使用wp_NAV_MENU_OBJECTS动态添加菜单项

在我的主导航中，我希望每个顶级页面都有一个子页面列表。因此，我创建了将菜单项动态添加到主导航的代码。这只适用于子页面的第一级。您可以看到，我注释掉了进入第二级的代码，因为它在主级上输出了这些链接。我不知道为什么它在第二层上不起作用。难道我们不能将菜单项分配给动态生成的父菜单项？

它看起来像：

add_filter( \'wp_nav_menu_objects\', \'epc_wp_nav_menu_items\', 10, 2 );
function epc_wp_nav_menu_items($items, $args) {
    if ($args->theme_location == \'primary\') {
        $menu_order = 10000;
        $menu_order2 = 20000;
        global $wpdb;
        global $post;
        $post_id = 0;       
        if($post){
            $post_id = $post->ID;
        }

        foreach($items as $item){
            $pageChildren = $wpdb->get_results("SELECT post_title, ID FROM wp_posts WHERE post_parent = ".$item->object_id." AND post_status = \'publish\' AND post_type=\'page\' ORDER BY menu_order", \'OBJECT\' );
            foreach($pageChildren as $child){
                $menu_order++;
                $new_item = epc_add_menu_item($post_id, $menu_order, $item, $child);
                $items[] = (object)$new_item;
                /*
                $pageChildrenSecondLevel = $wpdb->get_results("SELECT post_title, ID FROM wp_posts WHERE post_parent = ".$child->ID." AND post_status = \'publish\' AND post_type=\'page\' ORDER BY menu_order", \'OBJECT\' );
                foreach($pageChildrenSecondLevel as $child2){
                    $menu_order2++;
                    $new_item2 = epc_add_menu_item($post_id, $menu_order2, $new_item, $child2);
                    $items[] = (object)$new_item2;
                }
                */
            }
        }
    }
    return $items;
}

function epc_add_menu_item($post_id, $menu_order, $item, $child){
                $new_item = new stdClass;
                $new_item->ID = $menu_order;
                $new_item->menu_item_parent = $item->ID;
                $new_item->url = get_permalink( $child->ID );
                $new_item->title = $child->post_title;
                $new_item->menu_order = $menu_order;
                $new_item->object_id = $child->ID;
                $new_item->post_parent = $item->object_id;
                $classes = \'menu-item\';
                $classes .= \' menu-item-parent-\' . $item->ID;
                $classes .= \' menu-item-type-post_type\';
                $classes .= \' menu-item-object-page\';
                if($post_id == $child->ID){
                    $classes .= \' current-menu-item\';
                    $classes .= \' page-item\';
                    $classes .= \' page-item-\' . $child->ID ;
                    $classes .= \' current_page_item\';
                }   
                $new_item->classes = $classes;
                return $new_item;
}

class Wp_Sublevel_Walker extends Walker_Nav_Menu { function start_lvl(&$output, $depth = 0, $args = array()) { $indent = str_repeat("\\t", $depth); $output .= "\\n$indent<ul class=\'submenu\'>\\n"; } function end_lvl(&$output, $depth = 0, $args = array()) { $indent = str_repeat("\\t", $depth); $output .= "$indent</ul>\\n"; } }

How to add taxonomy in menus?

书籍（自定义帖子类型）小说（税）科学（税）历史（税）--书籍体裁（税务）小说（术语）科学（学期）历史（学期）以下哪一项是做这件事的“好方法”？对于前一个（这是我目前在管理菜单中的功能，我为每个功能都提供了“register\\u taxonomy”功能），我无法选择要在菜单中显示的“Tax”。而对于后者，我可以将它们添加到菜单中，只需要一个“register\\u taxonomy”函数。

相关推荐

How to add taxonomy in menus?