3 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
18 require_once($CFG->dirroot.'/grade/export/lib.php');
19 require_once($CFG->libdir.'/filelib.php');
21 class grade_export_xml extends grade_export {
23 public $plugin = 'xml';
24 public $updatedgradesonly = false; // default to export ALL grades
27 * To be implemented by child classes
28 * @param boolean $feedback
29 * @param boolean $publish Whether to output directly, or send as a file
32 public function print_grades($feedback = false) {
34 require_once($CFG->libdir.'/filelib.php');
36 $export_tracking = $this->track_exports();
38 $strgrades = get_string('grades');
40 /// Calculate file name
41 $shortname = format_string($this->course->shortname, true, array('context' => get_context_instance(CONTEXT_COURSE, $this->course->id)));
42 $downloadfilename = clean_filename("$shortname $strgrades.xml");
44 make_upload_directory('temp/gradeexport');
45 $tempfilename = $CFG->dataroot .'/temp/gradeexport/'. md5(sesskey().microtime().$downloadfilename);
46 if (!$handle = fopen($tempfilename, 'w+b')) {
47 print_error('cannotcreatetempdir');
50 /// time stamp to ensure uniqueness of batch export
51 fwrite($handle, '<results batch="xml_export_'.time().'">'."\n");
53 $export_buffer = array();
55 $geub = new grade_export_update_buffer();
56 $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
58 while ($userdata = $gui->next_user()) {
59 $user = $userdata->user;
61 if (empty($user->idnumber)) {
62 //id number must exist otherwise we cant match up students when importing
66 // studentgrades[] index should match with corresponding $index
67 foreach ($userdata->grades as $itemid => $grade) {
68 $grade_item = $this->grade_items[$itemid];
69 $grade->grade_item =& $grade_item;
70 $gradestr = $this->format_grade($grade); // no formating for now
72 // MDL-11669, skip exported grades or bad grades (if setting says so)
73 if ($export_tracking) {
74 $status = $geub->track($grade);
75 if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
80 fwrite($handle, "\t<result>\n");
82 if ($export_tracking) {
83 fwrite($handle, "\t\t<state>$status</state>\n");
86 // only need id number
87 fwrite($handle, "\t\t<assignment>{$grade_item->idnumber}</assignment>\n");
88 // this column should be customizable to use either student id, idnumber, uesrname or email.
89 fwrite($handle, "\t\t<student>{$user->idnumber}</student>\n");
90 fwrite($handle, "\t\t<score>$gradestr</score>\n");
91 if ($this->export_feedback) {
92 $feedbackstr = $this->format_feedback($userdata->feedbacks[$itemid]);
93 fwrite($handle, "\t\t<feedback>$feedbackstr</feedback>\n");
95 fwrite($handle, "\t</result>\n");
98 fwrite($handle, "</results>");
103 @header("Content-type: text/xml; charset=UTF-8");
104 send_temp_file($tempfilename, $downloadfilename, false);