Current File : /home/vacivi36/ava/mod/quiz/cronlib.php
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Library code used by quiz cron.
*
* @package mod_quiz
* @copyright 2012 the Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/mod/quiz/locallib.php');
/**
* This class holds all the code for automatically updating all attempts that have
* gone over their time limit.
*
* @copyright 2012 the Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mod_quiz_overdue_attempt_updater {
/**
* Do the processing required.
* @param int $timenow the time to consider as 'now' during the processing.
* @param int $processto only process attempt with timecheckstate longer ago than this.
* @return array with two elements, the number of attempt considered, and how many different quizzes that was.
*/
public function update_overdue_attempts($timenow, $processto) {
global $DB;
$attemptstoprocess = $this->get_list_of_overdue_attempts($processto);
$course = null;
$quiz = null;
$cm = null;
$count = 0;
$quizcount = 0;
foreach ($attemptstoprocess as $attempt) {
try {
// If we have moved on to a different quiz, fetch the new data.
if (!$quiz || $attempt->quiz != $quiz->id) {
$quiz = $DB->get_record('quiz', array('id' => $attempt->quiz), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('quiz', $attempt->quiz);
$quizcount += 1;
}
// If we have moved on to a different course, fetch the new data.
if (!$course || $course->id != $quiz->course) {
$course = $DB->get_record('course', array('id' => $quiz->course), '*', MUST_EXIST);
}
// Make a specialised version of the quiz settings, with the relevant overrides.
$quizforuser = clone($quiz);
$quizforuser->timeclose = $attempt->usertimeclose;
$quizforuser->timelimit = $attempt->usertimelimit;
// Trigger any transitions that are required.
$attemptobj = new quiz_attempt($attempt, $quizforuser, $cm, $course);
$attemptobj->handle_if_time_expired($timenow, false);
$count += 1;
} catch (moodle_exception $e) {
// If an error occurs while processing one attempt, don't let that kill cron.
mtrace("Error while processing attempt {$attempt->id} at {$attempt->quiz} quiz:");
mtrace($e->getMessage());
mtrace($e->getTraceAsString());
// Close down any currently open transactions, otherwise one error
// will stop following DB changes from being committed.
$DB->force_transaction_rollback();
}
}
$attemptstoprocess->close();
return array($count, $quizcount);
}
/**
* @return moodle_recordset of quiz_attempts that need to be processed because time has
* passed. The array is sorted by courseid then quizid.
*/
public function get_list_of_overdue_attempts($processto) {
global $DB;
// SQL to compute timeclose and timelimit for each attempt:
$quizausersql = quiz_get_attempt_usertime_sql(
"iquiza.state IN ('inprogress', 'overdue') AND iquiza.timecheckstate <= :iprocessto");
// This query should have all the quiz_attempts columns.
return $DB->get_recordset_sql("
SELECT quiza.*,
quizauser.usertimeclose,
quizauser.usertimelimit
FROM {quiz_attempts} quiza
JOIN {quiz} quiz ON quiz.id = quiza.quiz
JOIN ( $quizausersql ) quizauser ON quizauser.id = quiza.id
WHERE quiza.state IN ('inprogress', 'overdue')
AND quiza.timecheckstate <= :processto
ORDER BY quiz.course, quiza.quiz",
array('processto' => $processto, 'iprocessto' => $processto));
}
}
Mini Shell