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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Essay
*
* @package mod
* @subpackage lesson
* @copyright 2009 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
**/
defined('MOODLE_INTERNAL') || die();
/** Essay question type */
define("LESSON_PAGE_ESSAY", "10");
class lesson_page_type_essay extends lesson_page {
protected $type = lesson_page::TYPE_QUESTION;
protected $typeidstring = 'essay';
protected $typeid = LESSON_PAGE_ESSAY;
protected $string = null;
public function get_typeid() {
return $this->typeid;
}
public function get_typestring() {
if ($this->string===null) {
$this->string = get_string($this->typeidstring, 'lesson');
}
return $this->string;
}
public function get_idstring() {
return $this->typeidstring;
}
public function display($renderer, $attempt) {
global $PAGE, $CFG, $USER;
$mform = new lesson_display_answer_form_essay($CFG->wwwroot.'/mod/lesson/continue.php', array('contents'=>$this->get_contents(), 'lessonid'=>$this->lesson->id));
$data = new stdClass;
$data->id = $PAGE->cm->id;
$data->pageid = $this->properties->id;
if (isset($USER->modattempts[$this->lesson->id])) {
$essayinfo = unserialize($attempt->useranswer);
$data->answer = $essayinfo->answer;
}
$mform->set_data($data);
return $mform->display();
}
public function create_answers($properties) {
global $DB;
// now add the answers
$newanswer = new stdClass;
$newanswer->lessonid = $this->lesson->id;
$newanswer->pageid = $this->properties->id;
$newanswer->timecreated = $this->properties->timecreated;
if (isset($properties->jumpto[0])) {
$newanswer->jumpto = $properties->jumpto[0];
}
if (isset($properties->score[0])) {
$newanswer->score = $properties->score[0];
}
$newanswer->id = $DB->insert_record("lesson_answers", $newanswer);
$answers = array($newanswer->id => new lesson_page_answer($newanswer));
$this->answers = $answers;
return $answers;
}
public function check_answer() {
global $PAGE, $CFG;
$result = parent::check_answer();
$result->isessayquestion = true;
$mform = new lesson_display_answer_form_essay($CFG->wwwroot.'/mod/lesson/continue.php', array('contents'=>$this->get_contents()));
$data = $mform->get_data();
require_sesskey();
if (!$data) {
redirect(new moodle_url('/mod/lesson/view.php', array('id'=>$PAGE->cm->id, 'pageid'=>$this->properties->id)));
}
if (is_array($data->answer)) {
$studentanswer = $data->answer['text'];
$studentanswerformat = $data->answer['format'];
} else {
$studentanswer = $data->answer;
$studentanswerformat = FORMAT_MOODLE;
}
if (trim($studentanswer) === '') {
$result->noanswer = true;
return $result;
}
$answers = $this->get_answers();
foreach ($answers as $answer) {
$result->answerid = $answer->id;
$result->newpageid = $answer->jumpto;
}
$userresponse = new stdClass;
$userresponse->sent=0;
$userresponse->graded = 0;
$userresponse->score = 0;
$userresponse->answer = $studentanswer;
$userresponse->answerformat = $studentanswerformat;
$userresponse->response = "";
$result->userresponse = serialize($userresponse);
$result->studentanswerformat = $studentanswerformat;
$result->studentanswer = s($studentanswer);
return $result;
}
public function update($properties) {
global $DB, $PAGE;
$answers = $this->get_answers();
$properties->id = $this->properties->id;
$properties->lessonid = $this->lesson->id;
$properties = file_postupdate_standard_editor($properties, 'contents', array('noclean'=>true, 'maxfiles'=>EDITOR_UNLIMITED_FILES, 'maxbytes'=>$PAGE->course->maxbytes), get_context_instance(CONTEXT_MODULE, $PAGE->cm->id), 'mod_lesson', 'page_contents', $properties->id);
$DB->update_record("lesson_pages", $properties);
if (!array_key_exists(0, $this->answers)) {
$this->answers[0] = new stdClass;
$this->answers[0]->lessonid = $this->lesson->id;
$this->answers[0]->pageid = $this->id;
$this->answers[0]->timecreated = $this->timecreated;
}
if (isset($properties->jumpto[0])) {
$this->answers[0]->jumpto = $properties->jumpto[0];
}
if (isset($properties->score[0])) {
$this->answers[0]->score = $properties->score[0];
}
if (!isset($this->answers[0]->id)) {
$this->answers[0]->id = $DB->insert_record("lesson_answers", $this->answers[0]);
} else {
$DB->update_record("lesson_answers", $this->answers[0]->properties());
}
return true;
}
public function stats(array &$pagestats, $tries) {
if(count($tries) > $this->lesson->maxattempts) { // if there are more tries than the max that is allowed, grab the last "legal" attempt
$temp = $tries[$this->lesson->maxattempts - 1];
} else {
// else, user attempted the question less than the max, so grab the last one
$temp = end($tries);
}
$essayinfo = unserialize($temp->useranswer);
if ($essayinfo->graded) {
if (isset($pagestats[$temp->pageid])) {
$essaystats = $pagestats[$temp->pageid];
$essaystats->totalscore += $essayinfo->score;
$essaystats->total++;
$pagestats[$temp->pageid] = $essaystats;
} else {
$essaystats = new stdClass();
$essaystats->totalscore = $essayinfo->score;
$essaystats->total = 1;
$pagestats[$temp->pageid] = $essaystats;
}
}
return true;
}
public function report_answers($answerpage, $answerdata, $useranswer, $pagestats, &$i, &$n) {
$answers = $this->get_answers();
$formattextdefoptions = new stdClass;
$formattextdefoptions->para = false; //I'll use it widely in this page
$formattextdefoptions->context = $answerpage->context;
foreach ($answers as $answer) {
if ($useranswer != NULL) {
$essayinfo = unserialize($useranswer->useranswer);
if ($essayinfo->response == NULL) {
$answerdata->response = get_string("nocommentyet", "lesson");
} else {
$answerdata->response = s($essayinfo->response);
}
if (isset($pagestats[$this->properties->id])) {
$percent = $pagestats[$this->properties->id]->totalscore / $pagestats[$this->properties->id]->total * 100;
$percent = round($percent, 2);
$percent = get_string("averagescore", "lesson").": ". $percent ."%";
} else {
// dont think this should ever be reached....
$percent = get_string("nooneansweredthisquestion", "lesson");
}
if ($essayinfo->graded) {
if ($this->lesson->custom) {
$answerdata->score = get_string("pointsearned", "lesson").": ".$essayinfo->score;
} elseif ($essayinfo->score) {
$answerdata->score = get_string("receivedcredit", "lesson");
} else {
$answerdata->score = get_string("didnotreceivecredit", "lesson");
}
} else {
$answerdata->score = get_string("havenotgradedyet", "lesson");
}
} else {
$essayinfo = new stdClass();
$essayinfo->answer = get_string("didnotanswerquestion", "lesson");
}
if (isset($pagestats[$this->properties->id])) {
$avescore = $pagestats[$this->properties->id]->totalscore / $pagestats[$this->properties->id]->total;
$avescore = round($avescore, 2);
$avescore = get_string("averagescore", "lesson").": ". $avescore ;
} else {
// dont think this should ever be reached....
$avescore = get_string("nooneansweredthisquestion", "lesson");
}
$answerdata->answers[] = array(format_text($essayinfo->answer, $essayinfo->answerformat, $formattextdefoptions), $avescore);
$answerpage->answerdata = $answerdata;
}
return $answerpage;
}
public function is_unanswered($nretakes) {
global $DB, $USER;
if (!$DB->count_records("lesson_attempts", array('pageid'=>$this->properties->id, 'userid'=>$USER->id, 'retry'=>$nretakes))) {
return true;
}
return false;
}
public function requires_manual_grading() {
return true;
}
public function get_earnedscore($answers, $attempt) {
$essayinfo = unserialize($attempt->useranswer);
return $essayinfo->score;
}
}
class lesson_add_page_form_essay extends lesson_add_page_form_base {
public $qtype = 'essay';
public $qtypestring = 'essay';
public function custom_definition() {
$this->add_jumpto(0);
$this->add_score(0, null, 1);
}
}
class lesson_display_answer_form_essay extends moodleform {
public function definition() {
global $USER, $OUTPUT;
$mform = $this->_form;
$contents = $this->_customdata['contents'];
$hasattempt = false;
$attrs = '';
$useranswer = '';
$useranswerraw = '';
if (isset($this->_customdata['lessonid'])) {
$lessonid = $this->_customdata['lessonid'];
if (isset($USER->modattempts[$lessonid]->useranswer) && !empty($USER->modattempts[$lessonid]->useranswer)) {
$attrs = array('disabled' => 'disabled');
$hasattempt = true;
$useranswertemp = unserialize($USER->modattempts[$lessonid]->useranswer);
$useranswer = htmlspecialchars_decode($useranswertemp->answer, ENT_QUOTES);
$useranswerraw = $useranswertemp->answer;
}
}
$mform->addElement('header', 'pageheader');
$mform->addElement('html', $OUTPUT->container($contents, 'contents'));
$options = new stdClass;
$options->para = false;
$options->noclean = true;
$mform->addElement('hidden', 'id');
$mform->setType('id', PARAM_INT);
$mform->addElement('hidden', 'pageid');
$mform->setType('pageid', PARAM_INT);
if ($hasattempt) {
$mform->addElement('hidden', 'answer', $useranswerraw);
$mform->setType('answer', PARAM_RAW);
$mform->addElement('html', $OUTPUT->container(get_string('youranswer', 'lesson'), 'youranswer'));
$mform->addElement('html', $OUTPUT->container($useranswer, 'reviewessay'));
$this->add_action_buttons(null, get_string("nextpage", "lesson"));
} else {
$mform->addElement('editor', 'answer', get_string('youranswer', 'lesson'), null, null);
$mform->setType('answer', PARAM_RAW);
$this->add_action_buttons(null, get_string("submit", "lesson"));
}
}
}
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