add_action('init', 'tribe_events_rewrite');
function tribe_events_rewrite() {
global $wp_rewrite;
$queryarg = 'post_type=tribe_events&p=';
$wp_rewrite->add_rewrite_tag('%tribe_events_id%', '([^/]+)',$queryarg);
$wp_rewrite->add_permastruct('tribe_events', '/event/%tribe_events_id%', false); }
add_filter('post_type_link', 'tribe_events_permalink', 1, 3);
function tribe_events_permalink($post_link, $id = 0, $leavename) {
global $wp_rewrite;
$post = &get_post($id);
if ( is_wp_error( $post ) )
return $post;
$newlink = $wp_rewrite->get_extra_permastruct($post->post_type);
$newlink = str_replace('%'.$post->post_type.'_id%', $post->ID, $newlink);
$newlink = home_url(user_trailingslashit($newlink));
return $newlink;
}