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

   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * This page prints a particular instance of lesson
  20   *
  21   * @package mod_lesson
  22   * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or late
  24   **/
  25  
  26  define('NO_OUTPUT_BUFFERING', true);
  27  
  28  require_once(__DIR__ . '/../../config.php');
  29  require_once($CFG->dirroot.'/mod/lesson/locallib.php');
  30  require_once($CFG->libdir . '/grade/constants.php');
  31  
  32  $id      = required_param('id', PARAM_INT);             // Course Module ID
  33  $pageid  = optional_param('pageid', null, PARAM_INT);   // Lesson Page ID
  34  $edit    = optional_param('edit', -1, PARAM_BOOL);
  35  $userpassword = optional_param('userpassword','',PARAM_RAW);
  36  $backtocourse = optional_param('backtocourse', false, PARAM_RAW);
  37  
  38  $cm = get_coursemodule_from_id('lesson', $id, 0, false, MUST_EXIST);
  39  $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  40  $lesson = new lesson($DB->get_record('lesson', array('id' => $cm->instance), '*', MUST_EXIST), $cm, $course);
  41  
  42  require_login($course, false, $cm);
  43  
  44  if ($backtocourse) {
  45      redirect(new moodle_url('/course/view.php', array('id'=>$course->id)));
  46  }
  47  
  48  // Apply overrides.
  49  $lesson->update_effective_access($USER->id);
  50  
  51  $url = new moodle_url('/mod/lesson/view.php', array('id'=>$id));
  52  if ($pageid !== null) {
  53      $url->param('pageid', $pageid);
  54  }
  55  $PAGE->set_url($url);
  56  $PAGE->force_settings_menu();
  57  
  58  $context = $lesson->context;
  59  $canmanage = $lesson->can_manage();
  60  
  61  $lessonoutput = $PAGE->get_renderer('mod_lesson');
  62  
  63  $reviewmode = $lesson->is_in_review_mode();
  64  
  65  if ($lesson->usepassword && !empty($userpassword)) {
  66      require_sesskey();
  67  }
  68  
  69  // Check these for students only TODO: Find a better method for doing this!
  70  if ($timerestriction = $lesson->get_time_restriction_status()) {  // Deadline restrictions.
  71      echo $lessonoutput->header($lesson, $cm, '', false, null, get_string('notavailable'));
  72      // No need to display warnings because activity dates are displayed at the top of the page.
  73      echo $lessonoutput->lesson_inaccessible('');
  74      echo $lessonoutput->footer();
  75      exit();
  76  } else if ($passwordrestriction = $lesson->get_password_restriction_status($userpassword)) { // Password protected lesson code.
  77      echo $lessonoutput->header($lesson, $cm, '', false, null, get_string('passwordprotectedlesson', 'lesson', format_string($lesson->name)));
  78      echo $lessonoutput->login_prompt($lesson, $userpassword !== '');
  79      echo $lessonoutput->footer();
  80      exit();
  81  } else if ($dependenciesrestriction = $lesson->get_dependencies_restriction_status()) { // Check for dependencies.
  82      echo $lessonoutput->header($lesson, $cm, '', false, null, get_string('completethefollowingconditions', 'lesson', format_string($lesson->name)));
  83      echo $lessonoutput->dependancy_errors($dependenciesrestriction->dependentlesson, $dependenciesrestriction->errors);
  84      echo $lessonoutput->footer();
  85      exit();
  86  }
  87  
  88  // This is called if a student leaves during a lesson.
  89  if ($pageid == LESSON_UNSEENBRANCHPAGE) {
  90      $pageid = lesson_unseen_question_jump($lesson, $USER->id, $pageid);
  91  }
  92  
  93  // To avoid multiple calls, store the magic property firstpage.
  94  $lessonfirstpage = $lesson->firstpage;
  95  $lessonfirstpageid = $lessonfirstpage ? $lessonfirstpage->id : false;
  96  
  97  // display individual pages and their sets of answers
  98  // if pageid is EOL then the end of the lesson has been reached
  99  // for flow, changed to simple echo for flow styles, michaelp, moved lesson name and page title down
 100  $attemptflag = false;
 101  if (empty($pageid)) {
 102      // make sure there are pages to view
 103      if (!$lessonfirstpageid) {
 104          if (!$canmanage) {
 105              $lesson->add_message(get_string('lessonnotready2', 'lesson')); // a nice message to the student
 106          } else {
 107              if (!$DB->count_records('lesson_pages', array('lessonid'=>$lesson->id))) {
 108                  redirect("$CFG->wwwroot/mod/lesson/edit.php?id=$cm->id"); // no pages - redirect to add pages
 109              } else {
 110                  $lesson->add_message(get_string('lessonpagelinkingbroken', 'lesson'));  // ok, bad mojo
 111              }
 112          }
 113      }
 114  
 115      // if no pageid given see if the lesson has been started
 116      $retries = $lesson->count_user_retries($USER->id);
 117      if ($retries > 0) {
 118          $attemptflag = true;
 119      }
 120  
 121      if (isset($USER->modattempts[$lesson->id])) {
 122          unset($USER->modattempts[$lesson->id]);  // if no pageid, then student is NOT reviewing
 123      }
 124  
 125      $lastpageseen = $lesson->get_last_page_seen($retries);
 126  
 127      // Check if the lesson was attempted in an external device like the mobile app.
 128      // This check makes sense only when the lesson allows offline attempts.
 129      if ($lesson->allowofflineattempts && $timers = $lesson->get_user_timers($USER->id, 'starttime DESC', '*', 0, 1)) {
 130          $timer = current($timers);
 131          if (!empty($timer->timemodifiedoffline)) {
 132              $lasttime = format_time(time() - $timer->timemodifiedoffline);
 133              $lesson->add_message(get_string('offlinedatamessage', 'lesson', $lasttime), 'warning');
 134          }
 135      }
 136  
 137      // Check to see if end of lesson was reached.
 138      if (($lastpageseen !== false && ($lastpageseen != LESSON_EOL))) {
 139          // End not reached. Check if the user left.
 140          if ($lesson->left_during_timed_session($retries)) {
 141  
 142              echo $lessonoutput->header($lesson, $cm, '', false, null, get_string('leftduringtimedsession', 'lesson'));
 143              if ($lesson->timelimit) {
 144                  if ($lesson->retake) {
 145                      $continuelink = new single_button(new moodle_url('/mod/lesson/view.php',
 146                              array('id' => $cm->id, 'pageid' => $lesson->firstpageid, 'startlastseen' => 'no')),
 147                              get_string('continue', 'lesson'), 'get');
 148  
 149                      echo html_writer::div($lessonoutput->message(get_string('leftduringtimed', 'lesson'), $continuelink),
 150                              'center leftduring');
 151  
 152                  } else {
 153                      $courselink = new single_button(new moodle_url('/course/view.php',
 154                              array('id' => $PAGE->course->id)), get_string('returntocourse', 'lesson'), 'get');
 155  
 156                      echo html_writer::div($lessonoutput->message(get_string('leftduringtimednoretake', 'lesson'), $courselink),
 157                              'center leftduring');
 158                  }
 159              } else {
 160                  echo $lessonoutput->continue_links($lesson, $lastpageseen);
 161              }
 162              echo $lessonoutput->footer();
 163              exit();
 164          }
 165      }
 166  
 167      if ($attemptflag) {
 168          if (!$lesson->retake) {
 169              echo $lessonoutput->header($lesson, $cm, 'view', '', null, get_string("noretake", "lesson"));
 170              $courselink = new single_button(new moodle_url('/course/view.php', array('id'=>$PAGE->course->id)), get_string('returntocourse', 'lesson'), 'get');
 171              echo $lessonoutput->message(get_string("noretake", "lesson"), $courselink);
 172              echo $lessonoutput->footer();
 173              exit();
 174          }
 175      }
 176      // start at the first page
 177      if (!$pageid = $lessonfirstpageid) {
 178          echo $lessonoutput->header($lesson, $cm, 'view', '', null);
 179          // Lesson currently has no content. A message for display has been prepared and will be displayed by the header method
 180          // of the lesson renderer.
 181          echo $lessonoutput->footer();
 182          exit();
 183      }
 184      /// This is the code for starting a timed test
 185      if(!isset($USER->startlesson[$lesson->id]) && !$canmanage) {
 186          $lesson->start_timer();
 187      }
 188  }
 189  
 190  $currenttab = 'view';
 191  $extraeditbuttons = false;
 192  $lessonpageid = null;
 193  $timer = null;
 194  
 195  if ($pageid != LESSON_EOL) {
 196  
 197      $lesson->set_module_viewed();
 198  
 199      $timer = null;
 200      // This is the code updates the lessontime for a timed test.
 201      $startlastseen = optional_param('startlastseen', '', PARAM_ALPHA);
 202  
 203      // Check to see if the user can see the left menu.
 204      if (!$canmanage) {
 205          $lesson->displayleft = lesson_displayleftif($lesson);
 206  
 207          $continue = ($startlastseen !== '');
 208          $restart  = ($continue && $startlastseen == 'yes');
 209          $timer = $lesson->update_timer($continue, $restart);
 210  
 211          // Check time limit.
 212          if (!$lesson->check_time($timer)) {
 213              redirect(new moodle_url('/mod/lesson/view.php', array('id' => $cm->id, 'pageid' => LESSON_EOL, 'outoftime' => 'normal')));
 214              die; // Shouldn't be reached, but make sure.
 215          }
 216      }
 217  
 218      list($newpageid, $page, $lessoncontent) = $lesson->prepare_page_and_contents($pageid, $lessonoutput, $reviewmode);
 219  
 220      if (($edit != -1) && $PAGE->user_allowed_editing()) {
 221          $USER->editing = $edit;
 222      }
 223  
 224      $PAGE->set_subpage($page->id);
 225      $currenttab = 'view';
 226      $extraeditbuttons = true;
 227      $lessonpageid = $page->id;
 228      $extrapagetitle = $page->title;
 229  
 230      lesson_add_fake_blocks($PAGE, $cm, $lesson, $timer);
 231      echo $lessonoutput->header($lesson, $cm, $currenttab, $extraeditbuttons, $lessonpageid, $extrapagetitle);
 232      if ($attemptflag) {
 233          // We are using level 3 header because attempt heading is a sub-heading of lesson title (MDL-30911).
 234          echo $OUTPUT->heading(get_string('attempt', 'lesson', $retries), 3);
 235      }
 236      // This calculates and prints the ongoing score.
 237      if ($lesson->ongoing && !empty($pageid) && !$reviewmode) {
 238          echo $lessonoutput->ongoing_score($lesson);
 239      }
 240      if ($lesson->displayleft) {
 241          echo '<a name="maincontent" id="maincontent" title="' . get_string('anchortitle', 'lesson') . '"></a>';
 242      }
 243      echo $lessoncontent;
 244      echo $lessonoutput->progress_bar($lesson);
 245      echo $lessonoutput->footer();
 246  
 247  } else {
 248  
 249      // End of lesson reached work out grade.
 250      // Used to check to see if the student ran out of time.
 251      $outoftime = optional_param('outoftime', '', PARAM_ALPHA);
 252  
 253      $data = $lesson->process_eol_page($outoftime);
 254      $lessoncontent = $lessonoutput->display_eol_page($lesson, $data);
 255  
 256      lesson_add_fake_blocks($PAGE, $cm, $lesson, $timer);
 257      echo $lessonoutput->header($lesson, $cm, $currenttab, $extraeditbuttons, $lessonpageid, get_string("congratulations", "lesson"));
 258      echo $lessoncontent;
 259      echo $lessonoutput->footer();
 260  }