问题描述
我使用 WordPress walker 功能创建了一个自定义 WordPress 菜单。除了将顶级菜单标题添加到函数“start_lvl”部分中的一个 div 之后,我已经设法完成了我需要的所有必要的 HTML。
输出应如下所示:
<ul>
<li><a href="#">Title</a>
<div class="mega-menu">
<div class="mega-menu-inner">
<h2 class="fz-40">DISPLAY TOP MENU TITLE HERE</h2>
<ul class="mega-menu-accordion-wrap">
<li class="mega-menu-accordion">
<a href="#"></a>
<div class="mega-menu-accordion-inner">
<ul>
<li><a href="#"></a>
<div class="sub-mega-menu-wrap">
<ul>
<li><a href="#"></a></li>
</ul>
</div>
</li>
</ul>
</div>
</li>
</ul>
</div>
</div>
</li>
</ul>
这是我目前为 WP 导航步行者所做的:
wp_nav_menu( array(
'theme_location' => "header-menu",'walker' => new WPDocs_Walker_Nav_Menu() ) );
/**
* Custom walker class.
*/
class WPDocs_Walker_Nav_Menu extends Walker_Nav_Menu {
/**
* Starts the list before the elements are added.
*
* Adds classes to the unordered list sub-menus.
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
function start_lvl( &$output,$depth = 0,$args = array() ) {
// Depth-dependent classes.
$indent = ( $depth > 0 ? str_repeat( "\t",$depth ) : '' ); // code indent
$display_depth = ( $depth + 1); // because it counts the first submenu as 0
$classes = array(
'sub-menu',( $display_depth % 2 == 0 ? 'menu-odd' : 'mega-menu-accordion-wrap' ),( $display_depth >=2 ? 'sub-sub-menu' : '' ),'menu-depth-' . $display_depth
);
$class_names = implode( ' ',$classes );
// Build HTML for output.
if( $display_depth === 1):
global $title;
$output .= '<div class="mega-menu">';
$output .= '<div class="mega-menu-container-wrap">';
$output .= '<div class="mega-menu-help-bar"><figure> <img src="'.get_template_directory_uri().'/svg/search-white.svg" alt=""></figure><a href="#">Need some help?</a></div>';
$output .= '<div class="mega-menu-inner">';
$output .= '<h2 class="fz-40">Need the Title Here''</h2>';
$output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
elseif( $display_depth % 3 === 0):
$output .= "\n" . $indent . '<div class="sub-mega-menu-wrap">' . "\n";
$output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
elseif( $display_depth % 2 === 0):
$output .= "\n" . $indent . '<div class="mega-menu-accordion-inner">' . "\n";
$output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
else:
$output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
endif;
}
/**
* Start the element output.
*
* Adds main/sub-classes to the list items and links.
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
* @param int $id Current item ID.
*/
function start_el( &$output,$item,$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 == 0 ? 'menu-item-odd' : 'mega-menu-accordion' ),'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.
if( $depth % 2 === 0):
$output .= $indent . '<li id="nav-menu-item-'. $item->ID . '" class="' . $depth_class_names . ' ' . $class_names . ' ">';
else:
$output .= $indent . '<li id="nav-menu-item-'. $item->ID . '" class="' . $depth_class_names . ' ' . $class_names . '">';
endif;
// 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,$depth,$args );
}
}
解决方法
在我发帖后不久解决了这个问题, 对于需要此功能的任何人,我执行了以下操作:
将此添加到functions.php文件中:
function add_menu_title( $item_output,$item,$depth,$args ) {
global $menuTitle;
$menuTitle = $item->title;
return $item_output;
}
add_filter( 'walker_nav_menu_start_el','add_menu_title',10,4);
然后在您的标题模板中将此添加到您希望它显示的部分。在我的示例中,我将 depth===1 更新为以下内容:
if( $display_depth === 1):
global $menuTitle;
$output .= '<div class="mega-menu">';
$output .= '<div class="mega-menu-container-wrap">';
$output .= '<div class="mega-menu-help-bar"><figure> <img src="'.get_template_directory_uri().'/svg/search-white.svg" alt=""></figure><a href="#">Need some help?</a></div>';
$output .= '<div class="mega-menu-inner">';
$output .= '<h2 class="fz-40">'.$menuTitle.'</h2>';
$output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";