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register_block_script_handle › WordPress Function

Since5.5.0
Deprecatedn/a
› register_block_script_handle ( $metadata, $field_name, $index = 0 )
Parameters: (3)
  • (array) $metadata Block metadata.
    Required: Yes
  • (string) $field_name Field name to pick from metadata.
    Required: Yes
  • (int) $index Optional. Index of the script to register when multiple items passed. Default 0.
    Required: No
    Default: —
Returns:
  • (string|false) Script handle provided directly or created through script's registration, or false on failure.
Defined at:
Codex:
Change Log:
  • 6.1.0

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.



Related Functions: register_block_style_handle, register_core_block_style_handles, register_block_style, register_block_core_file, register_block_core_post_date

Source 

function register_block_script_handle( $metadata, $field_name, $index = 0 ) {
	if ( empty( $metadata[ $field_name ] ) ) {
		return false;
	}

	$script_handle = $metadata[ $field_name ];
	if ( is_array( $script_handle ) ) {
		if ( empty( $script_handle[ $index ] ) ) {
			return false;
		}
		$script_handle = $script_handle[ $index ];
	}

	$script_path = remove_block_asset_path_prefix( $script_handle );
	if ( $script_handle === $script_path ) {
		return $script_handle;
	}

	$path                  = dirname( $metadata['file'] );
	$script_asset_raw_path = $path . '/' . substr_replace( $script_path, '.asset.php', - strlen( '.js' ) );
	$script_handle         = generate_block_asset_handle( $metadata['name'], $field_name, $index );
	$script_asset_path     = wp_normalize_path(
		realpath( $script_asset_raw_path )
	);

	if ( empty( $script_asset_path ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: 1: Asset file location, 2: Field name, 3: Block name.  */
				__( 'The asset file (%1$s) for the "%2$s" defined in "%3$s" block definition is missing.' ),
				$script_asset_raw_path,
				$field_name,
				$metadata['name']
			),
			'5.5.0'
		);
		return false;
	}

	$script_path_norm = wp_normalize_path( realpath( $path . '/' . $script_path ) );
	$script_uri       = get_block_asset_url( $script_path_norm );

	$script_args = array();
	if ( 'viewScript' === $field_name && $script_uri ) {
		$script_args['strategy'] = 'defer';
	}

	$script_asset        = require $script_asset_path;
	$script_dependencies = isset( $script_asset['dependencies'] ) ? $script_asset['dependencies'] : array();
	$result              = wp_register_script(
		$script_handle,
		$script_uri,
		$script_dependencies,
		isset( $script_asset['version'] ) ? $script_asset['version'] : false,
		$script_args
	);
	if ( ! $result ) {
		return false;
	}

	if ( ! empty( $metadata['textdomain'] ) && in_array( 'wp-i18n', $script_dependencies, true ) ) {
		wp_set_script_translations( $script_handle, $metadata['textdomain'] );
	}

	return $script_handle;
}