I know this is an older post, but thought I would add to it, as it is a great feature that MB has.
In my case I have a form that is capturing submissions, so like a contact form. I created a custom post type of "Submissions" and then added the custom fields I wanted on that form.
Now, I did not want the Post Title to be on the frontend, but if you remove it you get an error and if you hide it, the submission captures and empty field. So I took the code above that John submitted an modified it a bit. Now when the form is submitted the Post Title entry is the user's First and Last name.
Hope this helps. =]
add_action( 'rwmb_frontend_after_save_post', 'update_submission_post_title');
function update_submission_post_title( $object ) {
$post_type = $object->post_type;
if ( 'submission' == $post_type ) {
$post_id = $object->post_id;
// Get both field values
$first_name = rwmb_meta( 'first_name', '', $post_id );
$last_name = rwmb_meta( 'last_name', '', $post_id );
// Combine the names
$full_name = trim( $first_name . ' ' . $last_name );
// Only update if we have a name
if ( ! empty( $full_name ) ) {
// Prepare update post
$my_post_title = array(
'ID' => $post_id,
'post_title' => $full_name,
'post_name' => sanitize_title( $full_name ),
);
wp_update_post( $my_post_title );
}
}
}
