问题描述：

I want to redirect every custom taxonomy to the first post in the loop.

For example:

I have a list of cities (taxomomy) like boston, denver, new york...

I found an example to do this here: https://wordpress.stackexchange.com/questions/207298/redirecting-category-link-to-first-child-post

function redirect_cat_wpse_207298() {
if (is_tax()) {
global $post;
wp_safe_redirect(get_permalink($post->ID));
die;
}
}
add_action(\'template_redirect\',\'redirect_cat_wpse_207298\');

But now it redirects always to the oldest post. Is there a way to change to order to the newest post?

网友观点：

 add_action( \'pre_get_posts\', \'order_by_date_callback\' );
function order_by_date_callback ( $query ) 
{
if (($query->is_main_query()) && (is_tax()))
$query->set( \'orderby\', \'date\' );
$query->set( \'order\', \'DESC\' );
}