Created
March 25, 2012 05:40
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| <?php /** | |
| * Breadcrumb Trail - A breadcrumb menu script for WordPress. | |
| * | |
| * Breadcrumb Trail is a script for showing a breadcrumb trail for any type of page. It tries to anticipate | |
| * any type of structure and display the best possible trail that matches your site's permalink structure. | |
| * While not perfect, it attempts to fill in the gaps left by many other breadcrumb scripts. | |
| * | |
| * This program is free software; you can redistribute it and/or modify it under the terms of the GNU | |
| * General Public License version 2, as published by the Free Software Foundation. You may NOT assume | |
| * that you can use any other version of the GPL. | |
| * | |
| * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without | |
| * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| * | |
| * @package BreadcrumbTrail | |
| * @version 0.5.0 | |
| * @author Justin Tadlock <[email protected]> | |
| * @copyright Copyright (c) 2008 - 2012, Justin Tadlock | |
| * @link http://justintadlock.com/archives/2009/04/05/breadcrumb-trail-wordpress-plugin | |
| * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html | |
| */ | |
| /** | |
| * Shows a breadcrumb for all types of pages. This function is formatting the final output of the | |
| * breadcrumb trail. The breadcrumb_trail_get_items() function returns the items and this function | |
| * formats those items. | |
| * | |
| * @since 0.1.0 | |
| * @access public | |
| * @param array $args Mixed arguments for the menu. | |
| * @return string Output of the breadcrumb menu. | |
| */ | |
| function breadcrumb_trail( $args = array() ) { | |
| /* Create an empty variable for the breadcrumb. */ | |
| $breadcrumb = ''; | |
| /* Set up the default arguments for the breadcrumb. */ | |
| $defaults = array( | |
| 'separator' => ' › ', | |
| 'before' => __( '', 'breadcrumb-trail' ), | |
| 'after' => false, | |
| 'front_page' => false, | |
| 'show_home' => __( 'Home', 'breadcrumb-trail' ), | |
| 'echo' => true | |
| ); | |
| /* Allow singular post views to have a taxonomy's terms prefixing the trail. */ | |
| if ( is_singular() ) { | |
| $post = get_queried_object(); | |
| $defaults["singular_{$post->post_type}_taxonomy"] = false; | |
| } | |
| /* Apply filters to the arguments. */ | |
| $args = apply_filters( 'breadcrumb_trail_args', $args ); | |
| /* Parse the arguments and extract them for easy variable naming. */ | |
| $args = wp_parse_args( $args, $defaults ); | |
| /* Get the trail items. */ | |
| $trail = breadcrumb_trail_get_items( $args ); | |
| /* Connect the breadcrumb trail if there are items in the trail. */ | |
| if ( !empty( $trail ) && is_array( $trail ) ) { | |
| /* Open the breadcrumb trail containers. */ | |
| $breadcrumb = '<div id="breadcrumbs" xmlns:v="http://rdf.data-vocabulary.org/#"><div class="breadcrumb-trail">'; | |
| /* If $before was set, wrap it in a container. */ | |
| $breadcrumb .= ( !empty( $args['before'] ) ? '<span class="trail-before">' . $args['before'] . '</span> ' : '' ); | |
| /* Wrap the $trail['trail_end'] value in a container. */ | |
| if ( !empty( $trail['trail_end'] ) ) | |
| $trail['trail_end'] = '<span class="trail-end">' . $trail['trail_end'] . '</span>'; | |
| /* Format the separator. */ | |
| $separator = ( !empty( $args['separator'] ) ? '<span class="sep">' . $args['separator'] . '</span>' : '<span class="sep">/</span>' ); | |
| /* Join the individual trail items into a single string. */ | |
| $breadcrumb .= join( " {$separator} ", $trail ); | |
| /* If $after was set, wrap it in a container. */ | |
| $breadcrumb .= ( !empty( $args['after'] ) ? ' <span class="trail-after">' . $args['after'] . '</span>' : '' ); | |
| /* Close the breadcrumb trail containers. */ | |
| $breadcrumb .= '</div></div>'; | |
| } | |
| /* Allow developers to filter the breadcrumb trail HTML. */ | |
| $breadcrumb = apply_filters( 'breadcrumb_trail', $breadcrumb, $args ); | |
| /* Output the breadcrumb. */ | |
| if ( $args['echo'] ) | |
| echo $breadcrumb; | |
| else | |
| return $breadcrumb; | |
| } | |
| /** | |
| * Gets the items for the breadcrumb trail. This is the heart of the script. It checks the current page | |
| * being viewed and decided based on the information provided by WordPress what items should be | |
| * added to the breadcrumb trail. | |
| * | |
| * @since 0.4.0 | |
| * @todo Build in caching based on the queried object ID. | |
| * @access private | |
| * @param array $args Mixed arguments for the menu. | |
| * @return array List of items to be shown in the trail. | |
| */ | |
| function breadcrumb_trail_get_items( $args = array() ) { | |
| global $wp_rewrite; | |
| /* Set up an empty trail array and empty path. */ | |
| $trail = array(); | |
| $path = ''; | |
| /* If $show_home is set and we're not on the front page of the site, link to the home page. */ | |
| if ( !is_front_page() && $args['show_home'] ) | |
| $trail[] = '<span typeof="v:Breadcrumb">' . | |
| '<a rel="v:url" property="v:title" href="' . home_url() . '" title="' . esc_attr( get_bloginfo( 'name' ) ) . '" rel="home" class="trail-begin">' . $args['show_home'] . '</a>'.'</span>'; | |
| /* If bbPress is installed and we're on a bbPress page. */ | |
| if ( function_exists( 'is_bbpress' ) && is_bbpress() ) { | |
| $trail = array_merge( $trail, breadcrumb_trail_get_bbpress_items() ); | |
| } | |
| /* If viewing the front page of the site. */ | |
| elseif ( is_front_page() ) { | |
| if ( $args['show_home'] && $args['front_page'] ) | |
| $trail['trail_end'] = "{$args['show_home']}"; | |
| } | |
| /* If viewing the "home"/posts page. */ | |
| elseif ( is_home() ) { | |
| $home_page = get_page( get_queried_object_id() ); | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( $home_page->post_parent, '' ) ); | |
| $trail['trail_end'] = get_the_title( $home_page->ID ); | |
| } | |
| /* If viewing a singular post (page, attachment, etc.). */ | |
| elseif ( is_singular() ) { | |
| /* Get singular post variables needed. */ | |
| $post = get_queried_object(); | |
| $post_id = absint( get_queried_object_id() ); | |
| $post_type = $post->post_type; | |
| $parent = absint( $post->post_parent ); | |
| /* Get the post type object. */ | |
| $post_type_object = get_post_type_object( $post_type ); | |
| /* If viewing a singular 'post'. */ | |
| if ( 'post' == $post_type ) { | |
| /* If $front has been set, add it to the $path. */ | |
| $path .= trailingslashit( $wp_rewrite->front ); | |
| /* If there's a path, check for parents. */ | |
| if ( !empty( $path ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* Map the permalink structure tags to actual links. */ | |
| $trail = array_merge( $trail, breadcrumb_trail_map_rewrite_tags( $post_id, get_option( 'permalink_structure' ), $args ) ); | |
| } | |
| /* If viewing a singular 'attachment'. */ | |
| elseif ( 'attachment' == $post_type ) { | |
| /* If $front has been set, add it to the $path. */ | |
| $path .= trailingslashit( $wp_rewrite->front ); | |
| /* If there's a path, check for parents. */ | |
| if ( !empty( $path ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* Map the post (parent) permalink structure tags to actual links. */ | |
| $trail = array_merge( $trail, breadcrumb_trail_map_rewrite_tags( $post->post_parent, get_option( 'permalink_structure' ), $args ) ); | |
| } | |
| /* If a custom post type, check if there are any pages in its hierarchy based on the slug. */ | |
| elseif ( 'page' !== $post_type ) { | |
| /* If $front has been set, add it to the $path. */ | |
| if ( $post_type_object->rewrite['with_front'] && $wp_rewrite->front ) | |
| $path .= trailingslashit( $wp_rewrite->front ); | |
| /* If there's a slug, add it to the $path. */ | |
| if ( !empty( $post_type_object->rewrite['slug'] ) ) | |
| $path .= $post_type_object->rewrite['slug']; | |
| /* If there's a path, check for parents. */ | |
| if ( !empty( $path ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* If there's an archive page, add it to the trail. */ | |
| if ( !empty( $post_type_object->has_archive ) ) | |
| $trail[] = '<a href="' . get_post_type_archive_link( $post_type ) . '" title="' . esc_attr( $post_type_object->labels->name ) . '">' . $post_type_object->labels->name . '</a>'; | |
| } | |
| /* If the post type path returns nothing and there is a parent, get its parents. */ | |
| if ( ( empty( $path ) && 0 !== $parent ) || ( 'attachment' == $post_type ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( $parent, '' ) ); | |
| /* Or, if the post type is hierarchical and there's a parent, get its parents. */ | |
| elseif ( 0 !== $parent && is_post_type_hierarchical( $post_type ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( $parent, '' ) ); | |
| /* Display terms for specific post type taxonomy if requested. */ | |
| if ( !empty( $args["singular_{$post_type}_taxonomy"] ) && $terms = get_the_term_list( $post_id, $args["singular_{$post_type}_taxonomy"], '', ', ', '' ) ) | |
| $trail[] = $terms; | |
| /* End with the post title. */ | |
| $post_title = single_post_title( '', false ); | |
| if ( !empty( $post_title ) ) | |
| $trail['trail_end'] = $post_title; | |
| } | |
| /* If we're viewing any type of archive. */ | |
| elseif ( is_archive() ) { | |
| /* If viewing a taxonomy term archive. */ | |
| if ( is_tax() || is_category() || is_tag() ) { | |
| /* Get some taxonomy and term variables. */ | |
| $term = get_queried_object(); | |
| $taxonomy = get_taxonomy( $term->taxonomy ); | |
| /* Get the path to the term archive. Use this to determine if a page is present with it. */ | |
| if ( is_category() ) | |
| $path = get_option( 'category_base' ); | |
| elseif ( is_tag() ) | |
| $path = get_option( 'tag_base' ); | |
| else { | |
| if ( $taxonomy->rewrite['with_front'] && $wp_rewrite->front ) | |
| $path = trailingslashit( $wp_rewrite->front ); | |
| $path .= $taxonomy->rewrite['slug']; | |
| } | |
| /* Get parent pages by path if they exist. */ | |
| if ( $path ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* If the taxonomy is hierarchical, list its parent terms. */ | |
| if ( is_taxonomy_hierarchical( $term->taxonomy ) && $term->parent ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_term_parents( $term->parent, $term->taxonomy ) ); | |
| /* Add the term name to the trail end. */ | |
| $trail['trail_end'] = single_term_title( '', false ); | |
| } | |
| /* If viewing a post type archive. */ | |
| elseif ( is_post_type_archive() ) { | |
| /* Get the post type object. */ | |
| $post_type_object = get_post_type_object( get_query_var( 'post_type' ) ); | |
| /* If $front has been set, add it to the $path. */ | |
| if ( $post_type_object->rewrite['with_front'] && $wp_rewrite->front ) | |
| $path .= trailingslashit( $wp_rewrite->front ); | |
| /* If there's a slug, add it to the $path. */ | |
| if ( !empty( $post_type_object->rewrite['slug'] ) ) | |
| $path .= $post_type_object->rewrite['slug']; | |
| /* If there's a path, check for parents. */ | |
| if ( !empty( $path ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* Add the post type [plural] name to the trail end. */ | |
| $trail['trail_end'] = $post_type_object->labels->name; | |
| } | |
| /* If viewing an author archive. */ | |
| elseif ( is_author() ) { | |
| /* If $front has been set, add it to $path. */ | |
| if ( !empty( $wp_rewrite->front ) ) | |
| $path .= trailingslashit( $wp_rewrite->front ); | |
| /* If an $author_base exists, add it to $path. */ | |
| if ( !empty( $wp_rewrite->author_base ) ) | |
| $path .= $wp_rewrite->author_base; | |
| /* If $path exists, check for parent pages. */ | |
| if ( !empty( $path ) ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $path ) ); | |
| /* Add the author's display name to the trail end. */ | |
| $trail['trail_end'] = get_the_author_meta( 'display_name', get_query_var( 'author' ) ); | |
| } | |
| /* If viewing a time-based archive. */ | |
| elseif ( is_time() ) { | |
| if ( get_query_var( 'minute' ) && get_query_var( 'hour' ) ) | |
| $trail['trail_end'] = get_the_time( __( 'g:i a', 'breadcrumb-trail' ) ); | |
| elseif ( get_query_var( 'minute' ) ) | |
| $trail['trail_end'] = sprintf( __( 'Minute %1$s', 'breadcrumb-trail' ), get_the_time( __( 'i', 'breadcrumb-trail' ) ) ); | |
| elseif ( get_query_var( 'hour' ) ) | |
| $trail['trail_end'] = get_the_time( __( 'g a', 'breadcrumb-trail' ) ); | |
| } | |
| /* If viewing a date-based archive. */ | |
| elseif ( is_date() ) { | |
| /* If $front has been set, check for parent pages. */ | |
| if ( $wp_rewrite->front ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( '', $wp_rewrite->front ) ); | |
| if ( is_day() ) { | |
| $trail[] = '<a href="' . get_year_link( get_the_time( 'Y' ) ) . '" title="' . get_the_time( esc_attr__( 'Y', 'breadcrumb-trail' ) ) . '">' . get_the_time( __( 'Y', 'breadcrumb-trail' ) ) . '</a>'; | |
| $trail[] = '<a href="' . get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) ) . '" title="' . get_the_time( esc_attr__( 'F', 'breadcrumb-trail' ) ) . '">' . get_the_time( __( 'F', 'breadcrumb-trail' ) ) . '</a>'; | |
| $trail['trail_end'] = get_the_time( __( 'd', 'breadcrumb-trail' ) ); | |
| } | |
| elseif ( get_query_var( 'w' ) ) { | |
| $trail[] = '<a href="' . get_year_link( get_the_time( 'Y' ) ) . '" title="' . get_the_time( esc_attr__( 'Y', 'breadcrumb-trail' ) ) . '">' . get_the_time( __( 'Y', 'breadcrumb-trail' ) ) . '</a>'; | |
| $trail['trail_end'] = sprintf( __( 'Week %1$s', 'breadcrumb-trail' ), get_the_time( esc_attr__( 'W', 'breadcrumb-trail' ) ) ); | |
| } | |
| elseif ( is_month() ) { | |
| $trail[] = '<a href="' . get_year_link( get_the_time( 'Y' ) ) . '" title="' . get_the_time( esc_attr__( 'Y', 'breadcrumb-trail' ) ) . '">' . get_the_time( __( 'Y', 'breadcrumb-trail' ) ) . '</a>'; | |
| $trail['trail_end'] = get_the_time( __( 'F', 'breadcrumb-trail' ) ); | |
| } | |
| elseif ( is_year() ) { | |
| $trail['trail_end'] = get_the_time( __( 'Y', 'breadcrumb-trail' ) ); | |
| } | |
| } | |
| } | |
| /* If viewing search results. */ | |
| elseif ( is_search() ) | |
| $trail['trail_end'] = sprintf( __( 'Search results for "%1$s"', 'breadcrumb-trail' ), esc_attr( get_search_query() ) ); | |
| /* If viewing a 404 error page. */ | |
| elseif ( is_404() ) | |
| $trail['trail_end'] = __( '404 Not Found', 'breadcrumb-trail' ); | |
| /* Allow devs to step in and filter the $trail array. */ | |
| return apply_filters( 'breadcrumb_trail_items', $trail, $args ); | |
| } | |
| /** | |
| * Gets the items for the breadcrumb trail if bbPress is installed. | |
| * | |
| * @since 0.5.0 | |
| * @access private | |
| * @param array $args Mixed arguments for the menu. | |
| * @return array List of items to be shown in the trail. | |
| */ | |
| function breadcrumb_trail_get_bbpress_items( $args = array() ) { | |
| /* Set up a new trail items array. */ | |
| $trail = array(); | |
| /* Get the forum post type object. */ | |
| $post_type_object = get_post_type_object( bbp_get_forum_post_type() ); | |
| /* If not viewing the forum root/archive page and a forum archive exists, add it. */ | |
| if ( !empty( $post_type_object->has_archive ) && !bbp_is_forum_archive() ) | |
| $trail[] = '<a href="' . get_post_type_archive_link( bbp_get_forum_post_type() ) . '">' . bbp_get_forum_archive_title() . '</a>'; | |
| /* If viewing the forum root/archive. */ | |
| if ( bbp_is_forum_archive() ) { | |
| $trail[] = bbp_get_forum_archive_title(); | |
| } | |
| /* If viewing the topics archive. */ | |
| elseif ( bbp_is_topic_archive() ) { | |
| $trail[] = bbp_get_topic_archive_title(); | |
| } | |
| /* If viewing a topic tag archive. */ | |
| elseif ( bbp_is_topic_tag() ) { | |
| $trail[] = bbp_get_topic_tag_name(); | |
| } | |
| /* If viewing a topic tag edit page. */ | |
| elseif ( bbp_is_topic_tag_edit() ) { | |
| $trail[] = '<a href="' . bbp_get_topic_tag_link() . '">' . bbp_get_topic_tag_name() . '</a>'; | |
| $trail[] = __( 'Edit', 'breadcrumb-trail' ); | |
| } | |
| /* If viewing a "view" page. */ | |
| elseif ( bbp_is_single_view() ) { | |
| $trail[] = bbp_get_view_title(); | |
| } | |
| /* If viewing a single topic page. */ | |
| elseif ( bbp_is_single_topic() ) { | |
| /* Get the queried topic. */ | |
| $topic_id = get_queried_object_id(); | |
| /* Get the parent items for the topic, which would be its forum (and possibly forum grandparents). */ | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( bbp_get_topic_forum_id( $topic_id ) ) ); | |
| /* If viewing a split, merge, or edit topic page, show the link back to the topic. Else, display topic title. */ | |
| if ( bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit() ) | |
| $trail[] = '<a href="' . bbp_get_topic_permalink( $topic_id ) . '">' . bbp_get_topic_title( $topic_id ) . '</a>'; | |
| else | |
| $trail[] = bbp_get_topic_title( $topic_id ); | |
| /* If viewing a topic split page. */ | |
| if ( bbp_is_topic_split() ) | |
| $trail[] = __( 'Split', 'breadcrumb-trail' ); | |
| /* If viewing a topic merge page. */ | |
| elseif ( bbp_is_topic_merge() ) | |
| $trail[] = __( 'Merge', 'breadcrumb-trail' ); | |
| /* If viewing a topic edit page. */ | |
| elseif ( bbp_is_topic_edit() ) | |
| $trail[] = __( 'Edit', 'breadcrumb-trail' ); | |
| } | |
| /* If viewing a single reply page. */ | |
| elseif ( bbp_is_single_reply() ) { | |
| /* Get the queried reply object ID. */ | |
| $reply_id = get_queried_object_id(); | |
| /* Get the parent items for the reply, which should be its topic. */ | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( bbp_get_reply_topic_id( $reply_id ) ) ); | |
| /* If viewing a reply edit page, link back to the reply. Else, display the reply title. */ | |
| if ( bbp_is_reply_edit() ) { | |
| $trail[] = '<a href="' . bbp_get_reply_url( $reply_id ) . '">' . bbp_get_reply_title( $reply_id ) . '</a>'; | |
| $trail[] = __( 'Edit', 'breadcrumb-trail' ); | |
| } else { | |
| $trail[] = bbp_get_reply_title( $reply_id ); | |
| } | |
| } | |
| /* If viewing a single forum. */ | |
| elseif ( bbp_is_single_forum() ) { | |
| /* Get the queried forum ID and its parent forum ID. */ | |
| $forum_id = get_queried_object_id(); | |
| $forum_parent_id = bbp_get_forum_parent( $forum_id ); | |
| /* If the forum has a parent forum, get its parent(s). */ | |
| if ( 0 !== $forum_parent_id) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_parents( $forum_parent_id ) ); | |
| /* Add the forum title to the end of the trail. */ | |
| $trail[] = bbp_get_forum_title( $forum_id ); | |
| } | |
| /* If viewing a user page or user edit page. */ | |
| elseif ( bbp_is_single_user() || bbp_is_single_user_edit() ) { | |
| if ( bbp_is_single_user_edit() ) { | |
| $trail[] = '<a href="' . bbp_get_user_profile_url() . '">' . bbp_get_displayed_user_field( 'display_name' ) . '</a>'; | |
| $trail[] = __( 'Edit', 'breadcrumb-trail' ); | |
| } else { | |
| $trail[] = bbp_get_displayed_user_field( 'display_name' ); | |
| } | |
| } | |
| /* Return the bbPress breadcrumb trail items. */ | |
| return apply_filters( 'breadcrumb_trail_get_bbpress_items', $trail, $args ); | |
| } | |
| /** | |
| * Turns %tag% from permalink structures into usable links for the breadcrumb trail. This feels kind of | |
| * hackish for now because we're checking for specific %tag% examples and only doing it for the 'post' | |
| * post type. In the future, maybe it'll handle a wider variety of possibilities, especially for custom post | |
| * types. | |
| * | |
| * @since 0.4.0 | |
| * @access private | |
| * @param int $post_id ID of the post whose parents we want. | |
| * @param string $path Path of a potential parent page. | |
| * @param array $args Mixed arguments for the menu. | |
| * @return array $trail Array of links to the post breadcrumb. | |
| */ | |
| function breadcrumb_trail_map_rewrite_tags( $post_id = '', $path = '', $args = array() ) { | |
| /* Set up an empty $trail array. */ | |
| $trail = array(); | |
| /* Make sure there's a $path and $post_id before continuing. */ | |
| if ( empty( $path ) || empty( $post_id ) ) | |
| return $trail; | |
| /* Get the post based on the post ID. */ | |
| $post = get_post( $post_id ); | |
| /* If no post is returned, an error is returned, or the post does not have a 'post' post type, return. */ | |
| if ( empty( $post ) || is_wp_error( $post ) || 'post' !== $post->post_type ) | |
| return $trail; | |
| /* Trim '/' from both sides of the $path. */ | |
| $path = trim( $path, '/' ); | |
| /* Split the $path into an array of strings. */ | |
| $matches = explode( '/', $path ); | |
| /* If matches are found for the path. */ | |
| if ( is_array( $matches ) ) { | |
| /* Loop through each of the matches, adding each to the $trail array. */ | |
| foreach ( $matches as $match ) { | |
| /* Trim any '/' from the $match. */ | |
| $tag = trim( $match, '/' ); | |
| /* If using the %year% tag, add a link to the yearly archive. */ | |
| if ( '%year%' == $tag ) | |
| $trail[] = '<a href="' . get_year_link( get_the_time( 'Y', $post_id ) ) . '" title="' . get_the_time( esc_attr__( 'Y', 'breadcrumb-trail' ), $post_id ) . '">' . get_the_time( __( 'Y', 'breadcrumb-trail' ), $post_id ) . '</a>'; | |
| /* If using the %monthnum% tag, add a link to the monthly archive. */ | |
| elseif ( '%monthnum%' == $tag ) | |
| $trail[] = '<a href="' . get_month_link( get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ) ) . '" title="' . get_the_time( esc_attr__( 'F Y', 'breadcrumb-trail' ), $post_id ) . '">' . get_the_time( __( 'F', 'breadcrumb-trail' ), $post_id ) . '</a>'; | |
| /* If using the %day% tag, add a link to the daily archive. */ | |
| elseif ( '%day%' == $tag ) | |
| $trail[] = '<a href="' . get_day_link( get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ), get_the_time( 'd', $post_id ) ) . '" title="' . get_the_time( esc_attr__( 'F j, Y', 'breadcrumb-trail' ), $post_id ) . '">' . get_the_time( __( 'd', 'breadcrumb-trail' ), $post_id ) . '</a>'; | |
| /* If using the %author% tag, add a link to the post author archive. */ | |
| elseif ( '%author%' == $tag ) | |
| $trail[] = '<a href="' . get_author_posts_url( $post->post_author ) . '" title="' . esc_attr( get_the_author_meta( 'display_name', $post->post_author ) ) . '">' . get_the_author_meta( 'display_name', $post->post_author ) . '</a>'; | |
| /* If using the %category% tag, add a link to the first category archive to match permalinks. */ | |
| elseif ( '%category%' == $tag && 'category' !== $args["singular_{$post->post_type}_taxonomy"] ) { | |
| /* Get the post categories. */ | |
| $terms = get_the_category( $post_id ); | |
| /* Check that categories were returned. */ | |
| if ( $terms ) { | |
| /* Sort the terms by ID and get the first category. */ | |
| usort( $terms, '_usort_terms_by_ID' ); | |
| $term = get_term( $terms[0], 'category' ); | |
| /* If the category has a parent, add the hierarchy to the trail. */ | |
| if ( 0 !== $term->parent ) | |
| $trail = array_merge( $trail, breadcrumb_trail_get_term_parents( $term->parent, 'category' ) ); | |
| /* Add the category archive link to the trail. */ | |
| $trail[] = '<a href="' . get_term_link( $term, 'category' ) . '" title="' . esc_attr( $term->name ) . '">' . $term->name . '</a>'; | |
| } | |
| } | |
| } | |
| } | |
| /* Return the $trail array. */ | |
| return $trail; | |
| } | |
| /** | |
| * Gets parent pages of any post type or taxonomy by the ID or Path. The goal of this function is to create | |
| * a clear path back to home given what would normally be a "ghost" directory. If any page matches the given | |
| * path, it'll be added. But, it's also just a way to check for a hierarchy with hierarchical post types. | |
| * | |
| * @since 0.3.0 | |
| * @access private | |
| * @param int $post_id ID of the post whose parents we want. | |
| * @param string $path Path of a potential parent page. | |
| * @return array $trail Array of parent page links. | |
| */ | |
| function breadcrumb_trail_get_parents( $post_id = '', $path = '' ) { | |
| /* Set up an empty trail array. */ | |
| $trail = array(); | |
| /* Trim '/' off $path in case we just got a simple '/' instead of a real path. */ | |
| $path = trim( $path, '/' ); | |
| /* If neither a post ID nor path set, return an empty array. */ | |
| if ( empty( $post_id ) && empty( $path ) ) | |
| return $trail; | |
| /* If the post ID is empty, use the path to get the ID. */ | |
| if ( empty( $post_id ) ) { | |
| /* Get parent post by the path. */ | |
| $parent_page = get_page_by_path( $path ); | |
| /* If a parent post is found, set the $post_id variable to it. */ | |
| if ( !empty( $parent_page ) ) | |
| $post_id = $parent_page->ID; | |
| } | |
| /* If a post ID and path is set, search for a post by the given path. */ | |
| if ( $post_id == 0 && !empty( $path ) ) { | |
| /* Separate post names into separate paths by '/'. */ | |
| $path = trim( $path, '/' ); | |
| preg_match_all( "/\/.*?\z/", $path, $matches ); | |
| /* If matches are found for the path. */ | |
| if ( isset( $matches ) ) { | |
| /* Reverse the array of matches to search for posts in the proper order. */ | |
| $matches = array_reverse( $matches ); | |
| /* Loop through each of the path matches. */ | |
| foreach ( $matches as $match ) { | |
| /* If a match is found. */ | |
| if ( isset( $match[0] ) ) { | |
| /* Get the parent post by the given path. */ | |
| $path = str_replace( $match[0], '', $path ); | |
| $parent_page = get_page_by_path( trim( $path, '/' ) ); | |
| /* If a parent post is found, set the $post_id and break out of the loop. */ | |
| if ( !empty( $parent_page ) && $parent_page->ID > 0 ) { | |
| $post_id = $parent_page->ID; | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| /* While there's a post ID, add the post link to the $parents array. */ | |
| while ( $post_id ) { | |
| /* Get the post by ID. */ | |
| $page = get_page( $post_id ); | |
| /* Add the formatted post link to the array of parents. */ | |
| $parents[] = '<span typeof="v:Breadcrumb">' . | |
| '<a rel="v:url" property="v:title" href="' . get_permalink( $post_id ) . '" title="' . esc_attr( get_the_title( $post_id ) ) . '">' . get_the_title( $post_id ) . '</a>'.'</span>'; | |
| /* Set the parent post's parent to the post ID. */ | |
| $post_id = $page->post_parent; | |
| } | |
| /* If we have parent posts, reverse the array to put them in the proper order for the trail. */ | |
| if ( isset( $parents ) ) | |
| $trail = array_reverse( $parents ); | |
| /* Return the trail of parent posts. */ | |
| return $trail; | |
| } | |
| /** | |
| * Searches for term parents of hierarchical taxonomies. This function is similar to the WordPress | |
| * function get_category_parents() but handles any type of taxonomy. | |
| * | |
| * @since 0.3.0 | |
| * @access private | |
| * @param int $parent_id The ID of the first parent. | |
| * @param object|string $taxonomy The taxonomy of the term whose parents we want. | |
| * @return array $trail Array of links to parent terms. | |
| */ | |
| function breadcrumb_trail_get_term_parents( $parent_id = '', $taxonomy = '' ) { | |
| /* Set up some default arrays. */ | |
| $trail = array(); | |
| $parents = array(); | |
| /* If no term parent ID or taxonomy is given, return an empty array. */ | |
| if ( empty( $parent_id ) || empty( $taxonomy ) ) | |
| return $trail; | |
| /* While there is a parent ID, add the parent term link to the $parents array. */ | |
| while ( $parent_id ) { | |
| /* Get the parent term. */ | |
| $parent = get_term( $parent_id, $taxonomy ); | |
| /* Add the formatted term link to the array of parent terms. */ | |
| $parents[] = '<span typeof="v:Breadcrumb">' . | |
| '<a rel="v:url" property="v:title" href="' . get_term_link( $parent, $taxonomy ) . '" title="' . esc_attr( $parent->name ) . '">' . $parent->name . '</a>'.'</span>'; | |
| /* Set the parent term's parent as the parent ID. */ | |
| $parent_id = $parent->parent; | |
| } | |
| /* If we have parent terms, reverse the array to put them in the proper order for the trail. */ | |
| if ( !empty( $parents ) ) | |
| $trail = array_reverse( $parents ); | |
| /* Return the trail of parent terms. */ | |
| return $trail; | |
| } |
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