面包屑导航未显示显示当前点击菜单的父菜单

时间：2018-05-18 13:45:03

标签： wordpress

我正在尝试在WordPress网站中集成面包屑导航，我希望以下列方式显示面包屑： -

主页＆gt;＆gt;父菜单名称＆gt;＆gt;父菜单中的子菜单名称

我试图实现以下代码： - 

function dimox_breadcrumbs() {
/* === OPTIONS === */
$text['home']     = 'Home'; // text for the 'Home' link
$text['category'] = 'Archive by Category "%s"'; // text for a category page
$text['search']   = 'Search Results for "%s" Query'; // text for a search results page
$text['tag']      = 'Posts Tagged "%s"'; // text for a tag page
$text['author']   = 'Articles Posted by %s'; // text for an author page
$text['404']      = 'Error 404'; // text for the 404 page
$text['page']     = 'Page %s'; // text 'Page N'
$text['cpage']    = 'Comment Page %s'; // text 'Comment Page N'
$wrap_before    = '<div class="breadcrumbs" itemscope itemtype="http://schema.org/BreadcrumbList">'; // the opening wrapper tag
$wrap_after     = '</div><!-- .breadcrumbs -->'; // the closing wrapper tag
$sep            = '›'; // separator between crumbs
$sep_before     = '<span class="sep">'; // tag before separator
$sep_after      = '</span>'; // tag after separator
$show_home_link = 1; // 1 - show the 'Home' link, 0 - don't show
$show_on_home   = 0; // 1 - show breadcrumbs on the homepage, 0 - don't show
$show_current   = 1; // 1 - show current page title, 0 - don't show
$before         = '<span class="current">'; // tag before the current crumb
$after          = '</span>'; // tag after the current crumb
/* === END OF OPTIONS === */
global $post;
$home_url       = home_url('/');
$link_before    = '<span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">';
$link_after     = '</span>';
$link_attr      = ' itemprop="item"';
$link_in_before = '<span itemprop="name">';
$link_in_after  = '</span>';
$link           = $link_before . '<a href="%1$s"' . $link_attr . '>' . $link_in_before . '%2$s' . $link_in_after . '</a>' . $link_after;
$frontpage_id   = get_option('page_on_front');
$parent_id      = ($post) ? $post->post_parent : '';
$sep            = ' ' . $sep_before . $sep . $sep_after . ' ';
$home_link      = $link_before . '<a href="' . $home_url . '"' . $link_attr . ' class="home">' . $link_in_before . $text['home'] . $link_in_after . '</a>' . $link_after;
if (is_home() || is_front_page()) {
    if ($show_on_home) echo $wrap_before . $home_link . $wrap_after;
} else {
    echo $wrap_before;
    if ($show_home_link) echo $home_link;
    if ( is_category() ) {
        $cat = get_category(get_query_var('cat'), false);
        if ($cat->parent != 0) {
            $cats = get_category_parents($cat->parent, TRUE, $sep);
            $cats = preg_replace("#^(.+)$sep$#", "$1", $cats);
            $cats = preg_replace('#<a([^>]+)>([^<]+)<\/a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats);
            if ($show_home_link) echo $sep;
            echo $cats;
        }
        if ( get_query_var('paged') ) {
            $cat = $cat->cat_ID;
            echo $sep . sprintf($link, get_category_link($cat), get_cat_name($cat)) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after;
        } else {
            if ($show_current) echo $sep . $before . sprintf($text['category'], single_cat_title('', false)) . $after;
        }
    } elseif ( is_search() ) {
        if (have_posts()) {
            if ($show_home_link && $show_current) echo $sep;
            if ($show_current) echo $before . sprintf($text['search'], get_search_query()) . $after;
        } else {
            if ($show_home_link) echo $sep;
            echo $before . sprintf($text['search'], get_search_query()) . $after;
        }
    } elseif ( is_day() ) {
        if ($show_home_link) echo $sep;
        echo sprintf($link, get_year_link(get_the_time('Y')), get_the_time('Y')) . $sep;
        echo sprintf($link, get_month_link(get_the_time('Y'), get_the_time('m')), get_the_time('F'));
        if ($show_current) echo $sep . $before . get_the_time('d') . $after;
    } elseif ( is_month() ) {
        if ($show_home_link) echo $sep;
        echo sprintf($link, get_year_link(get_the_time('Y')), get_the_time('Y'));
        if ($show_current) echo $sep . $before . get_the_time('F') . $after;
    } elseif ( is_year() ) {
        if ($show_home_link && $show_current) echo $sep;
        if ($show_current) echo $before . get_the_time('Y') . $after;
    } elseif ( is_single() && !is_attachment() ) {
        if ($show_home_link) echo $sep;
        if ( get_post_type() != 'post' ) {
            $post_type = get_post_type_object(get_post_type());
            $slug = $post_type->rewrite;
            printf($link, $home_url . $slug['slug'] . '/', $post_type->labels->singular_name);
            if ($show_current) echo $sep . $before . get_the_title() . $after;
        } else {
            $cat = get_the_category(); $cat = $cat[0];
            $cats = get_category_parents($cat, TRUE, $sep);
            if (!$show_current || get_query_var('cpage')) $cats = preg_replace("#^(.+)$sep$#", "$1", $cats);
            $cats = preg_replace('#<a([^>]+)>([^<]+)<\/a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats);
            echo $cats;
            if ( get_query_var('cpage') ) {
                echo $sep . sprintf($link, get_permalink(), get_the_title()) . $sep . $before . sprintf($text['cpage'], get_query_var('cpage')) . $after;
            } else {
                if ($show_current) echo $before . get_the_title() . $after;
            }
        }
    // custom post type
    } elseif ( !is_single() && !is_page() && get_post_type() != 'post' && !is_404() ) {
        $post_type = get_post_type_object(get_post_type());
        if ( get_query_var('paged') ) {
            echo $sep . sprintf($link, get_post_type_archive_link($post_type->name), $post_type->label) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after;
        } else {
            if ($show_current) echo $sep . $before . $post_type->label . $after;
        }
    } elseif ( is_attachment() ) {
        if ($show_home_link) echo $sep;
        $parent = get_post($parent_id);
        $cat = get_the_category($parent->ID); $cat = $cat[0];
        if ($cat) {
            $cats = get_category_parents($cat, TRUE, $sep);
            $cats = preg_replace('#<a([^>]+)>([^<]+)<\/a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats);
            echo $cats;
        }
        printf($link, get_permalink($parent), $parent->post_title);
        if ($show_current) echo $sep . $before . get_the_title() . $after;
    } elseif ( is_page() && !$parent_id ) {
        if ($show_current) echo $sep . $before . get_the_title() . $after;
    } elseif ( is_page() && $parent_id ) {
        if ($show_home_link) echo $sep;
        if ($parent_id != $frontpage_id) {
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                if ($parent_id != $frontpage_id) {
                    $breadcrumbs[] = sprintf($link, get_permalink($page->ID), get_the_title($page->ID));
                }
                $parent_id = $page->post_parent;
            }
            $breadcrumbs = array_reverse($breadcrumbs);
            for ($i = 0; $i < count($breadcrumbs); $i++) {
                echo $breadcrumbs[$i];
                if ($i != count($breadcrumbs)-1) echo $sep;
            }
        }
        if ($show_current) echo $sep . $before . get_the_title() . $after;
    } elseif ( is_tag() ) {
        if ( get_query_var('paged') ) {
            $tag_id = get_queried_object_id();
            $tag = get_tag($tag_id);
            echo $sep . sprintf($link, get_tag_link($tag_id), $tag->name) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after;
        } else {
            if ($show_current) echo $sep . $before . sprintf($text['tag'], single_tag_title('', false)) . $after;
        }
    } elseif ( is_author() ) {
        global $author;
        $author = get_userdata($author);
        if ( get_query_var('paged') ) {
            if ($show_home_link) echo $sep;
            echo sprintf($link, get_author_posts_url($author->ID), $author->display_name) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after;
        } else {
            if ($show_home_link && $show_current) echo $sep;
            if ($show_current) echo $before . sprintf($text['author'], $author->display_name) . $after;
        }
    } elseif ( is_404() ) {
        if ($show_home_link && $show_current) echo $sep;
        if ($show_current) echo $before . $text['404'] . $after;
    } elseif ( has_post_format() && !is_singular() ) {
        if ($show_home_link) echo $sep;
        echo get_post_format_string( get_post_format() );
    }
    echo $wrap_after;
}
} 

if (function_exists('dimox_breadcrumbs')) dimox_breadcrumbs();

我得到的输出如下： -

主页＆gt;＆gt;子菜单名称

请告诉我或纠正我应该在代码中更新的内容。

提前致谢

2 个答案:

答案 0 :(得分：0)

您的代码运行正常，我已经在默认二十七个 WordPress主题上对其进行了测试。

enter image description here

我猜您只需要正确创建Multi-level Menus，或者您的主题可能不支持。

答案 1 :(得分：0)

在子菜单中编辑页面时，右侧会有一个“页面属性”框。在这里，您可以为其选择父页面-可以是后端菜单编辑器中定义的自定义链接。显然，这也会影响链接结构，但是父页面会显示在面包屑中。也许这是有帮助的。至少这是我一直在寻找的时间。

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