CakePHP : Form Radio Default Checked Value

With the CakePHP FormHelper, you can output a set or a list of radio button widgets.

<?= $form -> radio($field, $options, $attributes); ?>
<?= $form -> radio(Model.field’, array(Option1′, Option2′, Option3′), array(default’ => option2′)); ?>
In the line of code above, you’ll notice the default attribute value. This specifies the value of the radio button which will be checked [...]