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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 and 403] [Versions 402 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   * Core Report class of basic reporting plugin
  18   * @package   scormreport
  19   * @subpackage interactions
  20   * @author    Dan Marsden and Ankit Kumar Agarwal
  21   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   */
  23  
  24  namespace scormreport_interactions;
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->dirroot.'/mod/scorm/report/interactions/responsessettings_form.php');
  29  
  30  class report extends \mod_scorm\report {
  31      /**
  32       * displays the full report
  33       * @param \stdClass $scorm full SCORM object
  34       * @param \stdClass $cm - full course_module object
  35       * @param \stdClass $course - full course object
  36       * @param string $download - type of download being requested
  37       */
  38      public function display($scorm, $cm, $course, $download) {
  39          global $CFG, $DB, $OUTPUT, $PAGE;
  40  
  41          $contextmodule = \context_module::instance($cm->id);
  42          $action = optional_param('action', '', PARAM_ALPHA);
  43          $attemptids = optional_param_array('attemptid', array(), PARAM_RAW);
  44          $attemptsmode = optional_param('attemptsmode', SCORM_REPORT_ATTEMPTS_ALL_STUDENTS, PARAM_INT);
  45          $PAGE->set_url(new \moodle_url($PAGE->url, array('attemptsmode' => $attemptsmode)));
  46  
  47          // Scorm action bar for report.
  48          if ($download === '') {
  49              $actionbar = new \mod_scorm\output\actionbar($cm->id, true, $attemptsmode);
  50              $renderer = $PAGE->get_renderer('mod_scorm');
  51              echo $renderer->report_actionbar($actionbar);
  52          }
  53  
  54          if ($action == 'delete' && has_capability('mod/scorm:deleteresponses', $contextmodule) && confirm_sesskey()) {
  55              if (scorm_delete_responses($attemptids, $scorm)) { // Delete responses.
  56                  echo $OUTPUT->notification(get_string('scormresponsedeleted', 'scorm'), 'notifysuccess');
  57              }
  58          }
  59          // Find out current groups mode.
  60          $currentgroup = groups_get_activity_group($cm, true);
  61  
  62          // Detailed report.
  63          $mform = new \mod_scorm_report_interactions_settings($PAGE->url, compact('currentgroup'));
  64          if ($fromform = $mform->get_data()) {
  65              $pagesize = $fromform->pagesize;
  66              $includeqtext = $fromform->qtext;
  67              $includeresp = $fromform->resp;
  68              $includeright = $fromform->right;
  69              $includeresult = $fromform->result;
  70              set_user_preference('scorm_report_pagesize', $pagesize);
  71              set_user_preference('scorm_report_interactions_qtext', $includeqtext);
  72              set_user_preference('scorm_report_interactions_resp', $includeresp);
  73              set_user_preference('scorm_report_interactions_right', $includeright);
  74              set_user_preference('scorm_report_interactions_result', $includeresult);
  75          } else {
  76              $pagesize = get_user_preferences('scorm_report_pagesize', 0);
  77              $includeqtext = get_user_preferences('scorm_report_interactions_qtext', 0);
  78              $includeresp = get_user_preferences('scorm_report_interactions_resp', 1);
  79              $includeright = get_user_preferences('scorm_report_interactions_right', 0);
  80              $includeresult = get_user_preferences('scorm_report_interactions_result', 0);
  81          }
  82          if ($pagesize < 1) {
  83              $pagesize = SCORM_REPORT_DEFAULT_PAGE_SIZE;
  84          }
  85  
  86          // Select group menu.
  87          $displayoptions = array();
  88          $displayoptions['attemptsmode'] = $attemptsmode;
  89          $displayoptions['qtext'] = $includeqtext;
  90          $displayoptions['resp'] = $includeresp;
  91          $displayoptions['right'] = $includeright;
  92          $displayoptions['result'] = $includeresult;
  93  
  94          $mform->set_data($displayoptions + array('pagesize' => $pagesize));
  95          if ($groupmode = groups_get_activity_groupmode($cm)) {   // Groups are being used.
  96              if (!$download) {
  97                  groups_print_activity_menu($cm, new \moodle_url($PAGE->url, $displayoptions));
  98              }
  99          }
 100          $formattextoptions = array('context' => \context_course::instance($course->id));
 101  
 102          // We only want to show the checkbox to delete attempts
 103          // if the user has permissions and if the report mode is showing attempts.
 104          $candelete = has_capability('mod/scorm:deleteresponses', $contextmodule)
 105                  && ($attemptsmode != SCORM_REPORT_ATTEMPTS_STUDENTS_WITH_NO);
 106          // Select the students.
 107          $nostudents = false;
 108          list($allowedlistsql, $params) = get_enrolled_sql($contextmodule, 'mod/scorm:savetrack', (int) $currentgroup);
 109          if (empty($currentgroup)) {
 110              // All users who can attempt scoes.
 111              if (!$DB->record_exists_sql($allowedlistsql, $params)) {
 112                  echo $OUTPUT->notification(get_string('nostudentsyet'));
 113                  $nostudents = true;
 114              }
 115          } else {
 116              // All users who can attempt scoes and who are in the currently selected group.
 117              if (!$DB->record_exists_sql($allowedlistsql, $params)) {
 118                  echo $OUTPUT->notification(get_string('nostudentsingroup'));
 119                  $nostudents = true;
 120              }
 121          }
 122          if ( !$nostudents ) {
 123              // Now check if asked download of data.
 124              $coursecontext = \context_course::instance($course->id);
 125              if ($download) {
 126                  $filename = clean_filename("$course->shortname ".format_string($scorm->name, true, $formattextoptions));
 127              }
 128  
 129              // Define table columns.
 130              $columns = array();
 131              $headers = array();
 132              if (!$download && $candelete) {
 133                  $columns[] = 'checkbox';
 134                  $headers[] = $this->generate_master_checkbox();
 135              }
 136              if (!$download && $CFG->grade_report_showuserimage) {
 137                  $columns[] = 'picture';
 138                  $headers[] = '';
 139              }
 140              $columns[] = 'fullname';
 141              $headers[] = get_string('name');
 142  
 143              // TODO Does not support custom user profile fields (MDL-70456).
 144              $extrafields = \core_user\fields::get_identity_fields($coursecontext, false);
 145              foreach ($extrafields as $field) {
 146                  $columns[] = $field;
 147                  $headers[] = \core_user\fields::get_display_name($field);
 148              }
 149              $columns[] = 'attempt';
 150              $headers[] = get_string('attempt', 'scorm');
 151              $columns[] = 'start';
 152              $headers[] = get_string('started', 'scorm');
 153              $columns[] = 'finish';
 154              $headers[] = get_string('last', 'scorm');
 155              $columns[] = 'score';
 156              $headers[] = get_string('score', 'scorm');
 157              $scoes = $DB->get_records('scorm_scoes', array("scorm" => $scorm->id), 'sortorder, id');
 158              foreach ($scoes as $sco) {
 159                  if ($sco->launch != '') {
 160                      $columns[] = 'scograde'.$sco->id;
 161                      $headers[] = format_string($sco->title, '', $formattextoptions);
 162                  }
 163              }
 164  
 165              // Construct the SQL.
 166              $select = 'SELECT DISTINCT '.$DB->sql_concat('u.id', '\'#\'', 'COALESCE(sa.attempt, 0)').' AS uniqueid, ';
 167              // TODO Does not support custom user profile fields (MDL-70456).
 168              $userfields = \core_user\fields::for_identity($coursecontext, false)->with_userpic()->including('idnumber');
 169              $selectfields = $userfields->get_sql('u', false, '', 'userid')->selects;
 170              $select .= 'sa.scormid AS scormid, sa.attempt AS attempt ' . $selectfields . ' ';
 171  
 172              // This part is the same for all cases - join users and user tracking tables.
 173              $from = 'FROM {user} u ';
 174              $from .= 'LEFT JOIN {scorm_attempt} sa ON sa.userid = u.id AND sa.scormid = '.$scorm->id;
 175              switch ($attemptsmode) {
 176                  case SCORM_REPORT_ATTEMPTS_STUDENTS_WITH:
 177                      // Show only students with attempts.
 178                      $where = " WHERE u.id IN ({$allowedlistsql}) AND sa.userid IS NOT NULL";
 179                      break;
 180                  case SCORM_REPORT_ATTEMPTS_STUDENTS_WITH_NO:
 181                      // Show only students without attempts.
 182                      $where = " WHERE u.id IN ({$allowedlistsql}) AND sa.userid IS NULL";
 183                      break;
 184                  case SCORM_REPORT_ATTEMPTS_ALL_STUDENTS:
 185                      // Show all students with or without attempts.
 186                      $where = " WHERE u.id IN ({$allowedlistsql}) AND (sa.userid IS NOT NULL OR sa.userid IS NULL)";
 187                      break;
 188              }
 189  
 190              $countsql = 'SELECT COUNT(DISTINCT('.$DB->sql_concat('u.id', '\'#\'', 'COALESCE(sa.attempt, 0)').')) AS nbresults, ';
 191              $countsql .= 'COUNT(DISTINCT('.$DB->sql_concat('u.id', '\'#\'', 'sa.attempt').')) AS nbattempts, ';
 192              $countsql .= 'COUNT(DISTINCT(u.id)) AS nbusers ';
 193              $countsql .= $from.$where;
 194              $questioncount = get_scorm_question_count($scorm->id);
 195              $nbmaincolumns = count($columns);
 196              for ($id = 0; $id < $questioncount; $id++) {
 197                  if ($displayoptions['qtext']) {
 198                      $columns[] = 'question' . $id;
 199                      $headers[] = get_string('questionx', 'scormreport_interactions', $id);
 200                  }
 201                  if ($displayoptions['resp']) {
 202                      $columns[] = 'response' . $id;
 203                      $headers[] = get_string('responsex', 'scormreport_interactions', $id);
 204                  }
 205                  if ($displayoptions['right']) {
 206                      $columns[] = 'right' . $id;
 207                      $headers[] = get_string('rightanswerx', 'scormreport_interactions', $id);
 208                  }
 209                  if ($displayoptions['result']) {
 210                      $columns[] = 'result' . $id;
 211                      $headers[] = get_string('resultx', 'scormreport_interactions', $id);
 212                  }
 213              }
 214  
 215              if (!$download) {
 216                  $table = new \flexible_table('mod-scorm-report');
 217  
 218                  $table->define_columns($columns);
 219                  $table->define_headers($headers);
 220                  $table->define_baseurl($PAGE->url);
 221  
 222                  $table->sortable(true);
 223                  $table->collapsible(true);
 224  
 225                  // This is done to prevent redundant data, when a user has multiple attempts.
 226                  $table->column_suppress('picture');
 227                  $table->column_suppress('fullname');
 228                  foreach ($extrafields as $field) {
 229                      $table->column_suppress($field);
 230                  }
 231  
 232                  $table->no_sorting('start');
 233                  $table->no_sorting('finish');
 234                  $table->no_sorting('score');
 235                  $table->no_sorting('checkbox');
 236                  $table->no_sorting('picture');
 237  
 238                  for ($id = 0; $id < $questioncount; $id++) {
 239                      if ($displayoptions['qtext']) {
 240                          $table->no_sorting('question'.$id);
 241                      }
 242                      if ($displayoptions['resp']) {
 243                          $table->no_sorting('response'.$id);
 244                      }
 245                      if ($displayoptions['right']) {
 246                          $table->no_sorting('right'.$id);
 247                      }
 248                      if ($displayoptions['result']) {
 249                          $table->no_sorting('result'.$id);
 250                      }
 251                  }
 252  
 253                  foreach ($scoes as $sco) {
 254                      if ($sco->launch != '') {
 255                          $table->no_sorting('scograde'.$sco->id);
 256                      }
 257                  }
 258  
 259                  $table->column_class('picture', 'picture');
 260                  $table->column_class('fullname', 'bold');
 261                  $table->column_class('score', 'bold');
 262  
 263                  $table->set_attribute('cellspacing', '0');
 264                  $table->set_attribute('id', 'attempts');
 265                  $table->set_attribute('class', 'generaltable generalbox');
 266  
 267                  // Start working -- this is necessary as soon as the niceties are over.
 268                  $table->setup();
 269              } else if ($download == 'ODS') {
 270                  require_once("$CFG->libdir/odslib.class.php");
 271  
 272                  $filename .= ".ods";
 273                  // Creating a workbook.
 274                  $workbook = new \MoodleODSWorkbook("-");
 275                  // Sending HTTP headers.
 276                  $workbook->send($filename);
 277                  // Creating the first worksheet.
 278                  $sheettitle = get_string('report', 'scorm');
 279                  $myxls = $workbook->add_worksheet($sheettitle);
 280                  // Format types.
 281                  $format = $workbook->add_format();
 282                  $format->set_bold(0);
 283                  $formatbc = $workbook->add_format();
 284                  $formatbc->set_bold(1);
 285                  $formatbc->set_align('center');
 286                  $formatb = $workbook->add_format();
 287                  $formatb->set_bold(1);
 288                  $formaty = $workbook->add_format();
 289                  $formaty->set_bg_color('yellow');
 290                  $formatc = $workbook->add_format();
 291                  $formatc->set_align('center');
 292                  $formatr = $workbook->add_format();
 293                  $formatr->set_bold(1);
 294                  $formatr->set_color('red');
 295                  $formatr->set_align('center');
 296                  $formatg = $workbook->add_format();
 297                  $formatg->set_bold(1);
 298                  $formatg->set_color('green');
 299                  $formatg->set_align('center');
 300                  // Here starts workshhet headers.
 301  
 302                  $colnum = 0;
 303                  foreach ($headers as $item) {
 304                      $myxls->write(0, $colnum, $item, $formatbc);
 305                      $colnum++;
 306                  }
 307                  $rownum = 1;
 308              } else if ($download == 'Excel') {
 309                  require_once("$CFG->libdir/excellib.class.php");
 310  
 311                  $filename .= ".xls";
 312                  // Creating a workbook.
 313                  $workbook = new \MoodleExcelWorkbook("-");
 314                  // Sending HTTP headers.
 315                  $workbook->send($filename);
 316                  // Creating the first worksheet.
 317                  $sheettitle = get_string('report', 'scorm');
 318                  $myxls = $workbook->add_worksheet($sheettitle);
 319                  // Format types.
 320                  $format = $workbook->add_format();
 321                  $format->set_bold(0);
 322                  $formatbc = $workbook->add_format();
 323                  $formatbc->set_bold(1);
 324                  $formatbc->set_align('center');
 325                  $formatb = $workbook->add_format();
 326                  $formatb->set_bold(1);
 327                  $formaty = $workbook->add_format();
 328                  $formaty->set_bg_color('yellow');
 329                  $formatc = $workbook->add_format();
 330                  $formatc->set_align('center');
 331                  $formatr = $workbook->add_format();
 332                  $formatr->set_bold(1);
 333                  $formatr->set_color('red');
 334                  $formatr->set_align('center');
 335                  $formatg = $workbook->add_format();
 336                  $formatg->set_bold(1);
 337                  $formatg->set_color('green');
 338                  $formatg->set_align('center');
 339  
 340                  $colnum = 0;
 341                  foreach ($headers as $item) {
 342                      $myxls->write(0, $colnum, $item, $formatbc);
 343                      $colnum++;
 344                  }
 345                  $rownum = 1;
 346              } else if ($download == 'CSV') {
 347                  $csvexport = new \csv_export_writer("tab");
 348                  $csvexport->set_filename($filename, ".txt");
 349                  $csvexport->add_data($headers);
 350              }
 351  
 352              if (!$download) {
 353                  $sort = $table->get_sql_sort();
 354              } else {
 355                  $sort = '';
 356              }
 357              // Fix some wired sorting.
 358              if (empty($sort)) {
 359                  $sort = ' ORDER BY uniqueid';
 360              } else {
 361                  $sort = ' ORDER BY '.$sort;
 362              }
 363  
 364              if (!$download) {
 365                  // Add extra limits due to initials bar.
 366                  list($twhere, $tparams) = $table->get_sql_where();
 367                  if ($twhere) {
 368                      $where .= ' AND '.$twhere; // Initial bar.
 369                      $params = array_merge($params, $tparams);
 370                  }
 371  
 372                  if (!empty($countsql)) {
 373                      $count = $DB->get_record_sql($countsql, $params);
 374                      $totalinitials = $count->nbresults;
 375                      if ($twhere) {
 376                          $countsql .= ' AND '.$twhere;
 377                      }
 378                      $count = $DB->get_record_sql($countsql, $params);
 379                      $total  = $count->nbresults;
 380                  }
 381  
 382                  $table->pagesize($pagesize, $total);
 383  
 384                  echo \html_writer::start_div('scormattemptcounts');
 385                  if ( $count->nbresults == $count->nbattempts ) {
 386                      echo get_string('reportcountattempts', 'scorm', $count);
 387                  } else if ( $count->nbattempts > 0 ) {
 388                      echo get_string('reportcountallattempts', 'scorm', $count);
 389                  } else {
 390                      echo $count->nbusers.' '.get_string('users');
 391                  }
 392                  echo \html_writer::end_div();
 393              }
 394  
 395              // Fetch the attempts.
 396              if (!$download) {
 397                  $attempts = $DB->get_records_sql($select.$from.$where.$sort, $params,
 398                  $table->get_page_start(), $table->get_page_size());
 399                  echo \html_writer::start_div('', array('id' => 'scormtablecontainer'));
 400                  if ($candelete) {
 401                      // Start form.
 402                      $strreallydel  = addslashes_js(get_string('deleteattemptcheck', 'scorm'));
 403                      echo \html_writer::start_tag('form', array('id' => 'attemptsform', 'method' => 'post',
 404                                                                  'action' => $PAGE->url->out(false),
 405                                                                  'onsubmit' => 'return confirm("'.$strreallydel.'");'));
 406                      echo \html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'action', 'value' => 'delete'));
 407                      echo \html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 408                      echo \html_writer::start_div('', array('style' => 'display: none;'));
 409                      echo \html_writer::input_hidden_params($PAGE->url);
 410                      echo \html_writer::end_div();
 411                      echo \html_writer::start_div();
 412                  }
 413                  $table->initialbars($totalinitials > 20); // Build table rows.
 414              } else {
 415                  $attempts = $DB->get_records_sql($select.$from.$where.$sort, $params);
 416              }
 417              if ($attempts) {
 418                  foreach ($attempts as $scouser) {
 419                      $row = array();
 420                      if (!empty($scouser->attempt)) {
 421                          $timetracks = scorm_get_sco_runtime($scorm->id, false, $scouser->userid, $scouser->attempt);
 422                      } else {
 423                          $timetracks = '';
 424                      }
 425                      if (in_array('checkbox', $columns)) {
 426                          if ($candelete && !empty($timetracks->start)) {
 427                              $row[] = $this->generate_row_checkbox('attemptid[]', "{$scouser->userid}:{$scouser->attempt}");
 428                          } else if ($candelete) {
 429                              $row[] = '';
 430                          }
 431                      }
 432                      if (in_array('picture', $columns)) {
 433                          $user = new \stdClass();
 434                          $additionalfields = explode(',', implode(',', \core_user\fields::get_picture_fields()));
 435                          $user = username_load_fields_from_object($user, $scouser, null, $additionalfields);
 436                          $user->id = $scouser->userid;
 437                          $row[] = $OUTPUT->user_picture($user, array('courseid' => $course->id));
 438                      }
 439                      if (!$download) {
 440                          $url = new \moodle_url('/user/view.php', array('id' => $scouser->userid, 'course' => $course->id));
 441                          $row[] = \html_writer::link($url, fullname($scouser));
 442                      } else {
 443                          $row[] = fullname($scouser);
 444                      }
 445                      foreach ($extrafields as $field) {
 446                          $row[] = s($scouser->{$field});
 447                      }
 448                      if (empty($timetracks->start)) {
 449                          $row[] = '-';
 450                          $row[] = '-';
 451                          $row[] = '-';
 452                          $row[] = '-';
 453                      } else {
 454                          if (!$download) {
 455                              $url = new \moodle_url('/mod/scorm/report/userreport.php',
 456                                  array('id' => $cm->id,
 457                                      'user' => $scouser->userid,
 458                                      'attempt' => $scouser->attempt,
 459                                      'mode' => 'interactions'));
 460                              $row[] = \html_writer::link($url, $scouser->attempt);
 461                          } else {
 462                              $row[] = $scouser->attempt;
 463                          }
 464                          if ($download == 'ODS' || $download == 'Excel' ) {
 465                              $row[] = userdate($timetracks->start, get_string("strftimedatetime", "langconfig"));
 466                          } else {
 467                              $row[] = userdate($timetracks->start);
 468                          }
 469                          if ($download == 'ODS' || $download == 'Excel' ) {
 470                              $row[] = userdate($timetracks->finish, get_string('strftimedatetime', 'langconfig'));
 471                          } else {
 472                              $row[] = userdate($timetracks->finish);
 473                          }
 474                          $row[] = scorm_grade_user_attempt($scorm, $scouser->userid, $scouser->attempt);
 475                      }
 476                      // Print out all scores of attempt.
 477                      $emptyrow = $download ? '' : '&nbsp;';
 478                      foreach ($scoes as $sco) {
 479                          if ($sco->launch != '') {
 480                              if ($trackdata = scorm_get_tracks($sco->id, $scouser->userid, $scouser->attempt)) {
 481                                  if ($trackdata->status == '') {
 482                                      $trackdata->status = 'notattempted';
 483                                  }
 484                                  $strstatus = get_string($trackdata->status, 'scorm');
 485                                  // If raw score exists, print it.
 486                                  if ($trackdata->score_raw != '') {
 487                                      $score = $trackdata->score_raw;
 488                                      // Add max score if it exists.
 489                                      if (isset($trackdata->score_max)) {
 490                                          $score .= '/'.$trackdata->score_max;
 491                                      }
 492                                  } else { // Else print out status.
 493                                      $score = $strstatus;
 494                                  }
 495                                  if (!$download) {
 496                                      $url = new \moodle_url('/mod/scorm/report/userreporttracks.php', array('id' => $cm->id,
 497                                          'scoid' => $sco->id, 'user' => $scouser->userid, 'attempt' => $scouser->attempt,
 498                                          'mode' => 'interactions'));
 499                                      $row[] = $OUTPUT->pix_icon($trackdata->status, $strstatus, 'scorm') . '<br>' .
 500                                          \html_writer::link($url, $score, array('title' => get_string('details', 'scorm')));
 501                                  } else {
 502                                      $row[] = $score;
 503                                  }
 504                                  // Interaction data.
 505                                  for ($i = 0; $i < $questioncount; $i++) {
 506                                      if ($displayoptions['qtext']) {
 507                                          $element = 'cmi.interactions_'.$i.'.id';
 508                                          if (isset($trackdata->$element)) {
 509                                              $row[] = s($trackdata->$element);
 510                                          } else {
 511                                              $row[] = $emptyrow;
 512                                          }
 513                                      }
 514                                      if ($displayoptions['resp']) {
 515                                          $element = 'cmi.interactions_'.$i.'.student_response';
 516                                          if (isset($trackdata->$element)) {
 517                                              $row[] = s($trackdata->$element);
 518                                          } else {
 519                                              $row[] = $emptyrow;
 520                                          }
 521                                      }
 522                                      if ($displayoptions['right']) {
 523                                          $j = 0;
 524                                          $element = 'cmi.interactions_'.$i.'.correct_responses_'.$j.'.pattern';
 525                                          $rightans = '';
 526                                          if (isset($trackdata->$element)) {
 527                                              while (isset($trackdata->$element)) {
 528                                                  if ($j > 0) {
 529                                                      $rightans .= ',';
 530                                                  }
 531                                                  $rightans .= s($trackdata->$element);
 532                                                  $j++;
 533                                                  $element = 'cmi.interactions_'.$i.'.correct_responses_'.$j.'.pattern';
 534                                              }
 535                                              $row[] = $rightans;
 536                                          } else {
 537                                              $row[] = $emptyrow;
 538                                          }
 539                                      }
 540                                      if ($displayoptions['result']) {
 541                                          $element = 'cmi.interactions_'.$i.'.result';
 542                                          if (isset($trackdata->$element)) {
 543                                              $row[] = s($trackdata->$element);
 544                                          } else {
 545                                              $row[] = $emptyrow;
 546                                          }
 547                                      }
 548                                  }
 549                                  // End of interaction data.
 550                              } else {
 551                                  // If we don't have track data, we haven't attempted yet.
 552                                  $strstatus = get_string('notattempted', 'scorm');
 553                                  if (!$download) {
 554                                      $row[] = $OUTPUT->pix_icon('notattempted', $strstatus, 'scorm') . '<br>' . $strstatus;
 555                                  } else {
 556                                      $row[] = $strstatus;
 557                                  }
 558                                  // Complete the empty cells.
 559                                  for ($i = 0; $i < count($columns) - $nbmaincolumns; $i++) {
 560                                      $row[] = $emptyrow;
 561                                  }
 562                              }
 563                          }
 564                      }
 565  
 566                      if (!$download) {
 567                          $table->add_data($row);
 568                      } else if ($download == 'Excel' or $download == 'ODS') {
 569                          $colnum = 0;
 570                          foreach ($row as $item) {
 571                              $myxls->write($rownum, $colnum, $item, $format);
 572                              $colnum++;
 573                          }
 574                          $rownum++;
 575                      } else if ($download == 'CSV') {
 576                          $csvexport->add_data($row);
 577                      }
 578                  }
 579                  if (!$download) {
 580                      $table->finish_output();
 581                      if ($candelete) {
 582                          echo \html_writer::start_tag('table', array('id' => 'commands'));
 583                          echo \html_writer::start_tag('tr').\html_writer::start_tag('td');
 584                          echo $this->generate_delete_selected_button();
 585                          echo \html_writer::end_tag('td').\html_writer::end_tag('tr').\html_writer::end_tag('table');
 586                          // Close form.
 587                          echo \html_writer::end_tag('div');
 588                          echo \html_writer::end_tag('form');
 589                      }
 590                  }
 591              } else {
 592                  if ($candelete && !$download) {
 593                      echo \html_writer::end_div();
 594                      echo \html_writer::end_tag('form');
 595                      $table->finish_output();
 596                  }
 597                  echo \html_writer::end_div();
 598              }
 599              // Show preferences form irrespective of attempts are there to report or not.
 600              if (!$download) {
 601                  $mform->set_data(compact('pagesize', 'attemptsmode'));
 602                  $mform->display();
 603              }
 604              if ($download == 'Excel' or $download == 'ODS') {
 605                  $workbook->close();
 606                  exit;
 607              } else if ($download == 'CSV') {
 608                  $csvexport->download_file();
 609                  exit;
 610              }
 611          } else {
 612              echo $OUTPUT->notification(get_string('noactivity', 'scorm'));
 613          }
 614      }// Function ends.
 615  }