Generate Post Title and Slug from Advanced Custom Fields

I often need to create post titles in WordPress based on fields I’ve generated using Advanced Custom Fields. Below is an example that assumes we have a Custom Post Type registered to “staff” and two Custom Fields with the name of “first_name” and “last_name”. Using the “update_value” hook provided by Advanced Custom Fields and “wp_update_post” I am able to update the Slug and Post Title using the values given in the respective fields.

<?php
/** Create Title and Slug */
function acf_title( $value, $post_id, $field ) {
 if ( get_post_type( $post_id ) === 'staff' ) {

 $new_title = get_field( 'first_name', $post_id ) . ' ' . $value;
 $new_slug = sanitize_title( $new_title );

 wp_update_post(
 array(
 'ID' => $post_id,
 'post_title' => $new_title,
 'post_name' => $new_slug,
 )
 );
 }
 return $value;
}
add_filter( 'acf/update_value/name=last_name', 'acf_title', 10, 3 );

To disable the Title field I remove it from the supports argument for the register_post_type.

'supports' => array( 'editor', 'thumbnail', 'revisions', 'page-attributes' ),

Disabling the title at a custom post type level will, unfortunately, remove the clickable permalink below the title that I often use. To combat that I create a very simple metabox with the permalink. Demonstrated below. (I believe this is no longer the case with Post Types using the Block Editor)

/**
 * Adds a meta box
 */
function simple_meta_box() {
 add_meta_box( 'prfx_meta', ( 'View Post' ), 'simple_meta_box_callback', 'staff', 'side', 'high' );
}
add_action( 'add_meta_boxes', 'simple_meta_box' );

/**
 * Outputs the content of the meta box
 */
function simple_meta_box_callback( $post ) {
 echo '<a href="';
 the_permalink();
 echo '" class="button button-small" target="_blank">View Profile</a>';
}

http://philhoyt.com/2016/12/15/using-advanced-custom-fields-create-post-title/