Order custom post by custom field

// Added by rejauldu
function grant_recipients_pre_get_posts( $query ) {
// do not modify queries in the admin
if( is_admin() ) {
return $query;
}
// only modify queries for 'event' post type
if( isset($query->query_vars['post_type']) && $query->query_vars['post_type'] == 'grant_recipients' ) {
$query->set('orderby', 'meta_value');
$query->set('meta_key', 'start_date');
$query->set('order', 'DESC');
}
// return
return $query;
}
add_action('pre_get_posts', 'grant_recipients_pre_get_posts');

Labels: Plugin development, Web development, WordPress