How to render a checkbox that is checked by default with the symfony2 Form Builder?

Question

I have not found any easy way to accomplish to simply check a Checkbox by default. That can not be that hard, so what am i missing?

Answer 1

This works as well, but aware of persistent "checked" state

$builder->add('isPublic', 'checkbox', array(
    'empty_data' => 'on',
));