mod/quiz/attempt.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 script displays a particular page of a quiz attempt that is in progress.
  19  *
  20  * @package   mod_quiz
  21  * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 require_once(__DIR__ . '/../../config.php');
  26 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  27
  28 // Look for old-style URLs, such as may be in the logs, and redirect them to startattemtp.php.
  29 if ($id = optional_param('id', 0, PARAM_INT)) {
  30     redirect($CFG->wwwroot . '/mod/quiz/startattempt.php?cmid=' . $id . '&sesskey=' . sesskey());
  31 } else if ($qid = optional_param('q', 0, PARAM_INT)) {
  32     if (!$cm = get_coursemodule_from_instance('quiz', $qid)) {
  33         print_error('invalidquizid', 'quiz');
  34     }
  35     redirect(new moodle_url('/mod/quiz/startattempt.php',
  36             array('cmid' => $cm->id, 'sesskey' => sesskey())));
  37 }
  38
  39 // Get submitted parameters.
  40 $attemptid = required_param('attempt', PARAM_INT);
  41 $page = optional_param('page', 0, PARAM_INT);
  42
  43 $attemptobj = quiz_attempt::create($attemptid);
  44 $page = $attemptobj->force_page_number_into_range($page);
  45 $PAGE->set_url($attemptobj->attempt_url(null, $page));
  46
  47 // Check login.
  48 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  49
  50 // Check that this attempt belongs to this user.
  51 if ($attemptobj->get_userid() != $USER->id) {
  52     if ($attemptobj->has_capability('mod/quiz:viewreports')) {
  53         redirect($attemptobj->review_url(null, $page));
  54     } else {
  55         throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
  56     }
  57 }
  58
  59 // Check capabilities and block settings.
  60 if (!$attemptobj->is_preview_user()) {
  61     $attemptobj->require_capability('mod/quiz:attempt');
  62     if (empty($attemptobj->get_quiz()->showblocks)) {
  63         $PAGE->blocks->show_only_fake_blocks();
  64     }
  65
  66 } else {
  67     navigation_node::override_active_url($attemptobj->start_attempt_url());
  68 }
  69
  70 // If the attempt is already closed, send them to the review page.
  71 if ($attemptobj->is_finished()) {
  72     redirect($attemptobj->review_url(null, $page));
  73 } else if ($attemptobj->get_state() == quiz_attempt::OVERDUE) {
  74     redirect($attemptobj->summary_url());
  75 }
  76
  77 // Check the access rules.
  78 $accessmanager = $attemptobj->get_access_manager(time());
  79 $accessmanager->setup_attempt_page($PAGE);
  80 $output = $PAGE->get_renderer('mod_quiz');
  81 $messages = $accessmanager->prevent_access();
  82 if (!$attemptobj->is_preview_user() && $messages) {
  83     print_error('attempterror', 'quiz', $attemptobj->view_url(),
  84             $output->access_messages($messages));
  85 }
  86 if ($accessmanager->is_preflight_check_required($attemptobj->get_attemptid())) {
  87     redirect($attemptobj->start_attempt_url(null, $page));
  88 }
  89
  90 // Set up auto-save if required.
  91 $autosaveperiod = get_config('quiz', 'autosaveperiod');
  92 if ($autosaveperiod) {
  93     $PAGE->requires->yui_module('moodle-mod_quiz-autosave',
  94             'M.mod_quiz.autosave.init', array($autosaveperiod));
  95 }
  96
  97 // Log this page view.
  98 $attemptobj->fire_attempt_viewed_event();
  99
 100 // Get the list of questions needed by this page.
 101 $slots = $attemptobj->get_slots($page);
 102
 103 // Check.
 104 if (empty($slots)) {
 105     throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'noquestionsfound');
 106 }
 107
 108 // Update attempt page, redirecting the user if $page is not valid.
 109 if (!$attemptobj->set_currentpage($page)) {
 110     redirect($attemptobj->start_attempt_url(null, $attemptobj->get_currentpage()));
 111 }
 112
 113 // Initialise the JavaScript.
 114 $headtags = $attemptobj->get_html_head_contributions($page);
 115 $PAGE->requires->js_init_call('M.mod_quiz.init_attempt_form', null, false, quiz_get_js_module());
 116
 117 // Arrange for the navigation to be displayed in the first region on the page.
 118 $navbc = $attemptobj->get_navigation_panel($output, 'quiz_attempt_nav_panel', $page);
 119 $regions = $PAGE->blocks->get_regions();
 120 $PAGE->blocks->add_fake_block($navbc, reset($regions));
 121
 122 $title = get_string('attempt', 'quiz', $attemptobj->get_attempt_number());
 123 $headtags = $attemptobj->get_html_head_contributions($page);
 124 $PAGE->set_title($attemptobj->get_quiz_name());
 125 $PAGE->set_heading($attemptobj->get_course()->fullname);
 126
 127 if ($attemptobj->is_last_page($page)) {
 128     $nextpage = -1;
 129 } else {
 130     $nextpage = $page + 1;
 131 }
 132
 133 echo $output->attempt_page($attemptobj, $page, $accessmanager, $messages, $slots, $id, $nextpage);