mod/lesson/continue.php

   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  * Action for processing page answers by users
  20  *
  21  * @package mod_lesson
  22  * @copyright  2009 Sam Hemelryk
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  **/
  25
  26 /** Require the specific libraries */
  27 require_once("../../config.php");
  28 require_once($CFG->dirroot.'/mod/lesson/locallib.php');
  29
  30 $id = required_param('id', PARAM_INT);
  31
  32 $cm = get_coursemodule_from_id('lesson', $id, 0, false, MUST_EXIST);
  33 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  34 $lesson = new lesson($DB->get_record('lesson', array('id' => $cm->instance), '*', MUST_EXIST));
  35
  36 require_login($course, false, $cm);
  37 require_sesskey();
  38
  39 // Apply overrides.
  40 $lesson->update_effective_access($USER->id);
  41
  42 $context = context_module::instance($cm->id);
  43 $canmanage = has_capability('mod/lesson:manage', $context);
  44 $lessonoutput = $PAGE->get_renderer('mod_lesson');
  45
  46 $url = new moodle_url('/mod/lesson/continue.php', array('id'=>$cm->id));
  47 $PAGE->set_url($url);
  48 $PAGE->set_pagetype('mod-lesson-view');
  49 $PAGE->navbar->add(get_string('continue', 'lesson'));
  50
  51 // This is the code updates the lesson time for a timed test
  52 // get time information for this user
  53 if (!$canmanage) {
  54     $lesson->displayleft = lesson_displayleftif($lesson);
  55     $timer = $lesson->update_timer();
  56     if ($lesson->timelimit) {
  57         $timeleft = ($timer->starttime + $lesson->timelimit) - time();
  58         if ($timeleft <= 0) {
  59             // Out of time
  60             $lesson->add_message(get_string('eolstudentoutoftime', 'lesson'));
  61             redirect(new moodle_url('/mod/lesson/view.php', array('id'=>$cm->id,'pageid'=>LESSON_EOL, 'outoftime'=>'normal')));
  62         } else if ($timeleft < 60) {
  63             // One minute warning
  64             $lesson->add_message(get_string("studentoneminwarning", "lesson"));
  65         }
  66     }
  67 } else {
  68     $timer = new stdClass;
  69 }
  70
  71 // record answer (if necessary) and show response (if none say if answer is correct or not)
  72 $page = $lesson->load_page(required_param('pageid', PARAM_INT));
  73
  74 $userhasgrade = $DB->count_records("lesson_grades", array("lessonid"=>$lesson->id, "userid"=>$USER->id));
  75 $reviewmode = false;
  76 if ($userhasgrade && !$lesson->retake) {
  77     $reviewmode = true;
  78 }
  79
  80 // Check the page has answers [MDL-25632]
  81 if (count($page->answers) > 0) {
  82     $result = $page->record_attempt($context);
  83 } else {
  84     // The page has no answers so we will just progress to the next page in the
  85     // sequence (as set by newpageid).
  86     $result = new stdClass;
  87     $result->newpageid       = optional_param('newpageid', $page->nextpageid, PARAM_INT);
  88     $result->nodefaultresponse  = true;
  89 }
  90
  91 if (isset($USER->modattempts[$lesson->id])) {
  92     // make sure if the student is reviewing, that he/she sees the same pages/page path that he/she saw the first time
  93     if ($USER->modattempts[$lesson->id]->pageid == $page->id && $page->nextpageid == 0) {  // remember, this session variable holds the pageid of the last page that the user saw
  94         $result->newpageid = LESSON_EOL;
  95     } else {
  96         $nretakes = $DB->count_records("lesson_grades", array("lessonid"=>$lesson->id, "userid"=>$USER->id));
  97         $nretakes--; // make sure we are looking at the right try.
  98         $attempts = $DB->get_records("lesson_attempts", array("lessonid"=>$lesson->id, "userid"=>$USER->id, "retry"=>$nretakes), "timeseen", "id, pageid");
  99         $found = false;
 100         $temppageid = 0;
 101         // Make sure that the newpageid always defaults to something valid.
 102         $result->newpageid = LESSON_EOL;
 103         foreach($attempts as $attempt) {
 104             if ($found && $temppageid != $attempt->pageid) { // now try to find the next page, make sure next few attempts do no belong to current page
 105                 $result->newpageid = $attempt->pageid;
 106                 break;
 107             }
 108             if ($attempt->pageid == $page->id) {
 109                 $found = true; // if found current page
 110                 $temppageid = $attempt->pageid;
 111             }
 112         }
 113     }
 114 } elseif ($result->newpageid != LESSON_CLUSTERJUMP && $page->id != 0 && $result->newpageid > 0) {
 115     // going to check to see if the page that the user is going to view next, is a cluster page.
 116     // If so, dont display, go into the cluster.  The $result->newpageid > 0 is used to filter out all of the negative code jumps.
 117     $newpage = $lesson->load_page($result->newpageid);
 118     if ($newpageid = $newpage->override_next_page($result->newpageid)) {
 119         $result->newpageid = $newpageid;
 120     }
 121 } elseif ($result->newpageid == LESSON_UNSEENBRANCHPAGE) {
 122     if ($canmanage) {
 123         if ($page->nextpageid == 0) {
 124             $result->newpageid = LESSON_EOL;
 125         } else {
 126             $result->newpageid = $page->nextpageid;
 127         }
 128     } else {
 129         $result->newpageid = lesson_unseen_question_jump($lesson, $USER->id, $page->id);
 130     }
 131 } elseif ($result->newpageid == LESSON_PREVIOUSPAGE) {
 132     $result->newpageid = $page->prevpageid;
 133 } elseif ($result->newpageid == LESSON_RANDOMPAGE) {
 134     $result->newpageid = lesson_random_question_jump($lesson, $page->id);
 135 } elseif ($result->newpageid == LESSON_CLUSTERJUMP) {
 136     if ($canmanage) {
 137         if ($page->nextpageid == 0) {  // if teacher, go to next page
 138             $result->newpageid = LESSON_EOL;
 139         } else {
 140             $result->newpageid = $page->nextpageid;
 141         }
 142     } else {
 143         $result->newpageid = $lesson->cluster_jump($page->id);
 144     }
 145 }
 146
 147 if ($result->nodefaultresponse) {
 148     // Don't display feedback
 149     redirect(new moodle_url('/mod/lesson/view.php', array('id'=>$cm->id,'pageid'=>$result->newpageid)));
 150 }
 151
 152 /// Set Messages
 153
 154 if ($canmanage) {
 155     // This is the warning msg for teachers to inform them that cluster and unseen does not work while logged in as a teacher
 156     if(lesson_display_teacher_warning($lesson)) {
 157         $warningvars = new stdClass();
 158         $warningvars->cluster = get_string("clusterjump", "lesson");
 159         $warningvars->unseen = get_string("unseenpageinbranch", "lesson");
 160         $lesson->add_message(get_string("teacherjumpwarning", "lesson", $warningvars));
 161     }
 162     // Inform teacher that s/he will not see the timer
 163     if ($lesson->timelimit) {
 164         $lesson->add_message(get_string("teachertimerwarning", "lesson"));
 165     }
 166 }
 167 // Report attempts remaining
 168 if ($result->attemptsremaining != 0 && $lesson->review && !$reviewmode) {
 169     $lesson->add_message(get_string('attemptsremaining', 'lesson', $result->attemptsremaining));
 170 }
 171
 172 $PAGE->set_url('/mod/lesson/view.php', array('id' => $cm->id, 'pageid' => $page->id));
 173 $PAGE->set_subpage($page->id);
 174
 175 /// Print the header, heading and tabs
 176 lesson_add_fake_blocks($PAGE, $cm, $lesson, $timer);
 177 echo $lessonoutput->header($lesson, $cm, 'view', true, $page->id, get_string('continue', 'lesson'));
 178
 179 if ($lesson->displayleft) {
 180     echo '<a name="maincontent" id="maincontent" title="'.get_string('anchortitle', 'lesson').'"></a>';
 181 }
 182 // This calculates and prints the ongoing score message
 183 if ($lesson->ongoing && !$reviewmode) {
 184     echo $lessonoutput->ongoing_score($lesson);
 185 }
 186 if (!$reviewmode) {
 187     echo $result->feedback;
 188 }
 189
 190 // User is modifying attempts - save button and some instructions
 191 if (isset($USER->modattempts[$lesson->id])) {
 192     $url = $CFG->wwwroot.'/mod/lesson/view.php';
 193     $content = $OUTPUT->box(get_string("gotoendoflesson", "lesson"), 'center');
 194     $content .= $OUTPUT->box(get_string("or", "lesson"), 'center');
 195     $content .= $OUTPUT->box(get_string("continuetonextpage", "lesson"), 'center');
 196     $content .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'id', 'value'=>$cm->id));
 197     $content .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'pageid', 'value'=>LESSON_EOL));
 198     $content .= html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'submit', 'value'=>get_string('finish', 'lesson')));
 199     echo html_writer::tag('form', "<div>$content</div>", array('method'=>'post', 'action'=>$url));
 200 }
 201
 202 // Review button back
 203 if (!$result->correctanswer && !$result->noanswer && !$result->isessayquestion && !$reviewmode && $lesson->review && !$result->maxattemptsreached) {
 204     $url = $CFG->wwwroot.'/mod/lesson/view.php';
 205     $content = html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'id', 'value'=>$cm->id));
 206     $content .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'pageid', 'value'=>$page->id));
 207     $content .= html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'submit', 'value'=>get_string('reviewquestionback', 'lesson')));
 208     echo html_writer::tag('form', "<div class=\"singlebutton\">$content</div>", array('method'=>'post', 'action'=>$url));
 209 }
 210
 211 $url = new moodle_url('/mod/lesson/view.php', array('id'=>$cm->id, 'pageid'=>$result->newpageid));
 212 if ($lesson->review && !$result->correctanswer && !$result->noanswer && !$result->isessayquestion && !$result->maxattemptsreached) {
 213     // Review button continue
 214     echo $OUTPUT->single_button($url, get_string('reviewquestioncontinue', 'lesson'));
 215 } else {
 216     // Normal continue button
 217     echo $OUTPUT->single_button($url, get_string('continue', 'lesson'));
 218 }
 219
 220 echo $lessonoutput->footer();