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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   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  $cmid = optional_param('cmid', null, PARAM_INT);
  43  
  44  $attemptobj = quiz_create_attempt_handling_errors($attemptid, $cmid);
  45  $page = $attemptobj->force_page_number_into_range($page);
  46  $PAGE->set_url($attemptobj->attempt_url(null, $page));
  47  // During quiz attempts, the browser back/forwards buttons should force a reload.
  48  $PAGE->set_cacheable(false);
  49  
  50  // Check login.
  51  require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  52  
  53  // Check that this attempt belongs to this user.
  54  if ($attemptobj->get_userid() != $USER->id) {
  55      if ($attemptobj->has_capability('mod/quiz:viewreports')) {
  56          redirect($attemptobj->review_url(null, $page));
  57      } else {
  58          throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
  59      }
  60  }
  61  
  62  // Check capabilities and block settings.
  63  if (!$attemptobj->is_preview_user()) {
  64      $attemptobj->require_capability('mod/quiz:attempt');
  65      if (empty($attemptobj->get_quiz()->showblocks)) {
  66          $PAGE->blocks->show_only_fake_blocks();
  67      }
  68  
  69  } else {
  70      navigation_node::override_active_url($attemptobj->start_attempt_url());
  71  }
  72  
  73  // If the attempt is already closed, send them to the review page.
  74  if ($attemptobj->is_finished()) {
  75      redirect($attemptobj->review_url(null, $page));
  76  } else if ($attemptobj->get_state() == quiz_attempt::OVERDUE) {
  77      redirect($attemptobj->summary_url());
  78  }
  79  
  80  // Check the access rules.
  81  $accessmanager = $attemptobj->get_access_manager(time());
  82  $accessmanager->setup_attempt_page($PAGE);
  83  $output = $PAGE->get_renderer('mod_quiz');
  84  $messages = $accessmanager->prevent_access();
  85  if (!$attemptobj->is_preview_user() && $messages) {
  86      print_error('attempterror', 'quiz', $attemptobj->view_url(),
  87              $output->access_messages($messages));
  88  }
  89  if ($accessmanager->is_preflight_check_required($attemptobj->get_attemptid())) {
  90      redirect($attemptobj->start_attempt_url(null, $page));
  91  }
  92  
  93  // Set up auto-save if required.
  94  $autosaveperiod = get_config('quiz', 'autosaveperiod');
  95  if ($autosaveperiod) {
  96      $PAGE->requires->yui_module('moodle-mod_quiz-autosave',
  97              'M.mod_quiz.autosave.init', array($autosaveperiod));
  98  }
  99  
 100  // Log this page view.
 101  $attemptobj->fire_attempt_viewed_event();
 102  
 103  // Get the list of questions needed by this page.
 104  $slots = $attemptobj->get_slots($page);
 105  
 106  // Check.
 107  if (empty($slots)) {
 108      throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'noquestionsfound');
 109  }
 110  
 111  // Update attempt page, redirecting the user if $page is not valid.
 112  if (!$attemptobj->set_currentpage($page)) {
 113      redirect($attemptobj->start_attempt_url(null, $attemptobj->get_currentpage()));
 114  }
 115  
 116  // Initialise the JavaScript.
 117  $headtags = $attemptobj->get_html_head_contributions($page);
 118  $PAGE->requires->js_init_call('M.mod_quiz.init_attempt_form', null, false, quiz_get_js_module());
 119  
 120  // Arrange for the navigation to be displayed in the first region on the page.
 121  $navbc = $attemptobj->get_navigation_panel($output, 'quiz_attempt_nav_panel', $page);
 122  $regions = $PAGE->blocks->get_regions();
 123  $PAGE->blocks->add_fake_block($navbc, reset($regions));
 124  
 125  $headtags = $attemptobj->get_html_head_contributions($page);
 126  $PAGE->set_title($attemptobj->attempt_page_title($page));
 127  $PAGE->set_heading($attemptobj->get_course()->fullname);
 128  
 129  if ($attemptobj->is_last_page($page)) {
 130      $nextpage = -1;
 131  } else {
 132      $nextpage = $page + 1;
 133  }
 134  
 135  echo $output->attempt_page($attemptobj, $page, $accessmanager, $messages, $slots, $id, $nextpage);