PHP quiz_delete_all_attempts函數代碼示例

/**
 * 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;
}

/**
 * Actual implementation of the reset course functionality, delete all the
 * quiz attempts for course $data->courseid, if $data->reset_quiz_attempts is
 * set and true.
 *
 * Also, move the quiz open and close dates, if the course start date is changing.
 *
 * @global stdClass
 * @global object
 * @param object $data the data submitted from the reset course.
 * @return array status array
 */
function quiz_reset_userdata($data) {
    global $CFG, $DB;
    require_once($CFG->libdir.'/questionlib.php');

    $componentstr = get_string('modulenameplural', 'quiz');
    $status = array();

    /// Delete attempts.
    if (!empty($data->reset_quiz_attempts)) {
        $quizzes = $DB->get_records('quiz', array('course' => $data->courseid));
        foreach ($quizzes as $quiz) {
            quiz_delete_all_attempts($quiz);
        }

        // remove all grades from gradebook
        if (empty($data->reset_gradebook_grades)) {
            quiz_reset_gradebook($data->courseid);
        }
        $status[] = array('component' => $componentstr, 'item' => get_string('attemptsdeleted', 'quiz'), 'error' => false);
    }

    /// updating dates - shift may be negative too
    if ($data->timeshift) {
        shift_course_mod_dates('quiz', array('timeopen', 'timeclose'), $data->timeshift, $data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('openclosedatesupdated', 'quiz'), 'error' => false);
    }

    return $status;
}

/**
 * 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;
}

            emarking_insert_user_answers($choices, $user, $attemptid);
        }
        echo $OUTPUT->notification(get_string('csvimportsuccessfull', 'mod_emarking'), 'notifysuccess');
        echo $OUTPUT->single_button(new moodle_url('/mod/emarking/orm/processomr.php', array('cmid' => $cm->id, 'finish' => true)), get_string('finish', 'mod_emarking'));
    } else {
        $answersform->display();
    }
    echo $OUTPUT->footer();
    die;
}
// Get the users enrolled
$users = emarking_get_enroled_students($course->id);
$pbar = new progress_bar();
$pbar->create();
if ($create) {
    quiz_delete_all_attempts($quiz);
}
$cur = 1;
$total = count($users);
// Insert answers or finish the attempt for each student
foreach ($users as $user) {
    $pbar->update($cur, $total, get_string('processing', 'mod_emarking') . $user->lastname . $user->firstname);
    flush();
    // Get the quiz instance for the specific student
    $quizobj = quiz::create($cm->instance, $user->id);
    // Get all the attempts
    $attempts = quiz_get_user_attempts($quizobj->get_quizid(), $user->id, 'all');
    if ($create) {
        emarking_add_user_attempt($cm, $user);
    } else {
        // For each attempt insert the answers or finish