public function MultichoiceQuestion::delete in Quiz 7

Same name and namespace in other branches

1. 6.4 question_types/multichoice/multichoice.classes.inc \MultichoiceQuestion::delete()
2. 7.6 question_types/multichoice/multichoice.classes.inc \MultichoiceQuestion::delete()
3. 7.4 question_types/multichoice/multichoice.classes.inc \MultichoiceQuestion::delete()
4. 7.5 question_types/multichoice/multichoice.classes.inc \MultichoiceQuestion::delete()

Implementation of delete

Overrides QuizQuestion::delete

See also

QuizQuestion#delete()

File

question_types/multichoice/multichoice.classes.inc, line 296

The main classes for the multichoice question type.

Class

MultichoiceQuestion

Extension of QuizQuestion.

Code

public function delete($only_this_version = FALSE) {
  $delete_properties = db_delete('quiz_multichoice_properties')
    ->condition('nid', $this->node->nid);
  $delete_answers = db_delete('quiz_multichoice_answers')
    ->condition('question_nid', $this->node->nid);
  $delete_results = db_delete('quiz_multichoice_user_answers')
    ->condition('question_nid', $this->node->nid);
  if ($only_this_version) {
    $delete_properties
      ->condition('vid', $this->node->vid);
    $delete_answers
      ->condition('question_vid', $this->node->vid);
    $delete_results
      ->condition('question_vid', $this->node->vid);
  }
  $delete_properties
    ->execute();
  $delete_answers
    ->execute();
  $delete_results
    ->execute();

  // Delete from table quiz_multichoice_user_answer_multi
  $user_answer_id = array();
  if ($only_this_version) {
    $query = db_query('SELECT id FROM {quiz_multichoice_user_answers} WHERE question_nid = :nid AND question_vid = :vid AND result_id = :result_id', array(
      ':nid' => $this->node->nid,
      ':vid' => $this->node->vid,
      ':result_id' => $this->rid,
    ));
  }
  else {
    $query = db_query('SELECT id FROM {quiz_multichoice_user_answers} WHERE question_nid = :nid AND result_id = :result_id', array(
      ':nid' => $this->node->nid,
      ':result_id' => $this->rid,
    ));
  }
  while ($user_answer = $query
    ->fetch()) {
    $user_answer_id[] = $user_answer->id;
  }
  if (count($user_answer_id)) {
    db_delete('quiz_multichoice_user_answer_multi')
      ->condition('user_answer_id', $user_answer_id, 'IN')
      ->execute();
  }
  parent::delete($only_this_version);
}