Reply To: Adjust main query based on taxonomy of "Relationship" related posts

• MWDelaney

• August 22, 2014 at 9:48 am

I solved it, for the most part. Here’s what worked for me:

/*--------------------------------------------------------------------------------------
    *
    * Filter the query using the rules
    *
    *-------------------------------------------------------------------------------------*/

// Get all the rules that have a taxonomy term that match the visitor's GEO-IP-detected country 
function get_relevent_rules() {
     $args = array(
        'numberposts' => '-1',
	    'post_type'   => 'display_rule',
        'tax_query'   => array(
            array(
                'taxonomy' => 'my_taxonomy',
                'terms' => 'A_GLOBAL_SET_ELSEWHERE_TO_THE_VISITORS_COUNTRY_OF_ORIGIN',      
                'field' => 'slug',
            )
        )
    );
    $return = array();
    foreach (wp_list_pluck( get_posts($args), 'ID') as $id) {
        $return[] = array(
                    'key'       => 'display_rules',
                    'value'     => '"' . $id . '"',
                    'compare'   => 'NOT LIKE',
                );
    }
    return $return;
}

// Change the main query to exclude any posts with a relationship field keyed 'display_rules' which includes any of the display rules containing our visitor's country.
 function only_in_countries($query) {
    if ($query->is_main_query()) {
        $query->set( 'meta_query', get_relevent_rules()
            
           
        );
    }
}

if( ! is_admin()) { add_action('pre_get_posts', 'only_in_countries'); }