/**
* Builds the table of answers for a given quiz state.
*
* @param \Drupal\quiz\UserQuizStatusInterface $state
* @return array()
* Returns a rendable array.
*/
public function getResultsTable(UserQuizStatusInterface $state)
{
$answerStorage = static::entityTypeManager()->getStorage('answer');
$header = array();
$header['id'] = 'No.';
$header['question'] = 'Question';
$header['expected'] = 'Correct Answer';
$header['received'] = 'Your Answer';
$rows = array();
$answers = $state->getAnswers();
$c = 1;
foreach ($answers as $answer) {
/* @var $answer \Drupal\quiz\Entity\Answer */
$question = $answer->getQuestion();
/* @var $question \Drupal\quiz\Entity\Question */
$rows[$answer->id()]['id'] = $c++;
$rows[$answer->id()]['question'] = $answer->getQuestion()->get('question')->value;
$rows[$answer->id()]['expected'] = '';
$rows[$answer->id()]['received'] = '';
$possible = array();
//display the correct answer for the question
if ($question->getType() == 'multiple_choice_question') {
foreach ($question->get('field_multiple_answer') as $field) {
if ($field->value == 1) {
$rows[$answer->id()]['expected'] .= $field->name . ', ';
}
$possible[] = $field->name;
}
}
if ($question->getType() == 'text_question') {
$rows[$answer->id()]['expected'] = $question->get('field_text_answer')->value;
}
if ($question->getType() == 'true_or_false') {
if ($question->get('field_true_or_false')->value == 0) {
$rows[$answer->id()]['expected'] = 'False';
} else {
$rows[$answer->id()]['expected'] = 'True';
}
}
//display the user answer for the question
if ($answer->getType() == 'multiple_choice_answer') {
foreach ($answer->get('field_multiple_answer') as $delta => $field) {
if ($field->value == 1) {
$rows[$answer->id()]['received'] .= $possible[$delta] . ', ';
}
}
}
if ($answer->getType() == 'text_answer') {
$rows[$answer->id()]['received'] = $answer->get('field_text_answer')->value;
}
if ($answer->getType() == 'true_or_false') {
if ($answer->get('field_true_or_false')->value == 0) {
$rows[$answer->id()]['received'] = 'False';
} else {
$rows[$answer->id()]['received'] = 'True';
}
}
}
$build['table'] = array('#type' => 'table', '#header' => $header, '#rows' => $rows, '#empty' => $this->t('You didn\'t answer any question.'), '#cache' => ['contexts' => $answerStorage->getEntityType()->getListCacheContexts(), 'tags' => $answerStorage->getEntityType()->getListCacheTags()]);
return $build;
}
public function getUserQuizStateAnswersCount(AccountInterface $account, UserQuizStatusInterface $state)
{
$answerStorage = static::entityTypeManager()->getStorage('answer');
$query = $answerStorage->getQuery();
$aids = $query->Condition('user_id', $account->id())->Condition('question', $this->id())->Condition('user_quiz_status', $state->id())->execute();
return count($aids);
}