Restricting results to the same category as the current post object

Limiting posts, pages, products or any custom post type results to only categories, or any taxonomy terms - where the post type object (post, page, product etc..) belongs to.

​What is this, and where do I put this custom code?​
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add_filter( 'asp_query_args', 'asp_posts_from_same_terms', 10, 2 );
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function asp_posts_from_same_terms($args, $search_id) {
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	$taxonomies = 'category, post_tag';	// comma separated list of taxonomies
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	$allow_missing = false; // allow (empty) items with no connection to any of the taxonomy terms filter
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  $search_ids = 'all';    // comma separated list of search IDs, where the code should apply
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​
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	// --- DO NOT CHANGE ANYTHING BELOW ---
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    $search_ids = explode(',', $search_ids);
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    foreach ( $search_ids as &$sid )
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        $sid = trim($sid);
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	if (
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	        !empty($args['_page_id']) &&
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            ( in_array('all', $search_ids) || in_array($search_id, $search_ids) )
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    ) {
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		$taxonomies = explode(',', $taxonomies);
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		foreach ( $taxonomies as $taxonomy ) {
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			$taxonomy = trim($taxonomy);
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			$terms = wp_get_object_terms(
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			    $args['_page_id'],
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                $taxonomy,
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                array('fields' => 'ids')
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            );
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			if ( !is_wp_error($terms) && count($terms) ) {
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				$args['post_tax_filter'][] = array(
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				  'taxonomy'  => $taxonomy, // taxonomy name
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				  'include'   => $terms,   	// array of taxonomy term IDs to include
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				  'exclude'   => array(),
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				  'allow_empty' => $allow_missing    // allow (empty) items with no connection to any of the taxonomy terms filter
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				);
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			}
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		}
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	}
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	return $args;
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}
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$taxonomies (string) - comma separated list of taxonomies, where this code should apply to
$allow_missing (boolean) - in cases, when the resulting objects (posts, pages etc..) does not have the taxonomy assigned - should they be allowed as results.
Ex.: Current page belongs to post_tag named Tag1. The search is configured to search posts and products as well, but products can not have assigned items from post_tag taxonomy. When $allow_missing = false; (default), all of the products will be excluded.
$search_ids (string) - comma separated list of serach IDs, where the code should apply on. Assigning 'all' (default) value will apply on all search bars.

Frontend Filters - Previous

Taxonomy Filters

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Last modified 1yr ago

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