field in the WordPress REST API.
Gutenberg Fields Middleware
gutenberg-fields-middleware - Register fields for Gutenberg blocks with less repetitive code
Gutenberg Custom Fields
Gutenberg Custom Fields allows you to control the content of the Gutenberg edit screen by creating pre-filled templates.