public function subquestion(question_attempt $qa, question_display_options $options,
$index, question_graded_automatically $subq) {
$fieldprefix = 'sub' . $index . '_';
$fieldname = $fieldprefix . 'answer';
$response = $qa->get_last_qt_var($fieldname);
$inputattributes = array(
'type' => 'radio',
'name' => $qa->get_qt_field_name($fieldname),
);
if ($options->readonly) {
$inputattributes['disabled'] = 'disabled';
}
$result = $this->all_choices_wrapper_start();
$fraction = null;
foreach ($subq->get_order($qa) as $value => $ansid) {
$ans = $subq->answers[$ansid];
$inputattributes['value'] = $value;
$inputattributes['id'] = $inputattributes['name'] . $value;
$isselected = $subq->is_choice_selected($response, $value);
if ($isselected) {
$inputattributes['checked'] = 'checked';
$fraction = $ans->fraction;
} else {
unset($inputattributes['checked']);
}
$class = 'r' . ($value % 2);
if ($options->correctness && $isselected) {
$feedbackimg = $this->feedback_image($ans->fraction);
$class .= ' ' . $this->feedback_class($ans->fraction);
} else {
$feedbackimg = '';
}
$result .= $this->choice_wrapper_start($class);
$result .= html_writer::empty_tag('input', $inputattributes);
$result .= html_writer::tag('label', $subq->format_text($ans->answer,
$ans->answerformat, $qa, 'question', 'answer', $ansid),
array('for' => $inputattributes['id']));
$result .= $feedbackimg;
if ($options->feedback && $isselected && trim($ans->feedback)) {
$result .= html_writer::tag('div',
$subq->format_text($ans->feedback, $ans->feedbackformat,
$qa, 'question', 'answerfeedback', $ansid),
array('class' => 'specificfeedback'));
}
$result .= $this->choice_wrapper_end();
}
$result .= $this->all_choices_wrapper_end();
$feedback = array();
if ($options->feedback && $options->marks >= question_display_options::MARK_AND_MAX &&
$subq->maxmark > 0) {
$a = new stdClass();
$a->mark = format_float($fraction * $subq->maxmark, $options->markdp);
$a->max = format_float($subq->maxmark, $options->markdp);
$feedback[] = html_writer::tag('div', get_string('markoutofmax', 'question', $a));
}
if ($options->rightanswer) {
foreach ($subq->answers as $ans) {
if (question_state::graded_state_for_fraction($ans->fraction) ==
question_state::$gradedright) {
$feedback[] = get_string('correctansweris', 'qtype_multichoice',
$subq->format_text($ans->answer, $ans->answerformat,
$qa, 'question', 'answer', $ansid));
break;
}
}
}
$result .= html_writer::nonempty_tag('div', implode('<br />', $feedback), array('class' => 'outcome'));
return $result;
}
/**
* Output the content of the subquestion.
*
* @param question_attempt $qa
* @param question_display_options $options
* @param int $index
* @param question_graded_automatically $subq
* @return string
*/
public function subquestion(question_attempt $qa, question_display_options $options,
$index, question_graded_automatically $subq) {
if (!$subq instanceof qtype_multichoice_multi_question) {
throw new coding_exception('Expecting subquestion of type qtype_multichoice_multi_question');
}
$fieldprefix = 'sub' . $index . '_';
$fieldname = $fieldprefix . 'choice';
// Extract the responses that related to this question + strip off the prefix.
$fieldprefixlen = strlen($fieldprefix);
$response = [];
foreach ($qa->get_last_qt_data() as $name => $val) {
if (substr($name, 0, $fieldprefixlen) == $fieldprefix) {
$name = substr($name, $fieldprefixlen);
$response[$name] = $val;
}
}
$basename = $qa->get_qt_field_name($fieldname);
$inputattributes = array(
'type' => 'checkbox',
'value' => 1,
);
if ($options->readonly) {
$inputattributes['disabled'] = 'disabled';
}
$result = $this->all_choices_wrapper_start();
// Calculate the total score (as we need to know if choices should be marked as 'correct' or 'partial').
$fraction = 0;
foreach ($subq->get_order($qa) as $value => $ansid) {
$ans = $subq->answers[$ansid];
if ($subq->is_choice_selected($response, $value)) {
$fraction += $ans->fraction;
}
}
// Display 'correct' answers as correct, if we are at 100%, otherwise mark them as 'partial'.
$answerfraction = ($fraction > 0.999) ? 1.0 : 0.5;
foreach ($subq->get_order($qa) as $value => $ansid) {
$ans = $subq->answers[$ansid];
$name = $basename.$value;
$inputattributes['name'] = $name;
$inputattributes['id'] = $name;
$isselected = $subq->is_choice_selected($response, $value);
if ($isselected) {
$inputattributes['checked'] = 'checked';
} else {
unset($inputattributes['checked']);
}
$class = 'r' . ($value % 2);
if ($options->correctness && $isselected) {
$thisfrac = ($ans->fraction > 0) ? $answerfraction : 0;
$feedbackimg = $this->feedback_image($thisfrac);
$class .= ' ' . $this->feedback_class($thisfrac);
} else {
$feedbackimg = '';
}
$result .= $this->choice_wrapper_start($class);
$result .= html_writer::empty_tag('input', $inputattributes);
$result .= html_writer::tag('label', $subq->format_text($ans->answer,
$ans->answerformat, $qa, 'question', 'answer', $ansid),
array('for' => $inputattributes['id']));
$result .= $feedbackimg;
if ($options->feedback && $isselected && trim($ans->feedback)) {
$result .= html_writer::tag('div',
$subq->format_text($ans->feedback, $ans->feedbackformat,
$qa, 'question', 'answerfeedback', $ansid),
array('class' => 'specificfeedback'));
}
$result .= $this->choice_wrapper_end();
}
$result .= $this->all_choices_wrapper_end();
$feedback = array();
if ($options->feedback && $options->marks >= question_display_options::MARK_AND_MAX &&
$subq->maxmark > 0) {
$a = new stdClass();
$a->mark = format_float($fraction * $subq->maxmark, $options->markdp);
$a->max = format_float($subq->maxmark, $options->markdp);
$feedback[] = html_writer::tag('div', get_string('markoutofmax', 'question', $a));
}
if ($options->rightanswer) {
$correct = [];
foreach ($subq->answers as $ans) {
if (question_state::graded_state_for_fraction($ans->fraction) != question_state::$gradedwrong) {
$correct[] = $subq->format_text($ans->answer, $ans->answerformat, $qa, 'question', 'answer', $ans->id);
}
}
$correct = '<ul><li>'.implode('</li><li>', $correct).'</li></ul>';
$feedback[] = get_string('correctansweris', 'qtype_multichoice', $correct);
}
$result .= html_writer::nonempty_tag('div', implode('<br />', $feedback), array('class' => 'outcome'));
return $result;
}