我正在尝试为我的WordPress主题添加自定义菜单结构。这就是我想要的外观：

<li>
    <a href="link_to_parent_item" class="main-category" tabindex="3">Parent Name</a>
    <div class="sub-menu">
        <div class="sub-links pull-left">
            <a href="link_to_child_item">Child Name1</a>
            <a href="link_to_child_item">Child Name2</a>
        </div>
    </div>
</li>

我已经写了一个定制步行器来实现这一点，但它并没有给我真正想要的东西。这是我的学步课：

class loggmax_class_walker extends Walker_Nav_Menu{

// Start level, beginning tags
function start_lvl(&$output, $depth) {
    $indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';
    $output .= "\\n$indent";
    $output .= \'<div class="sub-menu">\';
    $output .= \'<div class="sub-links pull-left">\';
}

function end_lvl(&$output, $depth) {
    $indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';
    $output .= "$indent</div>";
    $output .= \'</div>\';
}

// Start element (beginning list items)
function start_el( &$output, $item, $depth=0, $args=array(),$current_object_id=0 ) {
    $this->curItem = $item;
    $indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';
    $class_names = $value = \'\';
    $classes = empty( $item->classes ) ? array() : (array) $item->classes;
    $classes[] = \'menu-item-\' . $item->ID;
    $class_names = join( \' \', apply_filters( \'nav_menu_css_class\', array_filter( $classes ), $item, $args ) );
    $class_names = $class_names ? \' class="\' . esc_attr( $class_names ) . \'"\' : \'\';
    $id = apply_filters( \'nav_menu_item_id\', \'menu-item-\'. $item->ID, $item, $args );
    $id = $id ? \' id="\' . esc_attr( $id ) . \'"\' : \'\';

    $atts = array();
    $atts[\'title\']  = ! empty( $item->attr_title ) ? $item->attr_title : \'\';
    $atts[\'target\'] = ! empty( $item->target )     ? $item->target     : \'\';
    $atts[\'rel\']    = ! empty( $item->xfn )        ? $item->xfn        : \'\';
    $atts[\'href\']   = ! empty( $item->url )        ? $item->url        : \'\';
    $atts[\'slug\']   = ! empty( $item->slug )        ? $item->slug      : \'\';
    $atts = apply_filters( \'nav_menu_link_attributes\', $atts, $item, $args );
    $attributes = \'\';
    $item_output = \'\';
    foreach ( $atts as $attr => $value ) {
        if ( ! empty( $value ) ) {
            $value = ( \'href\' === $attr ) ? esc_url( $value ) : esc_attr( $value );
            $attributes .= \' \' . $attr . \'="\' . $value . \'"\';
        }
    }

    // Check if it is a submenu
    if ( $depth == 1 ) {
        $output .= \'<a\'. $attributes. \' >\';
        $output .= apply_filters( \'the_title\', $item->title, $item->ID );
        $output .= \'</a>\';

    } elseif ( $depth == 0 ) {
        $item_output .= \'<li>\';
        $item_output .= \'<a\'. $attributes. \' class="main-category">\';
        $item_output .= apply_filters( \'the_title\', $item->title, $item->ID );
        $item_output .= \'</a>\';
    }

        $output .= apply_filters( \'walker_nav_menu_start_el\', $item_output, $item, $depth, $args );
}
}

这个代码在我的标题中。php

if ( has_nav_menu( \'primary-menu\' ) )
        wp_nav_menu( array(
            \'theme_location\'    => \'primary-menu\',
            \'container\'         => \'ul\',
            \'menu_class\'        => \'pull-left\',
            \'items_wrap\'        => \'<ul id="%1$s" class="%2$s">%3$s</ul>\',
            \'walker\'            => new loggmax_class_walker()
        ) );

这就是正在显示的内容：

<li>
   <a href="link_here" class="main-category">Parent Title</a>
    <div class="sub-menu">
       <div class="sub-links pull-left">
         <a href="link_here">Child Title</a></li>
         <a href="link_here">Child Title 2</a></li>
    </div>
</li>

如何删除结束列表标记</li> 是否正在子菜单项中打印？

public function end_el( &$output, $item, $depth = 0, $args = array() ) {
    if ( isset( $args->item_spacing ) && \'discard\' === $args->item_spacing ) {
        $n = \'\';
    } else {
        $n = "\\n";
    }
    if ( $depth == 0 ) {
        $output .= "</li>{$n}";
    } else {
        $output .= "{$n}";
    }
}

<li></li>