',
esc_attr( $class ),
$list_items_markup
);
}
/**
* Registers the `core/latest-posts` block on server.
*/
function register_block_core_latest_posts() {
register_block_type_from_metadata(
__DIR__ . '/latest-posts',
array(
'render_callback' => 'render_block_core_latest_posts',
)
);
}
add_action( 'init', 'register_block_core_latest_posts' );
/**
* Handles outdated versions of the `core/latest-posts` block by converting
* attribute `categories` from a numeric string to an array with key `id`.
*
* This is done to accommodate the changes introduced in #20781 that sought to
* add support for multiple categories to the block. However, given that this
* block is dynamic, the usual provisions for block migration are insufficient,
* as they only act when a block is loaded in the editor.
*
* TODO: Remove when and if the bottom client-side deprecation for this block
* is removed.
*
* @param array $block A single parsed block object.
*
* @return array The migrated block object.
*/
function block_core_latest_posts_migrate_categories( $block ) {
if (
'core/latest-posts' === $block['blockName'] &&
! empty( $block['attrs']['categories'] ) &&
is_string( $block['attrs']['categories'] )
) {
$block['attrs']['categories'] = array(
array( 'id' => absint( $block['attrs']['categories'] ) ),
);
}
return $block;
}
add_filter( 'render_block_data', 'block_core_latest_posts_migrate_categories' );