我有一个问题，我知道为什么，但我找不到解决方案，也找不到解决方法！

问题是在菜单中使用自定义预览时，实时预览编辑不起作用，这是因为我没有使用wp_nav_menu 函数，而我使用wp_get_nav_menu_items 因为它更具自定义性，我需要按名称为每个菜单项插入不同的图标，如下面的代码所示：

// Get the nav menu based on $menu_name (same as \'theme_location\' or \'menu\' arg to wp_nav_menu)
            // This code based on wp_nav_menu\'s code to get Menu ID from menu slug
            if ( is_front_page() )
                $menu_name = \'home\';
            else
                $menu_name = \'primary\';

            if ( ( $locations = get_nav_menu_locations() ) && isset( $locations[ $menu_name ] ) ) {

                $menu = wp_get_nav_menu_object( $locations[ $menu_name ] );

                $menu_items = wp_get_nav_menu_items($menu->term_id);

                $menu_list = \'<ul class="menu nav list-unstyled nav-stacked" role="tablist" id="menu-nav-menu">\';


                foreach ( (array) $menu_items as $key => $menu_item ) {
                    $title = $menu_item->title;
                    $id    = $menu_item->ID;
                    $title = strtolower($title);
                    $title = rtrim($title);

                    $url = $menu_item->url;
                    $active = \'\';
                    $actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
                    if($url == $actual_link)
                    {
                        $active = \'active\';
                    }
                    else {
                        $active = \'\';
                    }

                    switch ($title) {
                        case \'profile\':
                            $nav_icon = \'fa-user\';
                            break;

                        case \'resume\':
                            $nav_icon = \'fa-file\';
                            break;

                        case \'portfolio\':
                            $nav_icon = \'fa-paint-brush\';
                            break;

                        case \'plans\':
                            $nav_icon = \'fa-map-signs\';
                            break;

                        case \'blog\':
                            $nav_icon = \'fa-pencil\';
                            break;

                        case \'testimonials\':
                            $nav_icon = \'fa-quote-left\';
                            break;

                        case \'clients\':
                            $nav_icon = \'fa-users\';
                            break;

                        case \'contact\':
                            $nav_icon = \'fa-envelope\';
                            break;

                        default:
                            $nav_icon = \'fa-eercast\';
                            break;
                    }

                    $menu_list .= "<li id=\'menu-item-{$id}\' class=\'{$active} menu-item menu-item-type-custom menu-item-object-custom menu-item-{$id}\'><a href=\'{$url}\'><i class=\'fa {$nav_icon}\'></i> {$title}</a></li>";
                }
                $menu_list .= \'<li><form method="get" action="\'.site_url(\'/\').\'"><input type="search" name="s" class="form-control" placeholder="Search..."></form></li>\';
                $menu_list .= \'</ul>\';

            } else {
                $menu_list = \'<ul class="nav list-unstyled nav-stacked"><li style="color: #fff">Menu "\' . $menu_name . \'" <strong>empty!</strong>.</li></ul>\';
            }

            // $menu_list now ready to output
            echo $menu_list;

因此，如果中间有任何解决方案，如我可以插入图标（仅使用代码，因为我不能使用插件），并启用快速预览定制器，我将不胜感激。

wp_nav_menu( array(
    \'theme_location\' => \'primary\',
    \'walker\' => \'My_Custom_Nav_Menu_Walker\',
) );