Auto Generate Post Title from 2 ACF Taxonomies [closed]

Try this in your functions.php file:

add_action('save_post', 'wpb_autogenerate_events_title', 10, 3);

function wpb_autogenerate_events_title($post_id, $post, $update) {
    // Check if it's the 'events' CPT and if the title is empty.
    if ('events' !== $post->post_type || !empty($post->post_title)) {
        return;
    }

    // Fetch terms from 'category' and 'nameselection' taxonomies.
    $category_term = wp_get_post_terms($post_id, 'category', ['fields' => 'names']);
    $nameselection_term = wp_get_post_terms($post_id, 'nameselection', ['fields' => 'names']);

    // Fetch the 'date' custom field created with ACF Pro.
    $date = get_field('date', $post_id);

    // Combine the terms and the date to form the title.
    $new_title = join(' - ', array_merge((array) $category_term, (array) $nameselection_term, (array) $date));

    // Prepare the slug from the title.
    $new_slug = sanitize_title($new_title);

    // Update the post.
    wp_update_post([
        'ID' => $post_id,
        'post_title' => $new_title,
        'post_name' => $new_slug, // This is the slug.
    ]);
}