mod/quiz/grade.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * This page is the entry page into the quiz UI. Displays information about the
  19  * quiz to students and teachers, and lets students see their previous attempts.
  20  *
  21  * @package   mod_quiz
  22  * @category  grade
  23  * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
  24  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27
  28 require_once(__DIR__ . '/../../config.php');
  29 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  30 require_once($CFG->dirroot . '/mod/quiz/report/reportlib.php');
  31
  32
  33 $id = required_param('id', PARAM_INT);
  34 $userid = optional_param('userid', 0, PARAM_INT);
  35
  36 $cm = get_coursemodule_from_id('quiz', $id, 0, false, MUST_EXIST);
  37 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  38 $quiz = $DB->get_record('quiz', array('id' => $cm->instance), '*', MUST_EXIST);
  39 require_login($course, false, $cm);
  40
  41 $reportlist = quiz_report_list(context_module::instance($cm->id));
  42 if (empty($reportlist) || $userid == $USER->id) {
  43     // If the user cannot see reports, or can see reports but is looking
  44     // at their own grades, redirect them to the view.php page.
  45     // (The looking at their own grades case is unlikely, since users who
  46     // appear in the gradebook are unlikely to be able to see quiz reports,
  47     // but it is possible.)
  48     redirect(new moodle_url('/mod/quiz/view.php', array('id' => $cm->id)));
  49 }
  50
  51 // Now we know the user is interested in reports. If they are interested in a
  52 // specific other user, try to send them to the most appropriate attempt review page.
  53 if ($userid) {
  54
  55     // Work out which attempt is most significant from a grading point of view.
  56     $attempts = quiz_get_user_attempts($quiz->id, $userid, 'finished');
  57     $attempt = null;
  58     switch ($quiz->grademethod) {
  59         case QUIZ_ATTEMPTFIRST:
  60             $attempt = reset($attempts);
  61             break;
  62
  63         case QUIZ_ATTEMPTLAST:
  64         case QUIZ_GRADEAVERAGE:
  65             $attempt = end($attempts);
  66             break;
  67
  68         case QUIZ_GRADEHIGHEST:
  69             $maxmark = 0;
  70             foreach ($attempts as $at) {
  71                 // Operator >=, since we want to most recent relevant attempt.
  72                 if ((float) $at->sumgrades >= $maxmark) {
  73                     $maxmark = $at->sumgrades;
  74                     $attempt = $at;
  75                 }
  76             }
  77             break;
  78     }
  79
  80     // If the user can review the relevant attempt, redirect to it.
  81     if ($attempt) {
  82         $attemptobj = new quiz_attempt($attempt, $quiz, $cm, $course, false);
  83         if ($attemptobj->is_review_allowed()) {
  84             redirect($attemptobj->review_url());
  85         }
  86     }
  87
  88     // Otherwise, fall thorugh to the generic case.
  89 }
  90
  91 // Send the user to the first report they can see.
  92 redirect(new moodle_url('/mod/quiz/report.php', array(
  93         'id' => $cm->id, 'mode' => reset($reportlist))));