public function ScaleQuestion::deleteCollectionIfNotUsed in Quiz 6.4

Same name and namespace in other branches

1. 8.6 question_types/quiz_scale/src/Plugin/quiz/QuizQuestion/ScaleQuestion.php \ScaleQuestion::deleteCollectionIfNotUsed()
2. 8.5 question_types/quiz_scale/src/Plugin/quiz/QuizQuestion/ScaleQuestion.php \ScaleQuestion::deleteCollectionIfNotUsed()
3. 6.6 question_types/scale/scale.classes.inc \ScaleQuestion::deleteCollectionIfNotUsed()
4. 7.6 question_types/scale/scale.classes.inc \ScaleQuestion::deleteCollectionIfNotUsed()
5. 7 question_types/scale/scale.classes.inc \ScaleQuestion::deleteCollectionIfNotUsed()
6. 7.4 question_types/scale/scale.classes.inc \ScaleQuestion::deleteCollectionIfNotUsed()
7. 7.5 question_types/scale/scale.classes.inc \ScaleQuestion::deleteCollectionIfNotUsed()

Deletes an answer collection if it isn't beeing used.

Parameters

$answer_collection_id:

$accept: If collection is used more than this many times we keep it.

Return value

true if deleted, false if not deleted.

2 calls to ScaleQuestion::deleteCollectionIfNotUsed()

ScaleQuestion::delete in question_types/scale/scale.classes.inc

Implementation of delete

ScaleQuestion::saveAnswerCollection in question_types/scale/scale.classes.inc

Stores the answer collection to the database, or identifies an existing collection.

File

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

The main classes for the scale question type.

Class

ScaleQuestion

Extension of QuizQuestion.

Code

public function deleteCollectionIfNotUsed($answer_collection_id, $accept = 0) {

  // Check if the collection is someones preset. If it is we can't delete it.
  $sql = 'SELECT COUNT(*)
    		FROM {quiz_scale_user}
    		WHERE answer_collection_id = %d';
  $results = db_fetch_array(db_query($sql, $answer_collection_id));
  if ($results['COUNT(*)'] > 0) {
    return FALSE;
  }

  // Check if the collection is a global preset. If it is we can't delete it.
  $sql = 'SELECT for_all
    		FROM {quiz_scale_answer_collection}
    		WHERE id = %d';
  $results = db_fetch_object(db_query($sql, $answer_collection_id));
  if ($results->for_all == 1) {
    return FALSE;
  }

  // Check if the collection is used in an existing question. If it is we can't delete it.
  $sql = 'SELECT COUNT(*)
    		FROM {quiz_scale_node_properties}
    		WHERE answer_collection_id = %d';
  $results = db_fetch_array(db_query($sql, $answer_collection_id));

  // We delete the answer collection if it isnt beeing used by enough questions
  if ($results['COUNT(*)'] <= $accept) {
    $sql = 'DELETE FROM {quiz_scale_answer_collection}
      		  WHERE id = %d';
    db_query($sql, $answer_collection_id);
    $sql = 'DELETE FROM {quiz_scale_answer}
      		  WHERE answer_collection_id = %d';
    db_query($sql, $answer_collection_id);
    return TRUE;
  }
  return FALSE;
}