<?php
/**
* Display breadcrumbs for posts, pages, archive page with the microdata that search engines understand
*
* @see http://support.google.com/webmasters/bin/answer.py?hl=en&answer=185417
*
* @param array|string $args
*/
function grd_breadcrumbs( $args = '' ) {
$args = wp_parse_args( $args, array(
'separator' => ' - ',
'home_class' => 'home',
'before' => '',
'after' => '',
'before_item' => '',
'after_item' => '',
'taxonomy' => 'category',
'display_last_item' => true,
'show_on_front' => false,
'labels' => array(
'home' => esc_html__( 'Home', 'grd' ),
'archive' => esc_html__( 'Archives', 'grd' ),
'blog' => esc_html__( 'Blog', 'grd' ),
'search' => esc_html__( 'Search results for', 'grd' ),
'not_found' => esc_html__( 'Not Found', 'grd' ),
'author' => esc_html__( 'Author Archives:', 'grd' ),
'day' => esc_html__( 'Daily Archives:', 'grd' ),
'month' => esc_html__( 'Monthly Archives:', 'grd' ),
'year' => esc_html__( 'Yearly Archives:', 'grd' ),
),
) );
$args = apply_filters( 'grd_breadcrumbs_args', $args );
if ( is_front_page() && ! $args['show_on_front'] ) {
return;
}
$items = array();
$page_header = grd_get_page_header_image();
$br_color_cl = 'style=" color:'.$page_header['br_color'].'"';
$br_link_color_cl = 'style=" color:'.$page_header['br_link_color'].'"';
// HTML template for each item
$item_tpl = $args['before_item'] . '
<span itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<a ' .$br_link_color_cl. ' href="%s" itemprop="url"><span itemprop="title">%s</span></a>
</span>
' . $args['after_item'];
$item_text_tpl = $args['before_item'] . '
<span itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<span ' .$br_color_cl. ' itemprop="title">%s</span>
</span>
' . $args['after_item'];
// Home
if ( ! $args['home_class'] ) {
$items[] = sprintf( $item_tpl, get_home_url(), $args['labels']['home'] );
} else {
$items[] = sprintf(
'%s<span itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<a ' .$br_link_color_cl. ' class="%s" href="%s" itemprop="url"><span itemprop="title">%s</span></a>
</span>%s',
$args['before_item'],
$args['home_class'],
get_home_url(),
$args['labels']['home'],
$args['after_item']
);
}
// Front page
if ( is_front_page() ) {
$items = array();
$items[] = sprintf( $item_text_tpl, $args['labels']['home'] );
}
// Blog
elseif ( is_home() && ! is_front_page() ) {
$items[] = sprintf(
$item_text_tpl,
$args['labels']['blog']
);
}
// Single
elseif ( is_single() ) {
// Terms
$taxonomy = $args['taxonomy'];
if ( is_singular( 'product' ) ) {
$taxonomy = 'product_cat';
if ( $page_id = get_option( 'woocommerce_shop_page_id' ) ) {
$items[] = sprintf( $item_tpl, esc_url( get_permalink( $page_id ) ), get_the_title( $page_id ) );
}
} elseif ( is_singular( 'portfolio' ) ) {
$taxonomy = 'portfolio_category';
if ( $page_id = get_option( 'grd_portfolio_page_id' ) ) {
$items[] = sprintf( $item_tpl, esc_url( get_permalink( $page_id ) ), get_the_title( $page_id ) );
}
} elseif ( is_singular( 'service' ) ) {
$taxonomy = 'service_category';
if ( $page_id = get_option( 'grd_service_page_id' ) ) {
$items[] = sprintf( $item_tpl, esc_url( get_permalink( $page_id ) ), get_the_title( $page_id ) );
}
}
$terms = get_the_terms( get_the_ID(), $taxonomy );
if( $terms ) {
$term = current( $terms );
$terms = grd_get_term_parents( $term->term_id, $taxonomy );
$terms[] = $term->term_id;
foreach ( $terms as $term_id ) {
$term = get_term( $term_id, $taxonomy );
$items[] = sprintf( $item_tpl, get_term_link( $term, $taxonomy ), $term->name );
}
}
if ( $args['display_last_item'] ) {
$items[] = sprintf( $item_text_tpl, get_the_title() );
}
}
// Page
elseif ( is_page() ) {
if ( ( function_exists( 'is_cart' ) && is_cart() ) || ( function_exists( 'is_checkout' ) && is_checkout() ) ) {
if ( $page_id = get_option( 'woocommerce_shop_page_id' ) ) {
$items[] = sprintf( $item_tpl, esc_url( get_permalink( $page_id ) ), get_the_title( $page_id ) );
}
} else {
$pages = grd_get_post_parents( get_queried_object_id() );
foreach ( $pages as $page ) {
$items[] = sprintf( $item_tpl, esc_url( get_permalink( $page ) ), get_the_title( $page ) );
}
}
if ( $args['display_last_item'] ) {
$items[] = sprintf( $item_text_tpl, get_the_title() );
}
} elseif ( function_exists( 'is_shop' ) && is_shop() ) {
$title = get_the_title( get_option( 'woocommerce_shop_page_id' ) );
if ( $args['display_last_item'] ) {
$items[] = sprintf( $item_text_tpl, $title );
}
}
// Taxonomy
elseif ( is_tax() || is_category() || is_tag() ) {
$current_term = get_queried_object();
if( $current_term ) {
$terms = grd_get_term_parents( get_queried_object_id(), $current_term->taxonomy );
if( $terms ) {
foreach ( $terms as $term_id )
{
$term = get_term( $term_id, $current_term->taxonomy );
$items[] = sprintf( $item_tpl, get_category_link( $term_id ), $term->name );
}
}
if ( $args['display_last_item'] )
$items[] = sprintf( $item_text_tpl, $current_term->name );
}
}
// Search
elseif ( is_search() ) {
$items[] = sprintf( $item_text_tpl, $args['labels']['search'] . ' "' . get_search_query() . '"' );
}
// 404
elseif ( is_404() ) {
$items[] = sprintf( $item_text_tpl, $args['labels']['not_found'] );
}
// Author archive
elseif ( is_author() ) {
// Queue the first post, that way we know what author we're dealing with (if that is the case).
the_post();
$items[] = sprintf(
$item_text_tpl,
$args['labels']['author'] . ' <span class="vcard"><a class="url fn n" href="' . get_author_posts_url( get_the_author_meta( 'ID' ) ) . '" title="' . esc_attr( get_the_author() ) . '" rel="me">' . get_the_author() . '</a></span>'
);
rewind_posts();
}
// Day archive
elseif ( is_day() ) {
$items[] = sprintf(
$item_text_tpl,
sprintf( esc_html__( '%s %s', 'grd' ), $args['labels']['day'], get_the_date() )
);
}
// Month archive
elseif ( is_month() ) {
$items[] = sprintf(
$item_text_tpl,
sprintf( esc_html__( '%s %s', 'grd' ), $args['labels']['month'], get_the_date( 'F Y' ) )
);
}
// Year archive
elseif ( is_year() ) {
$items[] = sprintf(
$item_text_tpl,
sprintf( esc_html__( '%s %s', 'grd' ), $args['labels']['year'], get_the_date( 'Y' ) )
);
}
// Archive
elseif ( is_post_type_archive( 'portfolio' ) ) {
$portfolio_page_id = get_option( 'grd_portfolio_page_id' );
if ( $portfolio_page_id && get_post( $portfolio_page_id ) ) {
$title = get_the_title( $portfolio_page_id );
} else {
$title = _x( 'Project', 'Project post type breadcrumb', 'grd' );
}
$items[] = sprintf(
$item_text_tpl,
$title
);
} elseif ( is_post_type_archive( 'service' ) ) {
$service_page_id = get_option( 'grd_service_page_id' );
if ( $service_page_id && get_post( $service_page_id ) ) {
$title = get_the_title( $service_page_id );
} else {
$title = _x( 'Service', 'Service post type breadcrumb', 'grd' );
}
$items[] = sprintf(
$item_text_tpl,
$title
);
} else {
$items[] = sprintf(
$item_text_tpl,
$args['labels']['archive']
);
}
echo implode( $args['separator'], $items );
}
/**
* Searches for term parents' IDs of hierarchical taxonomies, including current term.
* This function is similar to the WordPress function get_category_parents() but handles any type of taxonomy.
* Modified from Hybrid Framework
*
* @param int|string $term_id The term ID
* @param object|string $taxonomy The taxonomy of the term whose parents we want.
*
* @return array Array of parent terms' IDs.
*/
function grd_get_term_parents( $term_id = '', $taxonomy = 'category' ) {
// Set up some default arrays.
$list = array();
// If no term ID or taxonomy is given, return an empty array.
if ( empty( $term_id ) || empty( $taxonomy ) ) {
return $list;
}
do {
$list[] = $term_id;
// Get next parent term
$term = get_term( $term_id, $taxonomy );
$term_id = $term->parent;
} while ( $term_id );
// Reverse the array to put them in the proper order for the trail.
$list = array_reverse( $list );
array_pop( $list );
return $list;
}
/**
* Gets parent posts' IDs of any post type, include current post
* Modified from Hybrid Framework
*
* @param int|string $post_id ID of the post whose parents we want.
*
* @return array Array of parent posts' IDs.
*/
function grd_get_post_parents( $post_id = '' ) {
// Set up some default array.
$list = array();
// If no post ID is given, return an empty array.
if ( empty( $post_id ) ) {
return $list;
}
do {
$list[] = $post_id;
// Get next parent post
$post = get_post( $post_id );
$post_id = $post->post_parent;
} while ( $post_id );
// Reverse the array to put them in the proper order for the trail.
$list = array_reverse( $list );
array_pop( $list );
return $list;
}