Exemplo n.º 1
0
/**
 * Given an ID of an instance of this module,
 * this function will permanently delete the instance
 * and any data that depends on it.
 *
 * @param int $id the id of the quiz to delete.
 * @return bool success or failure.
 */
function quiz_delete_instance($id) {
    global $DB;

    $quiz = $DB->get_record('quiz', array('id' => $id), '*', MUST_EXIST);

    quiz_delete_all_attempts($quiz);
    quiz_delete_all_overrides($quiz);

    $DB->delete_records('quiz_question_instances', array('quiz' => $quiz->id));
    $DB->delete_records('quiz_feedback', array('quizid' => $quiz->id));

    $events = $DB->get_records('event', array('modulename' => 'quiz', 'instance' => $quiz->id));
    foreach ($events as $event) {
        $event = calendar_event::load($event);
        $event->delete();
    }

    quiz_grade_item_delete($quiz);
    $DB->delete_records('quiz', array('id' => $quiz->id));

    return true;
}
Exemplo n.º 2
0
Arquivo: lib.php Projeto: dg711/moodle
/**
 * Given an ID of an instance of this module,
 * this function will permanently delete the instance
 * and any data that depends on it.
 *
 * @param int $id the id of the quiz to delete.
 * @return bool success or failure.
 */
function quiz_delete_instance($id)
{
    global $DB;
    $quiz = $DB->get_record('quiz', array('id' => $id), '*', MUST_EXIST);
    quiz_delete_all_attempts($quiz);
    quiz_delete_all_overrides($quiz);
    // Look for random questions that may no longer be used when this quiz is gone.
    $sql = "SELECT q.id\n              FROM {quiz_slots} slot\n              JOIN {question} q ON q.id = slot.questionid\n             WHERE slot.quizid = ? AND q.qtype = ?";
    $questionids = $DB->get_fieldset_sql($sql, array($quiz->id, 'random'));
    // We need to do this before we try and delete randoms, otherwise they would still be 'in use'.
    $DB->delete_records('quiz_slots', array('quizid' => $quiz->id));
    $DB->delete_records('quiz_sections', array('quizid' => $quiz->id));
    foreach ($questionids as $questionid) {
        question_delete_question($questionid);
    }
    $DB->delete_records('quiz_feedback', array('quizid' => $quiz->id));
    quiz_access_manager::delete_settings($quiz);
    $events = $DB->get_records('event', array('modulename' => 'quiz', 'instance' => $quiz->id));
    foreach ($events as $event) {
        $event = calendar_event::load($event);
        $event->delete();
    }
    quiz_grade_item_delete($quiz);
    $DB->delete_records('quiz', array('id' => $quiz->id));
    return true;
}