/**
* Serializes the survey to an associative array which
* can then easily be converted into JSON or similar.
*
* @since 0.1
*
* @param null|array $fields
*
* @return array
*/
public function toArray($fields = null)
{
$data = parent::toArray($fields);
$data['questions'] = array();
foreach ($this->questions as $question) {
$data['questions'][] = $question->toArray();
}
return $data;
}
