我想在我的WP面包屑中添加“类别”

Question

我有一个优质的WordPress主题，默认情况下有面包屑，但在帖子页面上没有显示类别（和子类别）项目： Home＆gt;分类＆gt;子类别＆gt;帖子标题

相反它只是显示如下： Home＆gt;帖子标题

这是处理面包屑的功能：

（我标记了我认为对此符号很重要的代码部分，以节省您的时间：==========＆gt;＆gt;）

// BREADCRUMBS
if ( ! function_exists( 'ishyoboy_get_breadcrumbs' ) ) {
    function ishyoboy_get_breadcrumbs() {

        global $ish_options, $ish_woo_id;

        $return = '';

        $return .= '<div class="ish-pb-breadcrumbs"><div><div>' . "\n";

        if ( ! is_front_page() ) {
            if ( function_exists('is_woocommerce') ) {
                if ( !is_woocommerce() && !is_woocommerce_page() ){
                    $return .= '<a class="ish-pb-breadcrumbs-home" href="';
                    $return .= home_url();
                    $return .= '">';
                    $return .= '<span>' . __( 'Home', 'ishyoboy' ) . '</span>';
                    $return .= "</a> &gt; ";
                }

            }
            else{
                $return .= '<a class="ish-pb-breadcrumbs-home" href="';
                $return .= home_url();
                $return .= '">';
                $return .= '<span>' . __( 'Home', 'ishyoboy' ) . '</span>';
                $return .= "</a> &gt; ";
            }

        }
        else {
            $return .= '<span class="ish-pb-breadcrumbs-home">';
            $return .= '<span>' . __( 'Home', 'ishyoboy' ) . '</span>';
            $return .= "</span>";
        }

        if ( !is_front_page() && is_home() ) {
            global $page;
            $return .= $page->post_title;
        }

        if ( is_archive() && 'post' == get_post_type() && ! is_category() && ( !function_exists('is_woocommerce') || !is_woocommerce() )  ) {
            $hpage = get_page( get_option( 'page_for_posts' ) );
            if ( 'page' == get_option('show_on_front') && isset($hpage) && '' != $hpage ){
                $return .=  get_page_parents($hpage->ID, TRUE, ' &gt; ', FALSE );
            }
            if ( is_day() ) :
                $return .= sprintf( __( 'Daily Archives: %s', 'ishyoboy' ), '<span>' . get_the_date() . '</span>' );
            elseif ( is_month() ) :
                $return .= sprintf( __( 'Monthly Archives: %s', 'ishyoboy' ), '<span>' . get_the_date( _x( 'F Y', 'monthly archives date format', 'ishyoboy' ) ) . '</span>' );
            elseif ( is_year() ) :
                $return .= sprintf( __( 'Yearly Archives: %s', 'ishyoboy' ), '<span>' . get_the_date( _x( 'Y', 'yearly archives date format', 'ishyoboy' ) ) . '</span>' );
            else :
                $return .= __( 'Archives', 'ishyoboy' );
            endif;
        }
        else if ( is_archive() && 'post' != get_post_type() && ( !function_exists('is_woocommerce') || !is_woocommerce() )  ) {

            $type = get_post_type( get_the_ID() );

            $obj = get_post_type_object( $type );
            if ( is_object( $obj ) ){
                $return .= $obj->labels->name;
            }

        }

        if ( (is_category() || is_single()) && ( ( !function_exists('is_woocommerce_page') || !function_exists('is_woocommerce' ) ) || ( !is_woocommerce() && !is_woocommerce_page() ) ) ) {

            $post_id = ish_get_the_ID();
            $post_type = get_post_type();

            switch ($post_type){
                case 'portfolio-post' :
                    $terms = get_the_terms($post_id, 'portfolio-category' );
                    $term = ( ! empty( $terms ) ) ? array_pop($terms) : '';

                    if (isset($ish_options['page_for_custom_post_type_portfolio-post']) && '-1' != $ish_options['page_for_custom_post_type_portfolio-post']){

                        $portfolio_page = get_page($ish_options['page_for_custom_post_type_portfolio-post']);
                        $separator = " &gt; ";
                        $return .= '<a href="' . get_page_link( $ish_options['page_for_custom_post_type_portfolio-post'] ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" , 'ishyoboy' ), $portfolio_page->post_title ) ) . '">'.$portfolio_page->post_title.'</a>' . $separator;
                    }

                    if ( ! empty( $term ) ){
                        $return .= get_term_parents($term->term_id, 'portfolio-category', TRUE, ' &gt; ', FALSE );
                    }
                    break;

// from here ==========>>

                case 'post' :

                    if ( is_category() ){
                        global  $cat;
                        $category = get_category($cat);
                        if ( $category->parent && ( $category->parent != $category->term_id ) ){
                            $return .= get_category_parents($category->parent, TRUE, ' &gt; ', FALSE );
                        }
                        $return .= single_cat_title('', false);
                    }
                    else{
                        $category = get_the_category();
                        if ( is_object( $category ) ){
                            $ID = $category[0]->cat_ID;
                            $return .= get_category_parents($ID, TRUE, ' &gt; ', FALSE );
                        }
                    }
                    break;

// to here ==========>>

                default :
                    $type = get_post_type( get_the_ID() );

                    $obj = get_post_type_object( $type );
                    if ( is_object( $obj ) ){
                        $return .= '<a href="' . get_post_type_archive_link( $type ) .'">' . $obj->labels->name . '</a> &gt; ';
                    }

            }
        }
        else if ( ( function_exists('is_woocommerce_page') && function_exists('is_woocommerce') ) && (is_woocommerce() || is_woocommerce_page() )){
            ob_start();
            woocommerce_breadcrumb(array(
                'delimiter'   => ' &gt; ',
                'wrap_before' => '',
                'wrap_after'  => '',
                'before'      => '',
                'after'       => '',
                'home'        => '<span class="ish-pb-breadcrumbs-home"><span>' . _x( 'Home', 'breadcrumb', 'woocommerce' ) . '</span></span>',
            ));
            $return .= ob_get_contents();
            ob_end_clean();
            ob_end_flush();
        }
        else if (is_tax()){
            if (is_tax('portfolio-category')){

                $current_term = get_queried_object();

                if ( !empty($current_term) ){
                    //var_dump($current_term);

                    if (isset($ish_options['page_for_custom_post_type_portfolio-post']) && '-1' != $ish_options['page_for_custom_post_type_portfolio-post']){

                        $portfolio_page = get_page($ish_options['page_for_custom_post_type_portfolio-post']);
                        $separator = " &gt; ";
                        $return .= '<a href="' . get_page_link( $ish_options['page_for_custom_post_type_portfolio-post'] ) . '" title="' . esc_attr( sprintf( __( "View all posts in %s" , 'ishyoboy' ), $portfolio_page->post_title ) ) . '">'.$portfolio_page->post_title.'</a>' . $separator;
                    }

                    if ($current_term->parent != 0 ){
                        $return .= get_term_parents($current_term->parent, 'portfolio-category', TRUE, ' &gt; ', FALSE );
                    }

                    $return .= $current_term->name;
                }
            }
        }
        else if (is_page()){
            global $post;

            if ($post->post_parent != 0 ){
                $return .= get_page_parents($post->post_parent, TRUE, ' &gt; ', FALSE );
            }
        }

        if (!function_exists('is_woocommerce_page') || !is_woocommerce_page()){
            if(is_single()) {$return .= get_the_title();}
            if(is_page()) {
                global $post;
                $frontpage = get_option('page_on_front');

                if ( $frontpage && $frontpage == $post->ID){
                    /*$return .= '<a class="home" href="';
                    $return .= home_url();
                    $return .= '">';
                    $return .= '<span>' . __( 'Home', 'ishyoboy' ) . '</span>';
                    $return .= "</a>";*/
                } else {
                    $return .= get_the_title();
                }
            }
            if(is_tag()){ $return .= __( 'Tag: ', 'ishyoboy' ) . single_tag_title('',FALSE); }
            if(is_404()){ $return .= __( '404 - Page not Found', 'ishyoboy' ); }
            if(is_search()){ $return .= __( 'Search', 'ishyoboy' ); }
            if(is_year()){ $return .= get_the_time('Y'); };
        }

        $return .= '</div></div></div>';

        return $return;
    }
}

if ( !function_exists('the_post_thumbnail_caption') ) {
    function the_post_thumbnail_caption(){

        $thumb = get_post_thumbnail_id();

        if ( ! empty( $thumb ) ){
            $thumb_object = get_post( $thumb );
            if ( ! empty( $thumb_object ) ) {
                echo '<div class="wp-caption"><p class="wp-caption-text">' . $thumb_object->post_excerpt . '</p></div>';
            }
        }

    }
}

if ( !function_exists('get_the_post_thumbnail_caption') ) {
    function get_the_post_thumbnail_caption(){

        $thumb = get_post_thumbnail_id();

        if ( ! empty( $thumb ) )
            return get_post( $thumb )->post_excerpt;

        return null;
    }
}

if ( ! function_exists( 'ishyoboy_activate_fancybox_on_blog_single' ) ) {
    function ishyoboy_activate_fancybox_on_blog_single() {

        if ( is_singular() && !is_singular( 'product' ) ){
            ?>
            <script type="text/javascript">
                jQuery(document).ready(function($){
                    var thumbnails = jQuery("a:has(img)").not(".nolightbox").filter( function() { return /\.(jpe?g|png|gif|bmp)$/i.test(jQuery(this).attr('href')) });

                    if ( thumbnails.length > 0){
                        thumbnails.addClass( 'openfancybox-image' ).attr( 'rel', 'fancybox-post-image-<?php the_ID() ?>');
                    }
                });
            </script>
        <?php
        }

    }
}
add_action( 'wp_head', 'ishyoboy_activate_fancybox_on_blog_single' );


if ( ! function_exists( 'ishyoboy_dummy_functions' ) ) {
    function ishyoboy_dummy_functions() {

        if ( false ) {
            posts_nav_link();
            wp_link_pages();
            $args = '';
            add_theme_support( 'custom-header', $args );
            add_theme_support( 'custom-background', $args );
        }

    }
}

然后我对代码产生了所需的更改 - 类别出现在面包屑中： Home＆gt;分类＆gt;子类别＆gt;帖子标题

但是在类别存档页面上，面包屑看起来像这样： Home＆gt;分类＆gt;分类

实例：http://pigtelligent.com/science/

我在上述代码中所做的更改：

        case 'post' :
            $terms = get_the_terms($post_id, 'category' );
            $term = ( ! empty( $terms ) ) ? array_pop($terms) : '';
            if ( ! empty( $term ) ){
                $return .= get_term_parents($term->term_id, 'category', TRUE, ' > ', FALSE );
            }

我知道对于聪明的人来说这应该很容易，但是我花了一整天的时间试图解决这个问题，所以你能帮助我吗？ ：）

Answer 1

类别可能会变得棘手，因为帖子可能有多个类别，而类别登录页面可以访问很多可能会产生误导的元数据。确保您已查看过该手抄本的Template Hierarchy页面，并且您已经深入了解了WP如何处理分类法。

使用What The File找出您实际所在的模板，因为您可能不在类别页面上，导致is_category()返回false。您可以使用单个（如if语句包含您指出的逻辑正在检查is_category() || is_single()），或者您可能需要添加is_archive()的检查。

我最好的建议是先判断你是否在某个类别页面上，然后停止所有额外的逻辑并吐出该类别的名称。我知道，没有太多的帮助，但希望能指出你正确的方向

Answer 2

function the_breadcrumb() {
    global $post;
    echo '<ul id="breadcrumbs">';
    if (!is_home()) {
        echo '<li><a href="';
        echo get_option('home');
        echo '">';
        echo 'Home';
        echo '</a></li><li class="separator"> / </li>';
        if (is_category() || is_single()) {
            echo '<li>';
            the_category(' </li><li class="separator"> / </li><li> ');
            if (is_single()) {
                echo '</li><li class="separator"> / </li><li>';
                the_title();
                echo '</li>';
            }
        } elseif (is_page()) {
            if($post->post_parent){
                $anc = get_post_ancestors( $post->ID );
                $title = get_the_title();
                foreach ( $anc as $ancestor ) {
                    $output = '<li><a href="'.get_permalink($ancestor).'" title="'.get_the_title($ancestor).'">'.get_the_title($ancestor).'</a></li> <li class="separator">/</li>';
                }
                echo $output;
                echo '<strong title="'.$title.'"> '.$title.'</strong>';
            } else {
                echo '<li><strong> '.get_the_title().'</strong></li>';
            }
        }
    }
    elseif (is_tag()) {single_tag_title();}
    elseif (is_day()) {echo"<li>Archive for "; the_time('F jS, Y'); echo'</li>';}
    elseif (is_month()) {echo"<li>Archive for "; the_time('F, Y'); echo'</li>';}
    elseif (is_year()) {echo"<li>Archive for "; the_time('Y'); echo'</li>';}
    elseif (is_author()) {echo"<li>Author Archive"; echo'</li>';}
    elseif (isset($_GET['paged']) && !empty($_GET['paged'])) {echo "<li>Blog Archives"; echo'</li>';}
    elseif (is_search()) {echo"<li>Search Results"; echo'</li>';}
    echo '</ul>';
}
?>

使用：<?php the_breadcrumb(); ?>