In chapter one of the forms book, there's a line saying:
You can change the form method in the indexSuccess.php template by changing the form method attribute:
but what's actually changed is the action, specifically the parameter to url_for changed from 'contact/submit' to 'contact/index'. So it should read:
You can change the form's action in the indexSuccess.php template by changing the form action attribute:
Though as I think about it, this section is awkward because it's mixing two meanings of 'method', the http 'GET/POST meaning' and the PHP 'method of a class' meaning.