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Is it possible to display related posts from same category as the current post?

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1 Answer

up vote 2 down vote accepted

one possibility:

$related = get_posts( array( 'category__in' => wp_get_post_categories($post->ID), 'numberposts' => 5, 'post__not_in' => array($post->ID) ) );
if( $related ) foreach( $related as $post ) {
setup_postdata($post);
/*whatever you want to output*/
}
wp_reset_postdata();

http://codex.wordpress.org/Template_Tags/get_posts http://codex.wordpress.org/Function_Reference/wp_reset_postdata http://codex.wordpress.org/Function_Reference/wp_get_post_categories

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Be very careful with your variable names! You're using a global $post to perform your query, then redefining $post in the same context within your foreach loop. – EAMann♦ Oct 2 '11 at 16:15
@EAMann - you are generally right - however in my experience, using setup_postdata() with anything other than $post does not deliver the right output for the_title() for instance. wp_reset_postdata() should in theory take care of resetting $post. – Michael Oct 2 '11 at 17:08
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That's because setup_postdata() itself references $post as a global. Instead of using get_posts() you should define a custom instance of WP_Query and use that to get your posts. It will set up the post data for you as well as make the_title() et al work the way they're supposed ti. – EAMann♦ Oct 3 '11 at 1:12

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