A new day, and refreshed Google-fu powers provided the simple answer: The level attribute needs to be an integer, not a a string. [ ‘core/heading’, [ ‘level’ => 3, ‘placeholder’ => ‘Subheading’, ‘className’ => ‘block-subheader-directions has-blue-alt-color’, ], ]
WordPress 5.1.1 uses React 16.6.3. You can see this in the package.json file in the development version of WordPress on Trac: https://core.trac.wordpress.org/browser/tags/5.1.1/package.json?rev=44861 This has already been updated in trunk to 16.8.4, so the next major version of WordPress will use at least that version.
According to the gutenberg handbook you can use the blocks.registerBlockType filter which allows you to play around with the block settings. For most of the wp core blocks modifying the supports.align property works pretty well: wp.hooks.addFilter( ‘blocks.registerBlockType’, ‘my-theme/namespace’, function( settings, name ) { if ( name === ‘core/pullquote’ ) { return lodash.assign( {}, settings, { … Read more
Add a custom HTML block immediately before and after the elements you’d like to hyperlink as a unit, using the respective opening and closing tags. No need for a group block.
The attribute in question should have the type of “string” so that it would be rendered properly. attributes: { description: { type: “string”, } }
Gutenberg extending the existing class
The error which is shown by WordPress graphically is not the same output that you actually get from the block. Open up the browser’s console, and you will see the actual expected and outcome. Do a quick diff between the two outputs and you should be able to find your mismatch. The break tags and … Read more
Gutenberg Block Toolbar – remove button
Block editor fails to update HTML section when the word “from” is in source code
Clipboard processing in Gutenburg