diff options
Diffstat (limited to 'plugins/jetpack/modules/theme-tools/site-breadcrumbs.php')
-rw-r--r-- | plugins/jetpack/modules/theme-tools/site-breadcrumbs.php | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/plugins/jetpack/modules/theme-tools/site-breadcrumbs.php b/plugins/jetpack/modules/theme-tools/site-breadcrumbs.php new file mode 100644 index 00000000..2f266738 --- /dev/null +++ b/plugins/jetpack/modules/theme-tools/site-breadcrumbs.php @@ -0,0 +1,79 @@ +<?php +/** + * Plugin Name: Site Breadcrumbs + * Plugin URI: https://wordpress.com + * Description: Quickly add breadcrumbs to the single view of a hierarchical post type or a hierarchical taxonomy. + * Author: Automattic + * Version: 1.0 + * Author URI: https://wordpress.com + * License: GPL2 or later + */ + +function jetpack_breadcrumbs() { + $taxonomy = is_category() ? 'category' : get_query_var( 'taxonomy' ); + $is_taxonomy_hierarchical = is_taxonomy_hierarchical( $taxonomy ); + + $post_type = is_page() ? 'page' : get_query_var( 'post_type' ); + $is_post_type_hierarchical = is_post_type_hierarchical( $post_type ); + + if ( ! ( $is_post_type_hierarchical || $is_taxonomy_hierarchical ) || is_front_page() ) { + return; + } + + $breadcrumb = ''; + + if ( $is_post_type_hierarchical ) { + $post_id = get_queried_object_id(); + $ancestors = array_reverse( get_post_ancestors( $post_id ) ); + if ( $ancestors ) { + foreach ( $ancestors as $ancestor ) { + $breadcrumb .= '<span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="' . esc_url( get_permalink( $ancestor ) ) . '" itemprop="item"><span itemprop="name">' . esc_html( get_the_title( $ancestor ) ) . '</span></a></span>'; + } + } + $breadcrumb .= '<span class="current-page" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><span itemprop="name">' . esc_html( get_the_title( $post_id ) ) . '</span></span>'; + } elseif ( $is_taxonomy_hierarchical ) { + $current = get_term( get_queried_object_id(), $taxonomy ); + + if ( is_wp_error( $current ) ) { + return; + } + + if ( $current->parent ) { + $breadcrumb = jetpack_get_term_parents( $current->parent, $taxonomy ); + } + + $breadcrumb .= '<span class="current-category" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><span itemprop="name">' . esc_html( $current->name ) . '</span></span>'; + } + + $home = '<span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="' . esc_url( home_url( '/' ) ) . '" class="home-link" itemprop="item" rel="home"><span itemprop="name">' . esc_html__( 'Home', 'jetpack' ) . '</span></a></span>'; + + echo '<nav class="entry-breadcrumbs" itemscope itemtype="https://schema.org/BreadcrumbList">' . $home . $breadcrumb . '</nav>'; +} + +/** + * Return the parents for a given taxonomy term ID. + * + * @param int $term Taxonomy term whose parents will be returned. + * @param string $taxonomy Taxonomy name that the term belongs to. + * @param array $visited Terms already added to prevent duplicates. + * + * @return string A list of links to the term parents. + */ +function jetpack_get_term_parents( $term, $taxonomy, $visited = array() ) { + $parent = get_term( $term, $taxonomy ); + + if ( is_wp_error( $parent ) ) { + return $parent; + } + + $chain = ''; + + if ( $parent->parent && ( $parent->parent != $parent->term_id ) && ! in_array( $parent->parent, $visited ) ) { + $visited[] = $parent->parent; + $chain .= jetpack_get_term_parents( $parent->parent, $taxonomy, $visited ); + } + + $chain .= '<a href="' . esc_url( get_category_link( $parent->term_id ) ) . '">' . $parent->name . '</a>'; + + return $chain; +} |