public function compare_response_with_answer(array $response, question_answer $answer)
{
global $CFG, $currentanswerwithhint;
require_once $CFG->dirroot . '/question/type/regexp/locallib.php';
$response['answer'] = remove_blanks($response['answer']);
if ($currentanswerwithhint) {
$response['answer'] = $currentanswerwithhint;
}
if ($response == $this->get_correct_response()) {
return true;
}
// do NOT match student response against Answer 1 : if it matches, already matched by get_correct_response() above
// and Answer 1 may contain metacharacters that do not follow correct regex syntax
// get id of Answer 1
foreach ($this->answers as $key => $value) {
break;
}
// if this is Answer 1 then return; do not try to match
if ($key == $answer->id) {
return;
}
return self::compare_string_with_wildcard($response['answer'], $answer->answer, $answer->fraction, !$this->usecase);
}
public function specific_feedback(question_attempt $qa)
{
$question = $qa->get_question();
$currentanswer = remove_blanks($qa->get_last_qt_var('answer'));
$ispreview = false;
$completemessage = '';
$closestcomplete = false;
foreach ($qa->get_reverse_step_iterator() as $step) {
$hintadded = $step->has_behaviour_var('_helps') === true;
break;
}
$closest = $question->closest;
if ($hintadded) {
// hint added one letter or hint added letter and answer is complete
$answer = $question->get_matching_answer(array('answer' => $closest[0]));
// help has added letter OR word and answer is complete
$isstateimprovable = $qa->get_behaviour()->is_state_improvable($qa->get_state());
if ($closest[2] == 'complete' && $isstateimprovable) {
$closestcomplete = true;
$class = '"correctness correct"';
$completemessage = '<div class=' . $class . '>' . get_string("clicktosubmit", "qtype_regexp") . '</div>';
}
} else {
$answer = $question->get_matching_answer(array('answer' => $qa->get_last_qt_var('answer')));
}
if ($closest[3]) {
$closest[3] = '[' . $closest[3] . ']';
// rest of submitted answer, in red
}
$f = '';
// student's response with corrections to be displayed in feedback div
$f = '<span style="color:#0000FF;">' . $closest[1] . '<strong>' . $closest[4] . '</strong></span> ' . $closest[3];
// color blue for correct words/letters
if ($answer && $answer->feedback || $closestcomplete == true) {
return $question->format_text($f . $answer->feedback . $completemessage, $answer->feedbackformat, $qa, 'question', 'answerfeedback', $answer->id);
} else {
return $f;
}
}
