Related post display in for custom post type is very easy. But if you have a custom taxonomy it is little tricky. You can use the following code to display related post from a post type. This code very useful to display related product while you are using custom taxonomy.
<?php
// get the custom post type's taxonomy terms
$custom_taxterms = wp_get_object_terms( $post->ID, 'product_category', array('fields' => 'ids') );
// arguments
$args = array(
'post_type' => 'product',
'post_status' => 'publish',
'posts_per_page' => 4, // you may edit this number
'orderby' => 'rand',
'tax_query' => array(
array(
'taxonomy' => 'product_category',
'field' => 'id',
'terms' => $custom_taxterms
)
),
'post__not_in' => array ($post->ID),
);
$related_items = new WP_Query( $args );
// loop over query
if ($related_items->have_posts()) :
while ( $related_items->have_posts() ) : $related_items->the_post();
?>
<div class="related_item">
<div class="Related_image">
<a href="<?php the_permalink() ?>"><?php echo get_the_post_thumbnail( ); ?></a>
</div>
<div class="Related_title">
<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a><h2>
</div>
</div>
<?php
endwhile;
endif;
// Reset Post Data
wp_reset_postdata();
?>
In This post my Taxony name is product_category and post type name is product
Don’t forget to change this two variable as per your name. My result of code.
