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 use mod_quiz\output\navigation_panel_attempt;
  26 use mod_quiz\output\renderer;
  27 use mod_quiz\quiz_attempt;
  28
  29 require_once(__DIR__ . '/../../config.php');
  30 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  31
  32 // Look for old-style URLs, such as may be in the logs, and redirect them to startattemtp.php.
  33 if ($id = optional_param('id', 0, PARAM_INT)) {
  34     redirect($CFG->wwwroot . '/mod/quiz/startattempt.php?cmid=' . $id . '&sesskey=' . sesskey());
  35 } else if ($qid = optional_param('q', 0, PARAM_INT)) {
  36     if (!$cm = get_coursemodule_from_instance('quiz', $qid)) {
  37         throw new \moodle_exception('invalidquizid', 'quiz');
  38     }
  39     redirect(new moodle_url('/mod/quiz/startattempt.php',
  40             ['cmid' => $cm->id, 'sesskey' => sesskey()]));
  41 }
  42
  43 // Get submitted parameters.
  44 $attemptid = required_param('attempt', PARAM_INT);
  45 $page = optional_param('page', 0, PARAM_INT);
  46 $cmid = optional_param('cmid', null, PARAM_INT);
  47
  48 $attemptobj = quiz_create_attempt_handling_errors($attemptid, $cmid);
  49 $page = $attemptobj->force_page_number_into_range($page);
  50 $PAGE->set_url($attemptobj->attempt_url(null, $page));
  51 // During quiz attempts, the browser back/forwards buttons should force a reload.
  52 $PAGE->set_cacheable(false);
  53
  54 $PAGE->set_secondary_active_tab("modulepage");
  55
  56 // Check login.
  57 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  58
  59 // Check that this attempt belongs to this user.
  60 if ($attemptobj->get_userid() != $USER->id) {
  61     if ($attemptobj->has_capability('mod/quiz:viewreports')) {
  62         redirect($attemptobj->review_url(null, $page));
  63     } else {
  64         throw new moodle_exception('notyourattempt', 'quiz', $attemptobj->view_url());
  65     }
  66 }
  67
  68 // Check capabilities and block settings.
  69 if (!$attemptobj->is_preview_user()) {
  70     $attemptobj->require_capability('mod/quiz:attempt');
  71     if (empty($attemptobj->get_quiz()->showblocks)) {
  72         $PAGE->blocks->show_only_fake_blocks();
  73     }
  74
  75 } else {
  76     navigation_node::override_active_url($attemptobj->start_attempt_url());
  77 }
  78
  79 // If the attempt is already closed, send them to the review page.
  80 if ($attemptobj->is_finished()) {
  81     redirect($attemptobj->review_url(null, $page));
  82 } else if ($attemptobj->get_state() == quiz_attempt::OVERDUE) {
  83     redirect($attemptobj->summary_url());
  84 }
  85
  86 // Check the access rules.
  87 $accessmanager = $attemptobj->get_access_manager(time());
  88 $accessmanager->setup_attempt_page($PAGE);
  89 /** @var renderer $output */
  90 $output = $PAGE->get_renderer('mod_quiz');
  91 $messages = $accessmanager->prevent_access();
  92 if (!$attemptobj->is_preview_user() && $messages) {
  93     throw new \moodle_exception('attempterror', 'quiz', $attemptobj->view_url(),
  94             $output->access_messages($messages));
  95 }
  96 if ($accessmanager->is_preflight_check_required($attemptobj->get_attemptid())) {
  97     redirect($attemptobj->start_attempt_url(null, $page));
  98 }
  99
 100 // Set up auto-save if required.
 101 $autosaveperiod = get_config('quiz', 'autosaveperiod');
 102 if ($autosaveperiod) {
 103     $PAGE->requires->string_for_js('strftimedatetimeshortaccurate', 'langconfig');
 104     $PAGE->requires->string_for_js('lastautosave', 'quiz');
 105     $PAGE->requires->yui_module('moodle-mod_quiz-autosave',
 106             'M.mod_quiz.autosave.init', [$autosaveperiod]);
 107 }
 108
 109 // Log this page view.
 110 $attemptobj->fire_attempt_viewed_event();
 111
 112 // Get the list of questions needed by this page.
 113 $slots = $attemptobj->get_slots($page);
 114
 115 // Check.
 116 if (empty($slots)) {
 117     throw new moodle_exception('noquestionsfound', 'quiz', $attemptobj->view_url());
 118 }
 119
 120 // Update attempt page, redirecting the user if $page is not valid.
 121 if (!$attemptobj->set_currentpage($page)) {
 122     redirect($attemptobj->start_attempt_url(null, $attemptobj->get_currentpage()));
 123 }
 124
 125 if ($attemptobj->is_own_preview()) {
 126     $attemptobj->update_questions_to_new_version_if_changed();
 127 }
 128
 129 // Initialise the JavaScript.
 130 $headtags = $attemptobj->get_html_head_contributions($page);
 131 $PAGE->requires->js_init_call('M.mod_quiz.init_attempt_form', null, false, quiz_get_js_module());
 132 \core\session\manager::keepalive(); // Try to prevent sessions expiring during quiz attempts.
 133
 134 // Arrange for the navigation to be displayed in the first region on the page.
 135 $navbc = $attemptobj->get_navigation_panel($output, navigation_panel_attempt::class, $page);
 136 $regions = $PAGE->blocks->get_regions();
 137 $PAGE->blocks->add_fake_block($navbc, reset($regions));
 138
 139 $headtags = $attemptobj->get_html_head_contributions($page);
 140 $PAGE->set_title($attemptobj->attempt_page_title($page));
 141 $PAGE->add_body_class('limitedwidth');
 142 $PAGE->set_heading($attemptobj->get_course()->fullname);
 143 $PAGE->activityheader->disable();
 144 if ($attemptobj->is_last_page($page)) {
 145     $nextpage = -1;
 146 } else {
 147     $nextpage = $page + 1;
 148 }
 149
 150 echo $output->attempt_page($attemptobj, $page, $accessmanager, $messages, $slots, $id, $nextpage);