I want to add "Category" to my WP breadcrumbs - php

Question

I have a premium WordPress theme which has breadcrumbs by default, but it does not show Category (and Sub-Category) item when on post page: Home > Category > Sub-Category > Post Title
Instead it just displays like this: Home > Post Title
This is the function which handles breadcrumbs:
(I marked the part of the code that I think is important with this sign, to save you time: ==========>>)
// 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> > ";
}
}
else{
$return .= '<a class="ish-pb-breadcrumbs-home" href="';
$return .= home_url();
$return .= '">';
$return .= '<span>' . __( 'Home', 'ishyoboy' ) . '</span>';
$return .= "</a> > ";
}
}
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, ' > ', 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 = " > ";
$return .= ''.$portfolio_page->post_title.'' . $separator;
}
if ( ! empty( $term ) ){
$return .= get_term_parents($term->term_id, 'portfolio-category', TRUE, ' > ', 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, ' > ', 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, ' > ', FALSE );
}
}
break;
// to here ==========>>
default :
$type = get_post_type( get_the_ID() );
$obj = get_post_type_object( $type );
if ( is_object( $obj ) ){
$return .= '' . $obj->labels->name . ' > ';
}
}
}
else if ( ( function_exists('is_woocommerce_page') && function_exists('is_woocommerce') ) && (is_woocommerce() || is_woocommerce_page() )){
ob_start();
woocommerce_breadcrumb(array(
'delimiter' => ' > ',
'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 = " > ";
$return .= ''.$portfolio_page->post_title.'' . $separator;
}
if ($current_term->parent != 0 ){
$return .= get_term_parents($current_term->parent, 'portfolio-category', TRUE, ' > ', FALSE );
}
$return .= $current_term->name;
}
}
}
else if (is_page()){
global $post;
if ($post->post_parent != 0 ){
$return .= get_page_parents($post->post_parent, TRUE, ' > ', 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 );
}
}
}
And then I've made a change in code which generated the desired change - Category appeared in breadcrumbs: Home > Category > Sub-Category > Post Title
But on the Category archive page breadcrumbs look like this: Home > Category > Category
Live example: http://pigtelligent.com/science/
The change I've made in above-mentioned code:
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 );
}
I know that for someone smarter this should be easy, but I've spent whole day trying to figure this out, so can you please help me? :)

Answer 1

Categories can get tricky fast as posts can have multiple categories, and category landing pages can access a lot of meta which can get misleading. Make sure you've reviewed the Template Hierarchy page on the codex and you've got a firm understanding of how WP handles taxonomy.
Use What The File to find out what template you're actually on as you might not be on a category page, causing is_category() to return false. You could be on a single (as the if statement wrapping the logic you pointed out is checking is_category() || is_single()), or you might need to add a check for is_archive().
My best suggestion is to figure out if you're on a category page first, then stop all that extra logic and just spit out the category's name. Not too much help, I know, but hopefully that'll point you in the right direction

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 ) {
$output = '<li>'.get_the_title($ancestor).'</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>';
}
?>
Get using: <?php the_breadcrumb(); ?>