Updating A Post Title Using GET Method and $wpdb Class - wordpress

Question

I have a programming exercise and I wanted to check if what I have done so far is the best way to update a post title based on setting the query string. In my example below I create a link for updating the post and validate the origin with a nonce. I used the template_redirect action as it only fires once where as the wp and parse_query actions seemed to fire multiple times. The GET request can come from a form submit or link click but I've only attached the link example but the code should work for both situations.
function update_post_title() {
global $wpdb;
$post_id = get_query_var( 'post_id', 0 );
$post_title = get_query_var( 'post_title', '' );
$post_nonce = get_query_var( 'update_post_title_nonce', '' );
if( ! empty( $post_title ) AND $post_id > 0 ) {
if ( ! wp_verify_nonce( $post_nonce, 'update_post_title_action' ) ) {
wp_die( 'Security check failed' );
}
$post_title = sanitize_text_field( $post_title );
//$post_slug = sanitize_title_with_dashes( $post_title );
$post_id = intval( $post_id );
$rows_affected = $wpdb->update(
$wpdb->posts,
array( 'post_title' => $post_title ),
array( 'ID' => $post_id ),
array( '%s'),
array( '%d' )
);
}
}
function add_custom_query_vars( $public_query_vars ) {
$public_query_vars[] = 'post_id';
$public_query_vars[] = 'post_title';
$public_query_vars[] = 'update_post_title_nonce';
return $public_query_vars;
}
add_filter( 'query_vars', 'add_custom_query_vars' );
add_action( 'template_redirect', 'update_post_title' );
Sample link generate.
global $post;
<a href="<?php echo wp_nonce_url( add_query_arg( array(
'post_id' => 123,
'post_title' => 'The New Title', ),
site_url( $post->post_name ) ),
'update_post_title_action',
'update_post_title_nonce' );
?>">Click To Update</a>