CakePHP : Form Radio Default Checked Value

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

Usage
<?= $form -> radio($field, $options, $attributes); ?>
Example
<?= $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 [...]