WP_Admin_Bar::add_node() │ public │ WP 3.1.0

Adds a node to the menu.

{} It's a method of the class: WP_Admin_Bar{}

Uses: WP_Admin_Bar::_set_node()
Used By: WP_Admin_Bar::add_menu()

No Hooks.

Return

null. Nothing.

Usage

$WP_Admin_Bar = new WP_Admin_Bar();
$WP_Admin_Bar->add_node( $args );
$args(array) (required)

Arguments for adding a node.

  • id(string)
    ID of the item.

  • title(string)
    Title of the node.

  • parent(string)
    Optional. ID of the parent node.

  • href(string)
    Optional. Link for the item.

  • group(true|false)
    Optional. Whether or not the node is a group.
    Default: false

  • meta(array)
    Meta data including the following keys: 'html', 'class', 'rel', 'lang', 'dir', 'onclick', 'target', 'title', 'tabindex'.
    Default: ''

Changelog

Since 3.1.0 Introduced.
Since 4.5.0 Added the ability to pass 'lang' and 'dir' meta data.

Code of WP_Admin_Bar::add_node() WP 6.0.1

wp-includes/class-wp-admin-bar.php 
public function add_node( $args ) {
	// Shim for old method signature: add_node( $parent_id, $menu_obj, $args ).
	if ( func_num_args() >= 3 && is_string( $args ) ) {
		$args = array_merge( array( 'parent' => $args ), func_get_arg( 2 ) );
	}

	if ( is_object( $args ) ) {
		$args = get_object_vars( $args );
	}

	// Ensure we have a valid title.
	if ( empty( $args['id'] ) ) {
		if ( empty( $args['title'] ) ) {
			return;
		}

		_doing_it_wrong( __METHOD__, __( 'The menu ID should not be empty.' ), '3.3.0' );
		// Deprecated: Generate an ID from the title.
		$args['id'] = esc_attr( sanitize_title( trim( $args['title'] ) ) );
	}

	$defaults = array(
		'id'     => false,
		'title'  => false,
		'parent' => false,
		'href'   => false,
		'group'  => false,
		'meta'   => array(),
	);

	// If the node already exists, keep any data that isn't provided.
	$maybe_defaults = $this->get_node( $args['id'] );
	if ( $maybe_defaults ) {
		$defaults = get_object_vars( $maybe_defaults );
	}

	// Do the same for 'meta' items.
	if ( ! empty( $defaults['meta'] ) && ! empty( $args['meta'] ) ) {
		$args['meta'] = wp_parse_args( $args['meta'], $defaults['meta'] );
	}

	$args = wp_parse_args( $args, $defaults );

	$back_compat_parents = array(
		'my-account-with-avatar' => array( 'my-account', '3.3' ),
		'my-blogs'               => array( 'my-sites', '3.3' ),
	);

	if ( isset( $back_compat_parents[ $args['parent'] ] ) ) {
		list( $new_parent, $version ) = $back_compat_parents[ $args['parent'] ];
		_deprecated_argument( __METHOD__, $version, sprintf( 'Use <code>%s</code> as the parent for the <code>%s</code> admin bar node instead of <code>%s</code>.', $new_parent, $args['id'], $args['parent'] ) );
		$args['parent'] = $new_parent;
	}

	$this->_set_node( $args );
}

Admin Bar (toolbar)