mod/lesson/pagetypes/matching.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  * Matching
  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 defined('MOODLE_INTERNAL') || die();
  27
  28 /** Matching question type */
  29 define("LESSON_PAGE_MATCHING",      "5");
  30
  31 class lesson_page_type_matching extends lesson_page {
  32
  33     protected $type = lesson_page::TYPE_QUESTION;
  34     protected $typeid = LESSON_PAGE_MATCHING;
  35     protected $typeidstring = 'matching';
  36     protected $string = null;
  37
  38     public function get_typeid() {
  39         return $this->typeid;
  40     }
  41     public function get_typestring() {
  42         if ($this->string===null) {
  43             $this->string = get_string($this->typeidstring, 'lesson');
  44         }
  45         return $this->string;
  46     }
  47     public function get_idstring() {
  48         return $this->typeidstring;
  49     }
  50     public function display($renderer, $attempt) {
  51         global $USER, $CFG, $PAGE;
  52         $mform = $this->make_answer_form($attempt);
  53         $data = new stdClass;
  54         $data->id = $PAGE->cm->id;
  55         $data->pageid = $this->properties->id;
  56         $mform->set_data($data);
  57
  58         // Trigger an event question viewed.
  59         $eventparams = array(
  60             'context' => context_module::instance($PAGE->cm->id),
  61             'objectid' => $this->properties->id,
  62             'other' => array(
  63                     'pagetype' => $this->get_typestring()
  64                 )
  65             );
  66
  67         $event = \mod_lesson\event\question_viewed::create($eventparams);
  68         $event->trigger();
  69         return $mform->display();
  70     }
  71
  72     protected function make_answer_form($attempt=null) {
  73         global $USER, $CFG;
  74         // don't shuffle answers (could be an option??)
  75         $getanswers = array_slice($this->get_answers(), 2);
  76
  77         $answers = array();
  78         foreach ($getanswers as $getanswer) {
  79             $answers[$getanswer->id] = $getanswer;
  80         }
  81
  82         $responses = array();
  83         foreach ($answers as $answer) {
  84             // get all the response
  85             if ($answer->response != null) {
  86                 $responses[] = trim($answer->response);
  87             }
  88         }
  89
  90         $responseoptions = array(''=>get_string('choosedots'));
  91         if (!empty($responses)) {
  92             shuffle($responses);
  93             foreach ($responses as  $response) {
  94                 $responseoptions[htmlspecialchars($response)] = $response;
  95             }
  96         }
  97         if (isset($USER->modattempts[$this->lesson->id]) && !empty($attempt->useranswer)) {
  98             $useranswers = explode(',', $attempt->useranswer);
  99             $t = 0;
 100         } else {
 101             $useranswers = array();
 102         }
 103
 104         $action = $CFG->wwwroot.'/mod/lesson/continue.php';
 105         $params = array('answers'=>$answers, 'useranswers'=>$useranswers, 'responseoptions'=>$responseoptions, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents());
 106         $mform = new lesson_display_answer_form_matching($action, $params);
 107         return $mform;
 108     }
 109
 110     public function create_answers($properties) {
 111         global $DB, $PAGE;
 112         // now add the answers
 113         $newanswer = new stdClass;
 114         $newanswer->lessonid = $this->lesson->id;
 115         $newanswer->pageid = $this->properties->id;
 116         $newanswer->timecreated = $this->properties->timecreated;
 117
 118         $cm = get_coursemodule_from_instance('lesson', $this->lesson->id, $this->lesson->course);
 119         $context = context_module::instance($cm->id);
 120
 121         // Check for duplicate response format.
 122         $duplicateresponse = array();
 123         if (is_array($properties->response_editor) &&             // If there are response_editors to iterate.
 124                 is_array(reset($properties->response_editor))) {  // And they come split into text & format array.
 125             foreach ($properties->response_editor as $response) { // Iterate over all them.
 126                 $duplicateresponse[] = $response['text'];         // Picking the text only. This pagetype is that way.
 127             }
 128             $properties->response_editor = $duplicateresponse;
 129         }
 130
 131         $answers = array();
 132
 133         // need to add two to offset correct response and wrong response
 134         $this->lesson->maxanswers = $this->lesson->maxanswers + 2;
 135         for ($i = 0; $i < $this->lesson->maxanswers; $i++) {
 136             $answer = clone($newanswer);
 137             if (!empty($properties->answer_editor[$i]) && is_array($properties->answer_editor[$i])) {
 138                 $answer->answer = $properties->answer_editor[$i]['text'];
 139                 $answer->answerformat = $properties->answer_editor[$i]['format'];
 140             }
 141             if (!empty($properties->response_editor[$i])) {
 142                 $answer->response = $properties->response_editor[$i];
 143                 $answer->responseformat = 0;
 144             }
 145
 146             if (isset($properties->jumpto[$i])) {
 147                 $answer->jumpto = $properties->jumpto[$i];
 148             }
 149             if ($this->lesson->custom && isset($properties->score[$i])) {
 150                 $answer->score = $properties->score[$i];
 151             }
 152
 153             if (isset($answer->answer) && $answer->answer != '') {
 154                 $answer->id = $DB->insert_record("lesson_answers", $answer);
 155                 $this->save_answers_files($context, $PAGE->course->maxbytes,
 156                         $answer, $properties->answer_editor[$i]);
 157                 $answers[$answer->id] = new lesson_page_answer($answer);
 158             } else if ($i < 2) {
 159                 $answer->id = $DB->insert_record("lesson_answers", $answer);
 160                 $answers[$answer->id] = new lesson_page_answer($answer);
 161             } else {
 162                 break;
 163             }
 164         }
 165         $this->answers = $answers;
 166         return $answers;
 167     }
 168
 169     public function check_answer() {
 170         global $CFG, $PAGE;
 171
 172         $formattextdefoptions = new stdClass();
 173         $formattextdefoptions->noclean = true;
 174         $formattextdefoptions->para = false;
 175
 176         $result = parent::check_answer();
 177
 178         $mform = $this->make_answer_form();
 179
 180         $data = $mform->get_data();
 181         require_sesskey();
 182
 183         if (!$data) {
 184             $result->inmediatejump = true;
 185             $result->newpageid = $this->properties->id;
 186             return $result;
 187         }
 188
 189         $response = $data->response;
 190         $getanswers = $this->get_answers();
 191         foreach ($getanswers as $key => $answer) {
 192             $getanswers[$key] = parent::rewrite_answers_urls($answer);
 193         }
 194
 195         $correct = array_shift($getanswers);
 196         $wrong   = array_shift($getanswers);
 197
 198         $answers = array();
 199         foreach ($getanswers as $key => $answer) {
 200             if ($answer->answer !== '' or $answer->response !== '') {
 201                 $answers[$answer->id] = $answer;
 202             }
 203         }
 204
 205         // get the user's exact responses for record keeping
 206         $hits = 0;
 207         $userresponse = array();
 208         $result->studentanswerformat = FORMAT_HTML;
 209         foreach ($response as $id => $value) {
 210             if ($value == '') {
 211                 $result->noanswer = true;
 212                 return $result;
 213             }
 214             $value = htmlspecialchars_decode($value);
 215             $userresponse[] = $value;
 216             // Make sure the user's answer exists in question's answer
 217             if (array_key_exists($id, $answers)) {
 218                 $answer = $answers[$id];
 219                 $result->studentanswer .= '<br />'.format_text($answer->answer, $answer->answerformat, $formattextdefoptions).' = '.$value;
 220                 if (trim($answer->response) == trim($value)) {
 221                     $hits++;
 222                 }
 223             }
 224         }
 225
 226         $result->userresponse = implode(",", $userresponse);
 227
 228         if ($hits == count($answers)) {
 229             $result->correctanswer = true;
 230             $result->response      = format_text($correct->answer, $correct->answerformat, $formattextdefoptions);
 231             $result->answerid      = $correct->id;
 232             $result->newpageid     = $correct->jumpto;
 233         } else {
 234             $result->correctanswer = false;
 235             $result->response      = format_text($wrong->answer, $wrong->answerformat, $formattextdefoptions);
 236             $result->answerid      = $wrong->id;
 237             $result->newpageid     = $wrong->jumpto;
 238         }
 239
 240         return $result;
 241     }
 242
 243     public function option_description_string() {
 244         return get_string("firstanswershould", "lesson");
 245     }
 246
 247     public function display_answers(html_table $table) {
 248         $answers = $this->get_answers();
 249         $options = new stdClass;
 250         $options->noclean = true;
 251         $options->para = false;
 252         $i = 1;
 253         $n = 0;
 254
 255         foreach ($answers as $answer) {
 256             $answer = parent::rewrite_answers_urls($answer);
 257             if ($n < 2) {
 258                 if ($answer->answer != null) {
 259                     $cells = array();
 260                     if ($n == 0) {
 261                         $cells[] = '<label>' . get_string('correctresponse', 'lesson') . '</label>';
 262                     } else {
 263                         $cells[] = '<label>' . get_string('wrongresponse', 'lesson') . '</label>';
 264                     }
 265                     $cells[] = format_text($answer->answer, $answer->answerformat, $options);
 266                     $table->data[] = new html_table_row($cells);
 267                 }
 268
 269                 if ($n == 0) {
 270                     $cells = array();
 271                     $cells[] = '<label>' . get_string('correctanswerscore', 'lesson') . '</label>: ';
 272                     $cells[] = $answer->score;
 273                     $table->data[] = new html_table_row($cells);
 274
 275                     $cells = array();
 276                     $cells[] = '<label>' . get_string('correctanswerjump', 'lesson') . '</label>: ';
 277                     $cells[] = $this->get_jump_name($answer->jumpto);
 278                     $table->data[] = new html_table_row($cells);
 279                 } elseif ($n == 1) {
 280                     $cells = array();
 281                     $cells[] = '<label>' . get_string('wronganswerscore', 'lesson') . '</label>: ';
 282                     $cells[] = $answer->score;
 283                     $table->data[] = new html_table_row($cells);
 284
 285                     $cells = array();
 286                     $cells[] = '<label>' . get_string('wronganswerjump', 'lesson') . '</label>: ';
 287                     $cells[] = $this->get_jump_name($answer->jumpto);
 288                     $table->data[] = new html_table_row($cells);
 289                 }
 290
 291                 if ($n === 0){
 292                     $table->data[count($table->data)-1]->cells[0]->style = 'width:20%;';
 293                 }
 294                 $n++;
 295                 $i--;
 296             } else {
 297                 $cells = array();
 298                 if ($this->lesson->custom && $answer->score > 0) {
 299                     // if the score is > 0, then it is correct
 300                     $cells[] = '<label class="correct">' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 301                 } else if ($this->lesson->custom) {
 302                     $cells[] = '<label>' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 303                 } else if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
 304                     $cells[] = '<label class="correct">' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 305                 } else {
 306                     $cells[] = '<label>' . get_string('answer', 'lesson') . " {$i}</label>: \n";
 307                 }
 308                 $cells[] = format_text($answer->answer, $answer->answerformat, $options);
 309                 $table->data[] = new html_table_row($cells);
 310
 311                 $cells = array();
 312                 $cells[] = '<label>' . get_string('matchesanswer', 'lesson') . " {$i}</label>: \n";
 313                 $cells[] = format_text($answer->response, $answer->responseformat, $options);
 314                 $table->data[] = new html_table_row($cells);
 315             }
 316             $i++;
 317         }
 318         return $table;
 319     }
 320     /**
 321      * Updates the page and its answers
 322      *
 323      * @global moodle_database $DB
 324      * @global moodle_page $PAGE
 325      * @param stdClass $properties
 326      * @return bool
 327      */
 328     public function update($properties, $context = null, $maxbytes = null) {
 329         global $DB, $PAGE;
 330         $answers  = $this->get_answers();
 331         $properties->id = $this->properties->id;
 332         $properties->lessonid = $this->lesson->id;
 333         $properties->timemodified = time();
 334         $properties = file_postupdate_standard_editor($properties, 'contents', array('noclean'=>true, 'maxfiles'=>EDITOR_UNLIMITED_FILES, 'maxbytes'=>$PAGE->course->maxbytes), context_module::instance($PAGE->cm->id), 'mod_lesson', 'page_contents', $properties->id);
 335         $DB->update_record("lesson_pages", $properties);
 336
 337         // Trigger an event: page updated.
 338         \mod_lesson\event\page_updated::create_from_lesson_page($this, $context)->trigger();
 339
 340         // need to add two to offset correct response and wrong response
 341         $this->lesson->maxanswers += 2;
 342         for ($i = 0; $i < $this->lesson->maxanswers; $i++) {
 343             if (!array_key_exists($i, $this->answers)) {
 344                 $this->answers[$i] = new stdClass;
 345                 $this->answers[$i]->lessonid = $this->lesson->id;
 346                 $this->answers[$i]->pageid = $this->id;
 347                 $this->answers[$i]->timecreated = $this->timecreated;
 348             }
 349
 350             if (!empty($properties->answer_editor[$i]) && is_array($properties->answer_editor[$i])) {
 351                 $this->answers[$i]->answer = $properties->answer_editor[$i]['text'];
 352                 $this->answers[$i]->answerformat = $properties->answer_editor[$i]['format'];
 353             }
 354             if (!empty($properties->response_editor[$i])) {
 355                 $this->answers[$i]->response = $properties->response_editor[$i];
 356                 $this->answers[$i]->responseformat = 0;
 357             }
 358
 359             if (isset($properties->jumpto[$i])) {
 360                 $this->answers[$i]->jumpto = $properties->jumpto[$i];
 361             }
 362             if ($this->lesson->custom && isset($properties->score[$i])) {
 363                 $this->answers[$i]->score = $properties->score[$i];
 364             }
 365
 366             // we don't need to check for isset here because properties called it's own isset method.
 367             if ($this->answers[$i]->answer != '') {
 368                 if (!isset($this->answers[$i]->id)) {
 369                     $this->answers[$i]->id =  $DB->insert_record("lesson_answers", $this->answers[$i]);
 370                 } else {
 371                     $DB->update_record("lesson_answers", $this->answers[$i]->properties());
 372                 }
 373                 // Save files in answers (no response_editor for matching questions).
 374                 $this->save_answers_files($context, $maxbytes, $this->answers[$i], $properties->answer_editor[$i]);
 375             } else if ($i < 2) {
 376                 if (!isset($this->answers[$i]->id)) {
 377                     $this->answers[$i]->id =  $DB->insert_record("lesson_answers", $this->answers[$i]);
 378                 } else {
 379                     $DB->update_record("lesson_answers", $this->answers[$i]->properties());
 380                 }
 381
 382                 // Save files in answers (no response_editor for matching questions).
 383                 $this->save_answers_files($context, $maxbytes, $this->answers[$i], $properties->answer_editor[$i]);
 384             } else if (isset($this->answers[$i]->id)) {
 385                 $DB->delete_records('lesson_answers', array('id'=>$this->answers[$i]->id));
 386                 unset($this->answers[$i]);
 387             }
 388         }
 389         return true;
 390     }
 391     public function stats(array &$pagestats, $tries) {
 392         if(count($tries) > $this->lesson->maxattempts) { // if there are more tries than the max that is allowed, grab the last "legal" attempt
 393             $temp = $tries[$this->lesson->maxattempts - 1];
 394         } else {
 395             // else, user attempted the question less than the max, so grab the last one
 396             $temp = end($tries);
 397         }
 398         if ($temp->correct) {
 399             if (isset($pagestats[$temp->pageid]["correct"])) {
 400                 $pagestats[$temp->pageid]["correct"]++;
 401             } else {
 402                 $pagestats[$temp->pageid]["correct"] = 1;
 403             }
 404         }
 405         if (isset($pagestats[$temp->pageid]["total"])) {
 406             $pagestats[$temp->pageid]["total"]++;
 407         } else {
 408             $pagestats[$temp->pageid]["total"] = 1;
 409         }
 410         return true;
 411     }
 412     public function report_answers($answerpage, $answerdata, $useranswer, $pagestats, &$i, &$n) {
 413         $answers = array();
 414         foreach ($this->get_answers() as $answer) {
 415             $answers[$answer->id] = $answer;
 416         }
 417         $formattextdefoptions = new stdClass;
 418         $formattextdefoptions->para = false;  //I'll use it widely in this page
 419         foreach ($answers as $answer) {
 420             if ($n == 0 && $useranswer != null && $useranswer->correct) {
 421                 if ($answer->response == null && $useranswer != null) {
 422                     $answerdata->response = get_string("thatsthecorrectanswer", "lesson");
 423                 } else {
 424                     $answerdata->response = $answer->response;
 425                 }
 426                 if ($this->lesson->custom) {
 427                     $answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
 428                 } else {
 429                     $answerdata->score = get_string("receivedcredit", "lesson");
 430                 }
 431             } elseif ($n == 1 && $useranswer != null && !$useranswer->correct) {
 432                 if ($answer->response == null && $useranswer != null) {
 433                     $answerdata->response = get_string("thatsthewronganswer", "lesson");
 434                 } else {
 435                     $answerdata->response = $answer->response;
 436                 }
 437                 if ($this->lesson->custom) {
 438                     $answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
 439                 } else {
 440                     $answerdata->score = get_string("didnotreceivecredit", "lesson");
 441                 }
 442             } elseif ($n > 1) {
 443                 $data = '<label class="accesshide" for="answer_' . $n . '">' . get_string('answer', 'lesson') . '</label>';
 444                 $data .= strip_tags(format_string($answer->answer)) . ' ';
 445                 if ($useranswer != null) {
 446                     $userresponse = explode(",", $useranswer->useranswer);
 447                     $data .= '<label class="accesshide" for="stu_answer_response_' . $n . '">' . get_string('matchesanswer', 'lesson') . '</label>';
 448                     $data .= "<select class=\"custom-select\" id=\"stu_answer_response_" . $n . "\" " .
 449                              "disabled=\"disabled\"><option selected=\"selected\">";
 450                     if (array_key_exists($i, $userresponse)) {
 451                         $data .= $userresponse[$i];
 452                     }
 453                     $data .= "</option></select>";
 454                 } else {
 455                     $data .= '<label class="accesshide" for="answer_response_' . $n . '">' . get_string('matchesanswer', 'lesson') . '</label>';
 456                     $data .= "<select class=\"custom-select\" id=\"answer_response_" . $n . "\" " .
 457                              "disabled=\"disabled\"><option selected=\"selected\">".strip_tags(format_string($answer->response))."</option></select>";
 458                 }
 459
 460                 if ($n == 2) {
 461                     if (isset($pagestats[$this->properties->id])) {
 462                         if (!array_key_exists('correct', $pagestats[$this->properties->id])) {
 463                             $pagestats[$this->properties->id]["correct"] = 0;
 464                         }
 465                         $percent = $pagestats[$this->properties->id]["correct"] / $pagestats[$this->properties->id]["total"] * 100;
 466                         $percent = round($percent, 2);
 467                         $percent .= "% ".get_string("answeredcorrectly", "lesson");
 468                     } else {
 469                         $percent = get_string("nooneansweredthisquestion", "lesson");
 470                     }
 471                 } else {
 472                     $percent = '';
 473                 }
 474
 475                 $answerdata->answers[] = array($data, $percent);
 476                 $i++;
 477             }
 478             $n++;
 479             $answerpage->answerdata = $answerdata;
 480         }
 481         return $answerpage;
 482     }
 483     public function get_jumps() {
 484         global $DB;
 485         // The jumps for matching question type are stored in the 1st and 2nd answer record.
 486         $jumps = array();
 487         if ($answers = $DB->get_records("lesson_answers", array("lessonid" => $this->lesson->id, "pageid" => $this->properties->id), 'id', '*', 0, 2)) {
 488             foreach ($answers as $answer) {
 489                 $jumps[] = $this->get_jump_name($answer->jumpto);
 490             }
 491         } else {
 492             $jumps[] = $this->get_jump_name($this->properties->nextpageid);
 493         }
 494         return $jumps;
 495     }
 496 }
 497
 498 class lesson_add_page_form_matching extends lesson_add_page_form_base {
 499
 500     public $qtype = 'matching';
 501     public $qtypestring = 'matching';
 502     protected $answerformat = LESSON_ANSWER_HTML;
 503     protected $responseformat = '';
 504
 505     public function custom_definition() {
 506
 507         $this->_form->addElement('header', 'correctresponse', get_string('correctresponse', 'lesson'));
 508         $this->_form->addElement('editor', 'answer_editor[0]', get_string('correctresponse', 'lesson'),
 509                 array('rows' => '4', 'columns' => '80'),
 510                 array('noclean' => true, 'maxfiles' => EDITOR_UNLIMITED_FILES, 'maxbytes' => $this->_customdata['maxbytes']));
 511         $this->_form->setType('answer_editor[0]', PARAM_RAW);
 512         $this->_form->setDefault('answer_editor[0]', array('text' => '', 'format' => FORMAT_HTML));
 513         $this->add_jumpto(0, get_string('correctanswerjump','lesson'), LESSON_NEXTPAGE);
 514         $this->add_score(0, get_string("correctanswerscore", "lesson"), 1);
 515
 516         $this->_form->addElement('header', 'wrongresponse', get_string('wrongresponse', 'lesson'));
 517         $this->_form->addElement('editor', 'answer_editor[1]', get_string('wrongresponse', 'lesson'),
 518                 array('rows' => '4', 'columns' => '80'),
 519                 array('noclean' => true, 'maxfiles' => EDITOR_UNLIMITED_FILES, 'maxbytes' => $this->_customdata['maxbytes']));
 520         $this->_form->setType('answer_editor[1]', PARAM_RAW);
 521         $this->_form->setDefault('answer_editor[1]', array('text' => '', 'format' => FORMAT_HTML));
 522
 523         $this->add_jumpto(1, get_string('wronganswerjump','lesson'), LESSON_THISPAGE);
 524         $this->add_score(1, get_string("wronganswerscore", "lesson"), 0);
 525
 526         for ($i = 2; $i < $this->_customdata['lesson']->maxanswers+2; $i++) {
 527             $this->_form->addElement('header', 'matchingpair'.($i-1), get_string('matchingpair', 'lesson', $i-1));
 528             $this->add_answer($i, null, ($i < 4), LESSON_ANSWER_HTML);
 529             $required = ($i < 4);
 530             $label = get_string('matchesanswer','lesson');
 531             $count = $i;
 532             $this->_form->addElement('text', 'response_editor['.$count.']', $label, array('size'=>'50'));
 533             $this->_form->setType('response_editor['.$count.']', PARAM_NOTAGS);
 534             $this->_form->setDefault('response_editor['.$count.']', '');
 535             if ($required) {
 536                 $this->_form->addRule('response_editor['.$count.']', get_string('required'), 'required', null, 'client');
 537             }
 538         }
 539     }
 540 }
 541
 542 class lesson_display_answer_form_matching extends moodleform {
 543
 544     public function definition() {
 545         global $USER, $OUTPUT, $PAGE;
 546         $mform = $this->_form;
 547         $answers = $this->_customdata['answers'];
 548         $useranswers = $this->_customdata['useranswers'];
 549         $responseoptions = $this->_customdata['responseoptions'];
 550         $lessonid = $this->_customdata['lessonid'];
 551         $contents = $this->_customdata['contents'];
 552
 553         // Disable shortforms.
 554         $mform->setDisableShortforms();
 555
 556         $mform->addElement('header', 'pageheader');
 557
 558         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
 559
 560         $hasattempt = false;
 561         $disabled = '';
 562         if (isset($useranswers) && !empty($useranswers)) {
 563             $hasattempt = true;
 564             $disabled = array('disabled' => 'disabled');
 565         }
 566
 567         $options = new stdClass;
 568         $options->para = false;
 569         $options->noclean = true;
 570
 571         $mform->addElement('hidden', 'id');
 572         $mform->setType('id', PARAM_INT);
 573
 574         $mform->addElement('hidden', 'pageid');
 575         $mform->setType('pageid', PARAM_INT);
 576
 577         $i = 0;
 578
 579         foreach ($answers as $answer) {
 580             $mform->addElement('html', '<div class="answeroption">');
 581             if ($answer->response != null) {
 582                 $responseid = 'response['.$answer->id.']';
 583                 if ($hasattempt) {
 584                     $responseid = 'response_'.$answer->id;
 585                     $mform->addElement('hidden', 'response['.$answer->id.']', htmlspecialchars($useranswers[$i]));
 586                     // Temporary fixed until MDL-38885 gets integrated
 587                     $mform->setType('response', PARAM_TEXT);
 588                 }
 589                 $answer = lesson_page_type_matching::rewrite_answers_urls($answer);
 590                 $mform->addElement('select', $responseid, format_text($answer->answer,$answer->answerformat,$options), $responseoptions, $disabled);
 591                 $mform->setType($responseid, PARAM_TEXT);
 592                 if ($hasattempt) {
 593                     $mform->setDefault($responseid, htmlspecialchars(trim($useranswers[$i])));
 594                 } else {
 595                     $mform->setDefault($responseid, 'answeroption');
 596                 }
 597             }
 598             $mform->addElement('html', '</div>');
 599             $i++;
 600         }
 601         if ($hasattempt) {
 602             $this->add_action_buttons(null, get_string("nextpage", "lesson"));
 603         } else {
 604             $this->add_action_buttons(null, get_string("submit", "lesson"));
 605         }
 606     }
 607
 608 }