function Quiz::addQuestion in Quiz 6.x

Same name and namespace in other branches

1. 8.6 src/Entity/Quiz.php \Drupal\quiz\Entity\Quiz::addQuestion()
2. 8.5 src/Entity/Quiz.php \Drupal\quiz\Entity\Quiz::addQuestion()

Add a question to this quiz.

@todo return value may change

Parameters

QuizQuestion $quiz_question:

Return value

\Drupal\quiz\Entity\QuizQuestionRelationship Newly created or found QuizQuestionRelationship.

File

src/Entity/Quiz.php, line 422

Class

Quiz

Defines the Quiz entity class.

Namespace

Drupal\quiz\Entity

Code

function addQuestion(QuizQuestion $quiz_question) {
  $relationships = Drupal::entityTypeManager()
    ->getStorage('quiz_question_relationship')
    ->loadByProperties([
    'quiz_vid' => $this
      ->getRevisionId(),
    'question_id' => $quiz_question
      ->id(),
    'question_vid' => $quiz_question
      ->getRevisionId(),
  ]);
  $query = Drupal::database()
    ->select('quiz_question_relationship', 'qqr')
    ->condition('quiz_vid', $this
    ->getRevisionId());
  $query
    ->addExpression('max(weight)', 'max_weight');
  $new_weight = $query
    ->execute()
    ->fetchField();
  if (empty($relationships)) {

    // Save a new relationship.
    $qqr = QuizQuestionRelationship::create([
      'quiz_id' => $this
        ->id(),
      'quiz_vid' => $this
        ->getRevisionId(),
      'question_id' => $quiz_question
        ->id(),
      'question_vid' => $quiz_question
        ->getRevisionId(),
      'weight' => $new_weight + 1,
    ]);
    $qqr
      ->save();
    return $qqr;
  }
  else {
    return reset($relationships);
  }

  // @todo update the max score of the quiz.
  // quiz_update_max_score_properties(array($quiz->vid));
}