Reply To: Archive.php with custom field filter (object post)

• bibi.lerici

• September 19, 2014 at 6:10 am

Thank you, can not imagine what relief dates when you solve a problem that blocks an entire project like mine.

To put chronicle the complete function for this specific use.

• my custom post archive : ‘newstand’
• my custom field: ‘newstand_selettore_stand’ (Object post one choose or multi choose for only custom post “stand”)
• a ID value for a stand custom post exemple : 3640

Result on the URL of site:
my url for archive page: http://mydomain.com/newstand/?newstand_selettore_stand=3640

The function:

function my_pre_get_posts_newstand( $query ) {
    // validate
    if( is_admin() )               { return; }
    if( !$query->is_main_query() ) { return; }

    // get original meta query
    $meta_query = $query->get('meta_query');
    
        // allow the url to alter the query
        // eg: http://www.website.com/events?location=melbourne
        // eg: http://www.website.com/events?location=sydney
        // eg  http://www.luccafan/newstand/?newstand_selettore_stand=3640
        if( !empty($_GET['newstand_selettore_stand']) ){
                $newstand_selettore_stand = explode(',', $_GET['newstand_selettore_stand']);
                if( !empty($newstand_selettore_stand) ) {
                    foreach( $newstand_selettore_stand as $id ) {
                            $meta_query[] = array(
                                'key'       => 'newstand_selettore_stand',
                                'value'     => $id,
                                'compare'   => 'LIKE',
                            );
                    }
                }
        }// end of !empty($_GET['newstand_selettore_stand'])

    // update the meta query args
    $query->set('meta_query', $meta_query);

    // always return
    return;

}
add_action('pre_get_posts', 'my_pre_get_posts_newstand');