wp-block-development

WordPress blocks become invalid after block.json updates because existing saved content lacks the new attribute serialization schema. You must implement block deprecations and migration paths to safely evolve content and prevent invalid block errors.

To add dynamic rendering to a Gutenberg block, implement a render.php file or render_callback pattern within your block.json configuration. This shifts the block from static HTML saving to server-side rendering for consistent editor and frontend behavior.

You need to migrate your WordPress block to apiVersion 3 when updating block.json metadata to ensure compatibility with current Gutenberg editor standards. This requires updating attribute serialization patterns and verifying registration approaches to prevent rendering failures.

Fixing WordPress block attributes that do not persist after saving requires correcting the attribute serialization pattern in block.json. You must align the save function with the schema and verify the block model selection to ensure data retention.

Yes, you can use wp-env and @wordpress/scripts to build and test block deprecations. Aligning your development workflow with these tools allows you to verify deprecated versions and migration paths against editor and frontend rendering failures.

Choosing between static and dynamic rendering for a Gutenberg block depends on whether content changes independently of the database. Use render.php for dynamic server-side output, or standard save functions for static HTML, ensuring correct block.json registration.