为WordPress添加一个面包屑导航-狐狸库

如何在你的Wordpres中为页面添加面包屑导航，支持自定义帖子类型、自定义分类。

但貌似在分类归档页面不能显示父子分类层级有点遗憾。

代码实现

将代码添加到当前主题函数模板functions.php中：

/**
 * WordPress Breadcrumbs
 */
function tsh_wp_custom_breadcrumbs() {
 
    $separator              = \'/\';
    $breadcrumbs_id         = \'tsh_breadcrumbs\';
    $breadcrumbs_class      = \'tsh_breadcrumbs\';
    $home_title             = esc_html__(\'Home\', \'your-domain\');
 
    // Add here you custom post taxonomies
    $tsh_custom_taxonomy    = \'product_cat\';
 
    global $post,$wp_query;
       
    // Hide from front page
    if ( !is_front_page() ) {
       
        echo \'<ul id=\"\' . $breadcrumbs_id . \'\" class=\"\' . $breadcrumbs_class . \'\">\';
           
        // Home
        echo \'<li class=\"item-home\"><a class=\"bread-link bread-home\" href=\"\' . get_home_url() . \'\" title=\"\' . $home_title . \'\">\' . $home_title . \'</a></li>\';
        echo \'<li class=\"separator separator-home\"> \' . $separator . \' </li>\';
           
        if ( is_archive() && !is_tax() && !is_category() && !is_tag() ) {
              
            echo \'<li class=\"item-current item-archive\"><strong class=\"bread-current bread-archive\">\' . post_type_archive_title(\'\', false) . \'</strong></li>\';
              
        } else if ( is_archive() && is_tax() && !is_category() && !is_tag() ) {
              
            // For Custom post type
            $post_type = get_post_type();
              
            // Custom post type name and link
            if($post_type != \'post\') {
                  
                $post_type_object = get_post_type_object($post_type);
                $post_type_archive = get_post_type_archive_link($post_type);
              
                echo \'<li class=\"item-cat item-custom-post-type-\' . $post_type . \'\"><a class=\"bread-cat bread-custom-post-type-\' . $post_type . \'\" href=\"\' . $post_type_archive . \'\" title=\"\' . $post_type_object->labels->name . \'\">\' . $post_type_object->labels->name . \'</a></li>\';
                echo \'<li class=\"separator\"> \' . $separator . \' </li>\';
              
            }
              
            $custom_tax_name = get_queried_object()->name;
            echo \'<li class=\"item-current item-archive\"><strong class=\"bread-current bread-archive\">\' . $custom_tax_name . \'</strong></li>\';
              
        } else if ( is_single() ) {
              
            $post_type = get_post_type();
 
            if($post_type != \'post\') {
                  
                $post_type_object = get_post_type_object($post_type);
                $post_type_archive = get_post_type_archive_link($post_type);
              
                echo \'<li class=\"item-cat item-custom-post-type-\' . $post_type . \'\"><a class=\"bread-cat bread-custom-post-type-\' . $post_type . \'\" href=\"\' . $post_type_archive . \'\" title=\"\' . $post_type_object->labels->name . \'\">\' . $post_type_object->labels->name . \'</a></li>\';
                echo \'<li class=\"separator\"> \' . $separator . \' </li>\';
              
            }
              
            // Get post category
            $category = get_the_category();
             
            if(!empty($category)) {
              
                // Last category post is in
                $last_category = $category[count($category) - 1];
                  
                // Parent any categories and create array
                $get_cat_parents = rtrim(get_category_parents($last_category->term_id, true, \',\'),\',\');
                $cat_parents = explode(\',\',$get_cat_parents);
                  
                // Loop through parent categories and store in variable $cat_display
                $cat_display = \'\';
                foreach($cat_parents as $parents) {
                    $cat_display .= \'<li class=\"item-cat\">\'.$parents.\'</li>\';
                    $cat_display .= \'<li class=\"separator\"> \' . $separator . \' </li>\';
                }
             
            }
 
            $taxonomy_exists = taxonomy_exists($tsh_custom_taxonomy);
            if(empty($last_category) && !empty($tsh_custom_taxonomy) && $taxonomy_exists) {
                   
                $taxonomy_terms = get_the_terms( $post->ID, $tsh_custom_taxonomy );
                $cat_id         = $taxonomy_terms[0]->term_id;
                $cat_nicename   = $taxonomy_terms[0]->slug;
                $cat_link       = get_term_link($taxonomy_terms[0]->term_id, $tsh_custom_taxonomy);
                $cat_name       = $taxonomy_terms[0]->name;
               
            }
              
            // If the post is in a category
            if(!empty($last_category)) {
                echo $cat_display;
                echo \'<li class=\"item-current item-\' . $post->ID . \'\"><strong class=\"bread-current bread-\' . $post->ID . \'\" title=\"\' . get_the_title() . \'\">\' . get_the_title() . \'</strong></li>\';
                  
            // Post is in a custom taxonomy
            } else if(!empty($cat_id)) {
                  
                echo \'<li class=\"item-cat item-cat-\' . $cat_id . \' item-cat-\' . $cat_nicename . \'\"><a class=\"bread-cat bread-cat-\' . $cat_id . \' bread-cat-\' . $cat_nicename . \'\" href=\"\' . $cat_link . \'\" title=\"\' . $cat_name . \'\">\' . $cat_name . \'</a></li>\';
                echo \'<li class=\"separator\"> \' . $separator . \' </li>\';
                echo \'<li class=\"item-current item-\' . $post->ID . \'\"><strong class=\"bread-current bread-\' . $post->ID . \'\" title=\"\' . get_the_title() . \'\">\' . get_the_title() . \'</strong></li>\';
              
            } else {
                  
                echo \'<li class=\"item-current item-\' . $post->ID . \'\"><strong class=\"bread-current bread-\' . $post->ID . \'\" title=\"\' . get_the_title() . \'\">\' . get_the_title() . \'</strong></li>\';
                  
            }
              
        } else if ( is_category() ) {
               
            // Category page
            echo \'<li class=\"item-current item-cat\"><strong class=\"bread-current bread-cat\">\' . single_cat_title(\'\', false) . \'</strong></li>\';
               
        } else if ( is_page() ) {
               
            // Standard page
            if( $post->post_parent ){
                   
                // Get parents 
                $anc = get_post_ancestors( $post->ID );
                   
                // Get parents order
                $anc = array_reverse($anc);
                   
                // Parent pages
                if ( !isset( $parents ) ) $parents = null;
                foreach ( $anc as $ancestor ) {
                    $parents .= \'<li class=\"item-parent item-parent-\' . $ancestor . \'\"><a class=\"bread-parent bread-parent-\' . $ancestor . \'\" href=\"\' . get_permalink($ancestor) . \'\" title=\"\' . get_the_title($ancestor) . \'\">\' . get_the_title($ancestor) . \'</a></li>\';
                    $parents .= \'<li class=\"separator separator-\' . $ancestor . \'\"> \' . $separator . \' </li>\';
                }
                   
                // Render parent pages
                echo $parents;
                   
                // Active page
                echo \'<li class=\"item-current item-\' . $post->ID . \'\"><strong title=\"\' . get_the_title() . \'\"> \' . get_the_title() . \'</strong></li>\';
                   
            } else {
                   
                // Just display active page if not parents pages
                echo \'<li class=\"item-current item-\' . $post->ID . \'\"><strong class=\"bread-current bread-\' . $post->ID . \'\"> \' . get_the_title() . \'</strong></li>\';
                   
            }
               
        } else if ( is_tag() ) { // Tag page
               
            // Tag information
            $term_id        = get_query_var(\'tag_id\');
            $taxonomy       = \'post_tag\';
            $args           = \'include=\' . $term_id;
            $terms          = get_terms( $taxonomy, $args );
            $get_term_id    = $terms[0]->term_id;
            $get_term_slug  = $terms[0]->slug;
            $get_term_name  = $terms[0]->name;
               
            // Return tag name
            echo \'<li class=\"item-current item-tag-\' . $get_term_id . \' item-tag-\' . $get_term_slug . \'\"><strong class=\"bread-current bread-tag-\' . $get_term_id . \' bread-tag-\' . $get_term_slug . \'\">\' . $get_term_name . \'</strong></li>\';
           
        } elseif ( is_day() ) { // Day archive page
               
            // Year link
            echo \'<li class=\"item-year item-year-\' . get_the_time(\'Y\') . \'\"><a class=\"bread-year bread-year-\' . get_the_time(\'Y\') . \'\" href=\"\' . get_year_link( get_the_time(\'Y\') ) . \'\" title=\"\' . get_the_time(\'Y\') . \'\">\' . get_the_time(\'Y\') . \' Archives</a></li>\';
            echo \'<li class=\"separator separator-\' . get_the_time(\'Y\') . \'\"> \' . $separator . \' </li>\';
               
            // Month link
            echo \'<li class=\"item-month item-month-\' . get_the_time(\'m\') . \'\"><a class=\"bread-month bread-month-\' . get_the_time(\'m\') . \'\" href=\"\' . get_month_link( get_the_time(\'Y\'), get_the_time(\'m\') ) . \'\" title=\"\' . get_the_time(\'M\') . \'\">\' . get_the_time(\'M\') . \' Archives</a></li>\';
            echo \'<li class=\"separator separator-\' . get_the_time(\'m\') . \'\"> \' . $separator . \' </li>\';
               
            // Day display
            echo \'<li class=\"item-current item-\' . get_the_time(\'j\') . \'\"><strong class=\"bread-current bread-\' . get_the_time(\'j\') . \'\"> \' . get_the_time(\'jS\') . \' \' . get_the_time(\'M\') . \' Archives</strong></li>\';
               
        } else if ( is_month() ) { // Month Archive
               
            // Year link
            echo \'<li class=\"item-year item-year-\' . get_the_time(\'Y\') . \'\"><a class=\"bread-year bread-year-\' . get_the_time(\'Y\') . \'\" href=\"\' . get_year_link( get_the_time(\'Y\') ) . \'\" title=\"\' . get_the_time(\'Y\') . \'\">\' . get_the_time(\'Y\') . \' Archives</a></li>\';
            echo \'<li class=\"separator separator-\' . get_the_time(\'Y\') . \'\"> \' . $separator . \' </li>\';
               
            // Month display
            echo \'<li class=\"item-month item-month-\' . get_the_time(\'m\') . \'\"><strong class=\"bread-month bread-month-\' . get_the_time(\'m\') . \'\" title=\"\' . get_the_time(\'M\') . \'\">\' . get_the_time(\'M\') . \' Archives</strong></li>\';
               
        } else if ( is_year() ) { // Display year archive
 
            echo \'<li class=\"item-current item-current-\' . get_the_time(\'Y\') . \'\"><strong class=\"bread-current bread-current-\' . get_the_time(\'Y\') . \'\" title=\"\' . get_the_time(\'Y\') . \'\">\' . get_the_time(\'Y\') . \' Archives</strong></li>\';
               
        } else if ( is_author() ) { // Author archive
               
            // Get the author information
            global $author;
            $userdata = get_userdata( $author );
               
            // Display author name
            echo \'<li class=\"item-current item-current-\' . $userdata->user_nicename . \'\"><strong class=\"bread-current bread-current-\' . $userdata->user_nicename . \'\" title=\"\' . $userdata->display_name . \'\">\' . \'Author: \' . $userdata->display_name . \'</strong></li>\';
           
        } else if ( get_query_var(\'paged\') ) {
               
            // Paginated archives
            echo \'<li class=\"item-current item-current-\' . get_query_var(\'paged\') . \'\"><strong class=\"bread-current bread-current-\' . get_query_var(\'paged\') . \'\" title=\"Page \' . get_query_var(\'paged\') . \'\">\'.__(\'Page\') . \' \' . get_query_var(\'paged\') . \'</strong></li>\';
               
        } else if ( is_search() ) {
           
            // Search results page
            echo \'<li class=\"item-current item-current-\' . get_search_query() . \'\"><strong class=\"bread-current bread-current-\' . get_search_query() . \'\" title=\"Search results for: \' . get_search_query() . \'\">Search results for: \' . get_search_query() . \'</strong></li>\';
           
        } elseif ( is_404() ) {
               
            // 404 page
            echo \'<li>\' . \'Error 404\' . \'</li>\';
        }
 
        echo \'</ul>\';  
    }
}

将调用代码放到主题模板适当位置比如header.php中：

<?php if (function_exists(\'tsh_wp_custom_breadcrumbs\')) tsh_wp_custom_breadcrumbs(); ?>

配套CSS样式：

#tsh_breadcrumbs .separator{
    font-size:20px;
    color:#ccc;
    font-weight:100;
}
#tsh_breadcrumbs{
    overflow:hidden;
    text-align: center;
    list-style:none;
    margin:11px 0;
}
#tsh_breadcrumbs li{
    margin-right:14px;
    display:inline-block;
    vertical-align:middle;
}

温馨提示：本文最后更新于2022/10/20 04:48:01。若文章内容或图片失效，请留言或联系站长反馈！

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