WP_Block_Metadata_Registry::default_identifier_callback │ private static │ WP 6.7.0

Default identifier function to determine the block identifier from a given path.

This function extracts the block identifier from the path:

• For 'block.json' files, it uses the parent directory name.
• For directories, it uses the directory name itself.
• For empty paths, it returns an empty string.

For example:

• Path: '/wp-content/plugins/my-plugin/blocks/example/block.json' Identifier: 'example'
• Path: '/wp-content/plugins/my-plugin/blocks/another-block' Identifier: 'another-block'

This default behavior matches the standard WordPress block structure.

Method of the class: WP_Block_Metadata_Registry{}

No Hooks.

Returns

String. The block identifier, or an empty string if the path is empty.

Usage

$result = WP_Block_Metadata_Registry::default_identifier_callback( $path );

$path(string) (required)

The normalized file or folder path to determine the block identifier from.

Changelog

WP_Block_Metadata_Registry::default_identifier_callback() WP Block Metadata Registry::default identifier callback code ^{WP 6.8.1}

private static function default_identifier_callback( $path ) {
	// Ensure $path is not empty to prevent unexpected behavior.
	if ( empty( $path ) ) {
		return '';
	}

	if ( str_ends_with( $path, 'block.json' ) ) {
		// Return the parent directory name if it's a block.json file.
		return basename( dirname( $path ) );
	}

	// Otherwise, assume it's a directory and return its name.
	return basename( $path );
}