In the example we need all of our articles to have the following schema:
- Site URL
- news
- post name
But once the structure is changed, not all URLs are 404.
Hook template_redirect
The objective of the hook is to detect when a URL responds in 404, if this is the case we look for the slug of the post and if it corresponds to a post in the database we redirect it with our prefix.
It works with all prefixes!
function add_prefix() {
global $wp;
if(is_404()){
$url = home_url( $wp->request );
$segments = explode('/', parse_url($url, PHP_URL_PATH));
$last_segment = end($segments);
$post_slug = get_page_by_path($last_segment, OBJECT, 'post');
if ($post_slug) {
$post_id = $post_slug->ID;
wp_redirect(( get_permalink($post_slug->ID) ), 301 );
} else {
//on sait jamais
}
}
}
add_filter( 'template_redirect', 'add_prefix' );