Question

我在Wordpress项目中使用this nav walker。例如，我要创建多级菜单。我需要更改使其工作吗？又或者它是另一个带有多级菜单支持的BS4助行器？

Menu Item
- Sub menu
-- Sub menu item
-- Sub menu item
Menu Item

Answer 1

添加此CSS

ul.dropdown-menu li > ul.dropdown-menu{
    left: 100%;
    top: 0;
}

ul.dropdown-menu li:hover > ul.dropdown-menu, ul.dropdown-menu li:focus > ul.dropdown-menu{
    display: block
}

从class-wp-bootstrap-navwalker.php删除此代码&& 0 === $depth

原始代码：

if ( isset( $args->has_children ) && $args->has_children && 0 === $depth && $args->depth > 1 ) {

编辑后：

if ( isset( $args->has_children ) && $args->has_children && $args->depth > 1 ) {

Answer 2

Bulding simple menu list-在用户提供的注释（第1部分）中，您可以使用菜单数组数据找到构建菜单的代码，该数据很简单，可以根据需要进行修改。

代码如下：

<?php
// Intented to use bootstrap 3.
// Location is like a 'primary'
// After, you print menu just add create_bootstrap_menu("primary") in your 
preferred position;

#add this function in your theme functions.php

function create_bootstrap_menu( $theme_location ) {
if ( ($theme_location) && ($locations = get_nav_menu_locations()) && isset($locations[$theme_location]) ) {

    $menu_list  = '<nav class="navbar navbar-default">' ."\n";
    $menu_list .= '<div class="container-fluid">' ."\n";
    $menu_list .= '<!-- Brand and toggle get grouped for better mobile display -->' ."\n";
    $menu_list .= '<div class="navbar-header">' ."\n";
    $menu_list .= '<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">' ."\n";
    $menu_list .= '<span class="sr-only">Toggle navigation</span>' ."\n";
    $menu_list .= '<span class="icon-bar"></span>' ."\n";
    $menu_list .= '<span class="icon-bar"></span>' ."\n";
    $menu_list .= '<span class="icon-bar"></span>' ."\n";
    $menu_list .= '</button>' ."\n";
    $menu_list .= '<a class="navbar-brand" href="' . home_url() . '">' . get_bloginfo( 'name' ) . '</a>';
    $menu_list .= '</div>' ."\n";

    $menu_list .= '<!-- Collect the nav links, forms, and other content for toggling -->';


    $menu = get_term( $locations[$theme_location], 'nav_menu' );
    $menu_items = wp_get_nav_menu_items($menu->term_id);

    $menu_list .= '<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">' ."\n";
    $menu_list .= '<ul class="nav navbar-nav">' ."\n";

    foreach( $menu_items as $menu_item ) {
        if( $menu_item->menu_item_parent == 0 ) {

            $parent = $menu_item->ID;

            $menu_array = array();
            foreach( $menu_items as $submenu ) {
                if( $submenu->menu_item_parent == $parent ) {
                    $bool = true;
                    $menu_array[] = '<li><a href="' . $submenu->url . '">' . $submenu->title . '</a></li>' ."\n";
                }
            }
            if( $bool == true && count( $menu_array ) > 0 ) {

                $menu_list .= '<li class="dropdown">' ."\n";
                $menu_list .= '<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">' . $menu_item->title . ' <span class="caret"></span></a>' ."\n";

                $menu_list .= '<ul class="dropdown-menu">' ."\n";
                $menu_list .= implode( "\n", $menu_array );
                $menu_list .= '</ul>' ."\n";

            } else {

                $menu_list .= '<li>' ."\n";
                $menu_list .= '<a href="' . $menu_item->url . '">' . $menu_item->title . '</a>' ."\n";
            }

        }

        // end <li>
        $menu_list .= '</li>' ."\n";
    }

    $menu_list .= '</ul>' ."\n";
    $menu_list .= '</div>' ."\n";
    $menu_list .= '</div><!-- /.container-fluid -->' ."\n";
    $menu_list .= '</nav>' ."\n";

} else {
    $menu_list = '<!-- no menu defined in location "'.$theme_location.'" -->';
}

echo $menu_list;
}
?>

Bootstrap 4 navwalker-多级菜单

2 个答案: