public function ChoiceQuestion::validate in Quiz 6.6

Implementation of validate

(non-PHPdoc)

Overrides QuizQuestion::validate

See also

sites/all/modules/quiz-HEAD/question_types/quiz_question/QuizQuestion#validate()

File

question_types/choice/choice.classes.inc, line 161

The main classes for the choice question type.

Class

ChoiceQuestion

Implementation of QuizQuestion.

Code

public function validate($node, &$form) {
  if ($node->choice_multi == 0) {
    $found_one_correct = FALSE;
    for ($i = 0; is_array($this->node->alternatives[$i]); $i++) {
      $short = $this->node->alternatives[$i];
      if (strlen(strip_tags($short['answer'])) < 1) {
        continue;
      }
      if ($short['correct'] == 1) {
        if ($found_one_correct) {
          form_set_error("choice_multi", t('You have several alternatives marked as correct. If this is done intentionally you must must allow multiple alternatives to be correct.'));
        }
        else {
          $found_one_correct = TRUE;
        }
      }
    }
    if (!$found_one_correct) {
      form_set_error('choice_multi', t('You have not marked any alternatives as correct. If there are no correct alternatives you should allow multiple answers.'));
    }
  }
  else {
    for ($i = 0; is_array($this->node->alternatives[$i]); $i++) {
      $short = $this->node->alternatives[$i];
      if (strlen(strip_tags($short['answer'])) < 1) {
        continue;
      }
      if ($short['score_if_chosen'] < $short['score_if_not_chosen'] && $short['correct']) {
        form_set_error("alternatives][{$i}][score_if_not_chosen", t('The alternative is marked as correct, but gives more points if you don\'t select it.'));
      }
      elseif ($short['score_if_chosen'] > $short['score_if_not_chosen'] && !$short['correct']) {
        form_set_error("alternatives][{$i}][score_if_chosen", t('The alternative is not marked as correct, but gives more points if you select it.'));
      }
    }
  }
}