使用定制助行器

class Your_Walker_Nav_Menu extends Walker_Nav_Menu {
    var $container_class;
    public function __construct($container_class) {
        $this->container_class = $container_class;
    }

    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        global $wp_query;
        $indent = ( $depth > 0 ? str_repeat( "\\t", $depth ) : \'\' ); // code indent

        // Depth-dependent classes.
        $depth_classes = array(
            ( $depth == 0 ? \'main-menu-item\' : \'sub-menu-item\' ),
            ( $depth >=2 ? \'sub-sub-menu-item\' : \'\' ),
            ( $depth % 2 ? \'menu-item-odd\' : \'menu-item-even\' ),
            \'menu-item-depth-\' . $depth
        );
        $depth_class_names = esc_attr( implode( \' \', $depth_classes ) );

        // Passed classes.
        $classes = empty( $item->classes ) ? array() : (array) $item->classes;
        $class_names = esc_attr( implode( \' \', apply_filters( \'nav_menu_css_class\', array_filter( $classes ), $item ) ) );

        // Build HTML.
        $output .= $indent . \'<li id="nav-menu-item-\'. $item->ID . \'" class="\'. $this->container_class . \'__item \' . $depth_class_names . \' \' . $class_names . \'">\';

        // Link attributes.
        $attributes  = ! empty( $item->attr_title ) ? \' title="\'  . esc_attr( $item->attr_title ) .\'"\' : \'\';
        $attributes .= ! empty( $item->target )     ? \' target="\' . esc_attr( $item->target     ) .\'"\' : \'\';
        $attributes .= ! empty( $item->xfn )        ? \' rel="\'    . esc_attr( $item->xfn        ) .\'"\' : \'\';
        $attributes .= ! empty( $item->url )        ? \' href="\'   . esc_attr( $item->url        ) .\'"\' : \'\';
        $attributes .= \' class="menu-link \' . ( $depth > 0 ? \'sub-menu-link\' : \'main-menu-link\' ) . \'"\';

        // Build HTML output and pass through the proper filter.
        $item_output = sprintf( \'%1$s<a%2$s>%3$s%4$s%5$s</a>%6$s\',
            $args->before,
            $attributes,
            $args->link_before,
            apply_filters( \'the_title\', $item->title, $item->ID ),
            $args->link_after,
            $args->after
        );
        $output .= apply_filters( \'walker_nav_menu_start_el\', $item_output, $item, $depth, $args );
    }
}

\'container_class\' => \'nav-primary\',
\'walker\' => new Your_Walker_Nav_Menu(\'nav-primary\')