Redirect affiliate users to the Affiliate area page when login through EDD Login form

custom_edd_login_redirect.php

<?php
//if the user is an affiliate. Based on that, you can redirect them either to the Affiliate Area or the EDD Customer Dashboard.
if ( ! function_exists( 'custom_edd_login_redirect' ) ) {
    function custom_edd_login_redirect( $redirect_to, $user_id ) {
        if ( function_exists( 'affwp_is_affiliate' ) && affwp_is_affiliate( $user_id ) ) {
            return site_url( '/affiliate-area/' );
        }

        return $redirect_to;
    }
    add_filter( 'edd_login_redirect', 'custom_edd_login_redirect', 10, 2 );
}