register_block_script_handle() WP 5.5.0

Finds a script handle for the selected block metadata field. It detects when a path to file was provided and finds a corresponding asset file with details necessary to register the script under automatically generated handle name. It returns unprocessed script handle otherwise.

No Hooks.

Return

String|false. Script handle provided directly or created through script's registration, or false on failure.

Usage

register_block_script_handle( $metadata, $field_name );

$metadata(array) (required)

Block metadata.

$field_name(string) (required)

Field name to pick from metadata.

Code of register_block_script_handle() register block script handle ^{WP 5.8.3}

function register_block_script_handle( $metadata, $field_name ) {
	if ( empty( $metadata[ $field_name ] ) ) {
		return false;
	}
	$script_handle = $metadata[ $field_name ];
	$script_path   = remove_block_asset_path_prefix( $metadata[ $field_name ] );
	if ( $script_handle === $script_path ) {
		return $script_handle;
	}

	$script_handle     = generate_block_asset_handle( $metadata['name'], $field_name );
	$script_asset_path = realpath(
		dirname( $metadata['file'] ) . '/' .
		substr_replace( $script_path, '.asset.php', - strlen( '.js' ) )
	);
	if ( ! file_exists( $script_asset_path ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: 1: Field name, 2: Block name. */
				__( 'The asset file for the "%1$s" defined in "%2$s" block definition is missing.' ),
				$field_name,
				$metadata['name']
			),
			'5.5.0'
		);
		return false;
	}
	$script_asset = require $script_asset_path;
	$result       = wp_register_script(
		$script_handle,
		plugins_url( $script_path, $metadata['file'] ),
		$script_asset['dependencies'],
		$script_asset['version']
	);
	if ( ! $result ) {
		return false;
	}

	if ( ! empty( $metadata['textdomain'] ) ) {
		wp_set_script_translations( $script_handle, $metadata['textdomain'] );
	}

	return $script_handle;
}