public function get_correct_response()
{
$answer = $this->get_correct_answer();
if (!$answer) {
return array();
}
$response = array('answer' => str_replace('.', $this->ap->get_point(), $answer->answer));
if ($this->has_separate_unit_field()) {
$response['unit'] = $this->ap->get_default_unit();
} else {
if ($this->unitdisplay == qtype_numerical::UNITINPUT) {
$response['answer'] = $this->ap->add_unit($answer->answer);
}
}
return $response;
}
public function start_attempt(question_attempt_step $step, $variant) {
$step->set_qt_var('_separators',
$this->ap->get_point() . '$' . $this->ap->get_separator());
}
