WP_Admin_Bar::get_nodes(): array|void

User Contributed Notes

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   Codex 9 years ago

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   Add a Span Before the Title of All Toolbar Items

   This example adds an empty span with the class “my-class” before every Toolbar item’s title. Put this in your theme’s functions.php file.

   /**
    * Prefix top-level toolbar items with a span container.
    *
    * @param WP_Admin_Bar $wp_admin_bar Toolbar instance.
    */
   function wpdocs_all_toolbar_nodes( $wp_admin_bar ) {
   
   	$all_toolbar_nodes = $wp_admin_bar->get_nodes();
   
   	foreach ( $all_toolbar_nodes as $node ) {
   
   		// use the same node's properties
   		$args = $node;
   
   		// put a span before the title
   		$args->title = '<span class="my-class"></span>' . $node->title;
   
   		// update the Toolbar node
   		$wp_admin_bar->add_node( $args );
   	}
   
   }
   add_action( 'admin_bar_menu', 'wpdocs_all_toolbar_nodes', 999 );
2. Skip to note 4 content

   Codex 9 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

   Display all Node ID’s of the Current Page in the Toolbar

   This example will add all node ID’s on the current page to a top-level Toolbar item called “Node ID’s”. This is for developers who want to find out what the node ID is for a specific node. Put this in your theme’s functions.php file.

   // use 'wp_before_admin_bar_render' hook to also get nodes produced by plugins.
   add_action( 'wp_before_admin_bar_render', 'add_all_node_ids_to_toolbar' );
   
   function add_all_node_ids_to_toolbar() {
   
   	global $wp_admin_bar;
   	$all_toolbar_nodes = $wp_admin_bar->get_nodes();
   
   	if ( $all_toolbar_nodes ) {
   
   		// add a top-level Toolbar item called "Node Id's" to the Toolbar
   		$args = array(
   			'id'    => 'node_ids',
   			'title' => 'Node ID\'s'
   		);
   		$wp_admin_bar->add_node( $args );
   
   		// add all current parent node id's to the top-level node.
   		foreach ( $all_toolbar_nodes as $node  ) {
   			if ( isset($node->parent) && $node->parent ) {
   
   				$args = array(
   					'id'     => 'node_id_'.$node->id, // prefix id with "node_id_" to make it a unique id
   					'title'  => $node->id,
   					'parent' => 'node_ids'
   					// 'href' => $node->href,
   				);
   				// add parent node to node "node_ids"
   				$wp_admin_bar->add_node($args);
   			}
   		}
   
   		// add all current Toolbar items to their parent node or to the top-level node
   		foreach ( $all_toolbar_nodes as $node ) {
   
   			$args = array(
   				'id'      => 'node_id_'.$node->id, // prefix id with "node_id_" to make it a unique id
   				'title'   => $node->id,
   				// 'href' => $node->href,
   			);
   
   			if ( isset($node->parent) && $node->parent ) {
   				$args['parent'] = 'node_id_'.$node->parent;
   			} else {
   				$args['parent'] = 'node_ids';
   			}
   
   			$wp_admin_bar->add_node($args);
   		}
   	}
   }