wp-generate-dynamic-post-types-sub-pages-post-meta.php

<?php

// Post Type Subpages: Saubegarde d'un post
add_action('save_post', 'hwk_ptsp_save_post', 10, 2);
function hwk_ptsp_save_post($post_id, $post){
    if(!$post_type = hwk_ptsp_get_post_type($post->post_type))
        return;
        
    // Aucun Meta Parent: Création du meta par défaut
    if(!get_post_meta($post_id, $post_type['meta_prefix'] . 'parent', true))
        update_post_meta($post_id, $post_type['meta_prefix'] . 'parent', get_post_field('post_name', $post_id));
    
    // Aucun Meta Page: Création des metas par défaut
    foreach($post_type['pages'] as $page){
        if( !get_post_meta($post_id, $post_type['meta_prefix'] . $page['name'], true) && hwk_ptsp_page_has_rewrite($page) )
            update_post_meta($post_id, $post_type['meta_prefix'] . $page['name'], get_post_field('post_name', $post_id));
        
    }
    
    // Meta Parent: Sanitize & Update du post->name
    if( ($new_slug = get_post_meta($post_id, $post_type['meta_prefix'] . 'parent', true)) && $new_slug != $post->post_name){
        $new_slug = sanitize_title($new_slug);
        wp_update_post(array(
            'ID'        => $post_id,
            'post_name' => $new_slug
        ));
    }
}
// Post Type Subpages: Mise à jour d'un post_meta
add_action('added_post_meta',   'hwk_ptsp_update_meta', 10, 4);
add_action('updated_post_meta', 'hwk_ptsp_update_meta', 10, 4);
function hwk_ptsp_update_meta($meta_id, $post_id, $meta_key, $meta_value){
    if(!$post_type = hwk_ptsp_get_post_type(get_post_type($post_id)))
        return;
    
    // Meta Parent: Sanitize & Update du post->name
    if($meta_key == $post_type['meta_prefix'] . 'parent'){
        $new_slug = sanitize_title($meta_value);
        update_post_meta($post_id, $post_type['meta_prefix'] . 'parent', $new_slug);
        return wp_update_post(array(
            'ID'        => $post_id,
            'post_name' => $new_slug
        ));
    }
    
    foreach($post_type['pages'] as $page){
        if($meta_key != $post_type['meta_prefix'] . $page['name'])
            continue;
        
        // Meta Page: Sanitize & Update
        return update_post_meta($post_id, $post_type['meta_prefix'] . $page['name'], sanitize_title($meta_value));
    }
}