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

   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  require_once($CFG->dirroot.'/grade/export/lib.php');
  19  require_once($CFG->libdir.'/filelib.php');
  20  
  21  class grade_export_xml extends grade_export {
  22  
  23      public $plugin = 'xml';
  24      public $updatedgradesonly = false; // default to export ALL grades
  25  
  26      /**
  27       * Ensure we produce correctly formed XML content by encoding idnumbers appropriately
  28       *
  29       * @param string $idnumber
  30       * @return string
  31       */
  32      private static function xml_export_idnumber(string $idnumber): string {
  33          return htmlspecialchars($idnumber, ENT_QUOTES | ENT_XML1);
  34      }
  35  
  36      /**
  37       * Handle form processing for export. Note we need to handle the case where there are no 'itemids[]' being included in the
  38       * form, because each is disabled for selection due to having empty idnumber
  39       *
  40       * @param stdClass $formdata
  41       */
  42      public function process_form($formdata) {
  43          if (!isset($formdata->itemids)) {
  44              $formdata->itemids = self::EXPORT_SELECT_NONE;
  45          }
  46  
  47          parent::process_form($formdata);
  48      }
  49  
  50      /**
  51       * To be implemented by child classes
  52       * @param boolean $feedback
  53       * @param boolean $publish Whether to output directly, or send as a file
  54       * @return string
  55       */
  56      public function print_grades($feedback = false) {
  57          global $CFG;
  58          require_once($CFG->libdir.'/filelib.php');
  59  
  60          $export_tracking = $this->track_exports();
  61  
  62          $strgrades = get_string('grades');
  63  
  64          /// Calculate file name
  65          $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
  66          $downloadfilename = clean_filename("$shortname $strgrades.xml");
  67  
  68          make_temp_directory('gradeexport');
  69          $tempfilename = $CFG->tempdir .'/gradeexport/'. md5(sesskey().microtime().$downloadfilename);
  70          if (!$handle = fopen($tempfilename, 'w+b')) {
  71              throw new \moodle_exception('cannotcreatetempdir');
  72          }
  73  
  74          /// time stamp to ensure uniqueness of batch export
  75          fwrite($handle,  '<results batch="xml_export_'.time().'">'."\n");
  76  
  77          $export_buffer = array();
  78  
  79          $geub = new grade_export_update_buffer();
  80          $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
  81          $gui->require_active_enrolment($this->onlyactive);
  82          $gui->init();
  83          while ($userdata = $gui->next_user()) {
  84              $user = $userdata->user;
  85  
  86              if (empty($user->idnumber)) {
  87                  //id number must exist otherwise we cant match up students when importing
  88                  continue;
  89              }
  90  
  91              // studentgrades[] index should match with corresponding $index
  92              foreach ($userdata->grades as $itemid => $grade) {
  93                  $grade_item = $this->grade_items[$itemid];
  94                  $grade->grade_item =& $grade_item;
  95  
  96                  // MDL-11669, skip exported grades or bad grades (if setting says so)
  97                  if ($export_tracking) {
  98                      $status = $geub->track($grade);
  99                      if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
 100                          continue;
 101                      }
 102                  }
 103  
 104                  fwrite($handle,  "\t<result>\n");
 105  
 106                  if ($export_tracking) {
 107                      fwrite($handle,  "\t\t<state>$status</state>\n");
 108                  }
 109  
 110                  // only need id number
 111                  $gradeitemidnumber = self::xml_export_idnumber($grade_item->idnumber);
 112                  fwrite($handle, "\t\t<assignment>{$gradeitemidnumber}</assignment>\n");
 113                  // this column should be customizable to use either student id, idnumber, uesrname or email.
 114                  $useridnumber = self::xml_export_idnumber($user->idnumber);
 115                  fwrite($handle, "\t\t<student>{$useridnumber}</student>\n");
 116                  // Format and display the grade in the selected display type (real, letter, percentage).
 117                  if (is_array($this->displaytype)) {
 118                      // Grades display type came from the return of export_bulk_export_data() on grade publishing.
 119                      foreach ($this->displaytype as $gradedisplayconst) {
 120                          $gradestr = $this->format_grade($grade, $gradedisplayconst);
 121                          fwrite($handle,  "\t\t<score>$gradestr</score>\n");
 122                      }
 123                  } else {
 124                      // Grade display type submitted directly from the grade export form.
 125                      $gradestr = $this->format_grade($grade, $this->displaytype);
 126                      fwrite($handle,  "\t\t<score>$gradestr</score>\n");
 127                  }
 128  
 129                  if ($this->export_feedback) {
 130                      $feedbackstr = $this->format_feedback($userdata->feedbacks[$itemid], $grade);
 131                      fwrite($handle,  "\t\t<feedback>$feedbackstr</feedback>\n");
 132                  }
 133                  fwrite($handle,  "\t</result>\n");
 134              }
 135          }
 136          fwrite($handle,  "</results>");
 137          fclose($handle);
 138          $gui->close();
 139          $geub->close();
 140  
 141          if (defined('BEHAT_SITE_RUNNING')) {
 142              // If behat is running, we cannot test the output if we force a file download.
 143              include($tempfilename);
 144          } else {
 145              @header("Content-type: text/xml; charset=UTF-8");
 146              send_temp_file($tempfilename, $downloadfilename, false);
 147          }
 148      }
 149  }
 150  
 151