用于检索菜单元框的Ajax处理程序。

原型

wp_ajax_menu_get_metabox()

源文件

路径:wp-admin/includes/ajax-actions.php

<?php
...
function wp_ajax_menu_get_metabox() {
	if ( ! current_user_can( 'edit_theme_options' ) )
		wp_die( -1 );
	require_once ABSPATH . 'wp-admin/includes/nav-menu.php';
	if ( isset( $_POST['item-type'] ) && 'post_type' == $_POST['item-type'] ) {
		$type = 'posttype';
		$callback = 'wp_nav_menu_item_post_type_meta_box';
		$items = (array) get_post_types( array( 'show_in_nav_menus' => true ), 'object' );
	} elseif ( isset( $_POST['item-type'] ) && 'taxonomy' == $_POST['item-type'] ) {
		$type = 'taxonomy';
		$callback = 'wp_nav_menu_item_taxonomy_meta_box';
		$items = (array) get_taxonomies( array( 'show_ui' => true ), 'object' );
	}
	if ( ! empty( $_POST['item-object'] ) && isset( $items[$_POST['item-object']] ) ) {
		$menus_meta_box_object = $items[ $_POST['item-object'] ];
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$item = apply_filters( 'nav_menu_meta_box_object', $menus_meta_box_object );
		ob_start();
		call_user_func_array($callback, array(
			null,
			array(
				'id' => 'add-' . $item->name,
				'title' => $item->labels->name,
				'callback' => $callback,
				'args' => $item,
			)
		));
		$markup = ob_get_clean();
		echo wp_json_encode(array(
			'replace-id' => $type . '-' . $item->name,
			'markup' => $markup,
		));
	}
	wp_die();
}
...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/wp_ajax_menu_get_metabox/