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 use mod_quiz\quiz_attempt;
  32
  33 require_once(__DIR__ . '/../../config.php');
  34 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  35
  36 // Remember the current time as the time any responses were submitted
  37 // (so as to make sure students don't get penalized for slow processing on this page).
  38 $timenow = time();
  39
  40 // Get submitted parameters.
  41 $attemptid     = required_param('attempt',  PARAM_INT);
  42 $thispage      = optional_param('thispage', 0, PARAM_INT);
  43 $nextpage      = optional_param('nextpage', 0, PARAM_INT);
  44 $previous      = optional_param('previous',      false, PARAM_BOOL);
  45 $next          = optional_param('next',          false, PARAM_BOOL);
  46 $finishattempt = optional_param('finishattempt', false, PARAM_BOOL);
  47 $timeup        = optional_param('timeup',        0,      PARAM_BOOL); // True if form was submitted by timer.
  48 $mdlscrollto   = optional_param('mdlscrollto', '', PARAM_RAW);
  49 $cmid          = optional_param('cmid', null, PARAM_INT);
  50
  51 $attemptobj = quiz_create_attempt_handling_errors($attemptid, $cmid);
  52
  53 // Set $nexturl now.
  54 if ($next) {
  55     $page = $nextpage;
  56 } else if ($previous && $thispage > 0) {
  57     $page = $thispage - 1;
  58 } else {
  59     $page = $thispage;
  60 }
  61 if ($page == -1) {
  62     $nexturl = $attemptobj->summary_url();
  63 } else {
  64     $nexturl = $attemptobj->attempt_url(null, $page);
  65     if ($mdlscrollto !== '') {
  66         $nexturl->param('mdlscrollto', $mdlscrollto);
  67     }
  68 }
  69
  70 // Check login.
  71 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  72 require_sesskey();
  73
  74 // Check that this attempt belongs to this user.
  75 if ($attemptobj->get_userid() != $USER->id) {
  76     throw new moodle_exception('notyourattempt', 'quiz', $attemptobj->view_url());
  77 }
  78
  79 // Check capabilities.
  80 if (!$attemptobj->is_preview_user()) {
  81     $attemptobj->require_capability('mod/quiz:attempt');
  82 }
  83
  84 // If the attempt is already closed, send them to the review page.
  85 if ($attemptobj->is_finished()) {
  86     throw new moodle_exception('attemptalreadyclosed', 'quiz', $attemptobj->view_url());
  87 }
  88
  89 // If this page cannot be accessed, notify user and send them to the correct page.
  90 if (!$finishattempt && !$attemptobj->check_page_access($thispage)) {
  91     throw new moodle_exception('submissionoutofsequencefriendlymessage', 'question',
  92             $attemptobj->attempt_url(null, $attemptobj->get_currentpage()));
  93 }
  94
  95 // Process the attempt, getting the new status for the attempt.
  96 $status = $attemptobj->process_attempt($timenow, $finishattempt, $timeup, $thispage);
  97
  98 if ($status == quiz_attempt::OVERDUE) {
  99     redirect($attemptobj->summary_url());
 100 } else if ($status == quiz_attempt::IN_PROGRESS) {
 101     redirect($nexturl);
 102 } else {
 103     // Attempt abandoned or finished.
 104     redirect($attemptobj->review_url());
 105 }