Custom redirect after pods creates new post

PodsRedirect.php

<?php

/**
 * Allows custom redirect using custom fields belonging to newly created post
 * after a pods form submission
 */

class PodsRedirect {

    public function __construct()
    {
        // WP uses this to determine query vars
        add_filter('query_vars', [$this, 'addQueryVars']);

        // Standard hook for redirects
        add_action('template_redirect', [$this, 'redirectNewPosts']);
    }

    /**
     * Create query var for new posts to access url param.
     *
     * This allows us to check url queries at runtime to determine if a new
     * Participant post is being created.
     *
     * @param $vars
     * @return array
     */
    public function addQueryVars($vars)
    {
        $vars[] = 'new_post';
        return $vars;
    }

    
    public function redirectNewPosts()
    {
        if( is_singular('post_type_slug') && get_query_var('new_post') ) {

            // Get pod of new post
            global $post;
            $pod = pods('post_type_slug', $post->ID);

            // Build redirect url using custom fields
            $field_val = $pod->field('field_name');
            $redirect_url = "/new_redirect_slug/?field_name={$field_val}";

            wp_safe_redirect($redirect_url);
            exit;
        }
    }
    
}