mod/quiz/processattempt.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 deals with processing responses during an attempt at a quiz.
  19  *
  20  * People will normally arrive here from a form submission on attempt.php or
  21  * summary.php, and once the responses are processed, they will be redirected to
  22  * attempt.php or summary.php.
  23  *
  24  * This code used to be near the top of attempt.php, if you are looking for CVS history.
  25  *
  26  * @package   mod_quiz
  27  * @copyright 2009 Tim Hunt
  28  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  29  */
  30
  31 require_once(__DIR__ . '/../../config.php');
  32 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  33
  34 // Remember the current time as the time any responses were submitted
  35 // (so as to make sure students don't get penalized for slow processing on this page).
  36 $timenow = time();
  37
  38 // Get submitted parameters.
  39 $attemptid     = required_param('attempt',  PARAM_INT);
  40 $thispage      = optional_param('thispage', 0, PARAM_INT);
  41 $nextpage      = optional_param('nextpage', 0, PARAM_INT);
  42 $previous      = optional_param('previous',      false, PARAM_BOOL);
  43 $next          = optional_param('next',          false, PARAM_BOOL);
  44 $finishattempt = optional_param('finishattempt', false, PARAM_BOOL);
  45 $timeup        = optional_param('timeup',        0,      PARAM_BOOL); // True if form was submitted by timer.
  46 $scrollpos     = optional_param('scrollpos',     '',     PARAM_RAW);
  47
  48 $attemptobj = quiz_attempt::create($attemptid);
  49
  50 // Set $nexturl now.
  51 if ($next) {
  52     $page = $nextpage;
  53 } else if ($previous && $thispage > 0) {
  54     $page = $thispage - 1;
  55 } else {
  56     $page = $thispage;
  57 }
  58 if ($page == -1) {
  59     $nexturl = $attemptobj->summary_url();
  60 } else {
  61     $nexturl = $attemptobj->attempt_url(null, $page);
  62     if ($scrollpos !== '') {
  63         $nexturl->param('scrollpos', $scrollpos);
  64     }
  65 }
  66
  67 // Check login.
  68 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  69 require_sesskey();
  70
  71 // Check that this attempt belongs to this user.
  72 if ($attemptobj->get_userid() != $USER->id) {
  73     throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
  74 }
  75
  76 // Check capabilities.
  77 if (!$attemptobj->is_preview_user()) {
  78     $attemptobj->require_capability('mod/quiz:attempt');
  79 }
  80
  81 // If the attempt is already closed, send them to the review page.
  82 if ($attemptobj->is_finished()) {
  83     throw new moodle_quiz_exception($attemptobj->get_quizobj(),
  84             'attemptalreadyclosed', null, $attemptobj->review_url());
  85 }
  86
  87 // Process the attempt, getting the new status for the attempt.
  88 $status = $attemptobj->process_attempt($timenow, $finishattempt, $timeup, $thispage);
  89
  90 if ($status == quiz_attempt::OVERDUE) {
  91     redirect($attemptobj->summary_url());
  92 } else if ($status == quiz_attempt::IN_PROGRESS) {
  93     redirect($nexturl);
  94 } else {
  95     // Attempt abandoned or finished.
  96     redirect($attemptobj->review_url());
  97 }