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   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 $CFG->libdir.'/gradelib.php';
  19  require_once($CFG->libdir.'/xmlize.php');
  20  require_once $CFG->dirroot.'/grade/lib.php';
  21  require_once $CFG->dirroot.'/grade/import/lib.php';
  22  
  23  function import_xml_grades($text, $course, &$error) {
  24      global $USER, $DB;
  25  
  26      $importcode = get_new_importcode();
  27  
  28      $status = true;
  29  
  30      $content = xmlize($text);
  31  
  32      if (!empty($content['results']['#']['result'])) {
  33          $results = $content['results']['#']['result'];
  34  
  35          foreach ($results as $i => $result) {
  36              $gradeidnumber = $result['#']['assignment'][0]['#'];
  37              if (!$grade_items = grade_item::fetch_all(array('idnumber'=>$gradeidnumber, 'courseid'=>$course->id))) {
  38                  // gradeitem does not exist
  39                  // no data in temp table so far, abort
  40                  $status = false;
  41                  $error  = get_string('errincorrectgradeidnumber', 'gradeimport_xml', $gradeidnumber);
  42                  break;
  43              } else if (count($grade_items) != 1) {
  44                  $status = false;
  45                  $error  = get_string('errduplicategradeidnumber', 'gradeimport_xml', $gradeidnumber);
  46                  break;
  47              } else {
  48                  $grade_item = reset($grade_items);
  49              }
  50  
  51              // grade item locked, abort
  52              if ($grade_item->is_locked()) {
  53                  $status = false;
  54                  $error  = get_string('gradeitemlocked', 'grades');
  55                  break;
  56              }
  57  
  58              // check if user exist and convert idnumber to user id
  59              $useridnumber = $result['#']['student'][0]['#'];
  60              if (!$user = $DB->get_record('user', array('idnumber' =>$useridnumber))) {
  61                  // no user found, abort
  62                  $status = false;
  63                  $error = get_string('errincorrectuseridnumber', 'gradeimport_xml', $useridnumber);
  64                  break;
  65              }
  66  
  67              // check if grade_grade is locked and if so, abort
  68              if ($grade_grade = new grade_grade(array('itemid'=>$grade_item->id, 'userid'=>$user->id))) {
  69                  $grade_grade->grade_item =& $grade_item;
  70                  if ($grade_grade->is_locked()) {
  71                      // individual grade locked, abort
  72                      $status = false;
  73                      $error  = get_string('gradelocked', 'grades');
  74                      break;
  75                  }
  76              }
  77  
  78              $newgrade = new stdClass();
  79              $newgrade->itemid     = $grade_item->id;
  80              $newgrade->userid     = $user->id;
  81              $newgrade->importcode = $importcode;
  82              $newgrade->importer   = $USER->id;
  83  
  84              // check grade value exists and is a numeric grade
  85              if (isset($result['#']['score'][0]['#']) && $result['#']['score'][0]['#'] !== '-') {
  86                  if (is_numeric($result['#']['score'][0]['#'])) {
  87                      $newgrade->finalgrade = $result['#']['score'][0]['#'];
  88                  } else {
  89                      $status = false;
  90                      $error = get_string('badgrade', 'grades');
  91                      break;
  92                  }
  93              } else {
  94                  $newgrade->finalgrade = NULL;
  95              }
  96  
  97              // check grade feedback exists
  98              if (isset($result['#']['feedback'][0]['#'])) {
  99                  $newgrade->feedback = $result['#']['feedback'][0]['#'];
 100              } else {
 101                  $newgrade->feedback = NULL;
 102              }
 103  
 104              // insert this grade into a temp table
 105              $DB->insert_record('grade_import_values', $newgrade);
 106          }
 107  
 108      } else {
 109          // no results section found in xml,
 110          // assuming bad format, abort import
 111          $status = false;
 112          $error = get_string('errbadxmlformat', 'gradeimport_xml');
 113      }
 114  
 115      if ($status) {
 116          return $importcode;
 117  
 118      } else {
 119          import_cleanup($importcode);
 120          return false;
 121      }
 122  }
 123