public function TrueFalseResponse::isValid in Quiz 8.4

Implementation of isValid

Overrides QuizQuestionResponse::isValid

See also

QuizQuestionResponse#isValid()

File

question_types/truefalse/lib/Drupal/truefalse/TrueFalseResponse.php, line 36

Class

TrueFalseResponse

Namespace

Drupal\truefalse

Code

public function isValid() {
  return $this->answer === NULL ? t('You must provide an answer') : TRUE;
}