. require_once($CFG->dirroot.'/grade/export/lib.php'); class grade_export_xml extends grade_export { var $plugin = 'xml'; var $updatedgradesonly = false; // default to export ALL grades /** * To be implemented by child classes * @param boolean $feedback * @param boolean $publish Whether to output directly, or send as a file * @return string */ function print_grades($feedback = false) { global $CFG; require_once($CFG->libdir.'/filelib.php'); $export_tracking = $this->track_exports(); $strgrades = get_string('grades'); /// Calculate file name $downloadfilename = clean_filename("{$this->course->shortname} $strgrades.xml"); make_upload_directory('temp/gradeexport', false); $tempfilename = $CFG->dataroot .'/temp/gradeexport/'. md5(sesskey().microtime().$downloadfilename); if (!$handle = fopen($tempfilename, 'w+b')) { error("Could not create a temporary file into which to dump the XML data."); return false; } /// time stamp to ensure uniqueness of batch export fwrite($handle, ''."\n"); $export_buffer = array(); $geub = new grade_export_update_buffer(); $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid); $gui->init(); while ($userdata = $gui->next_user()) { $user = $userdata->user; if (empty($user->idnumber)) { //id number must exist continue; } // studentgrades[] index should match with corresponding $index foreach ($userdata->grades as $itemid => $grade) { $grade_item = $this->grade_items[$itemid]; $grade->grade_item =& $grade_item; $gradestr = $this->format_grade($grade); // no formating for now // MDL-11669, skip exported grades or bad grades (if setting says so) if ($export_tracking) { $status = $geub->track($grade); if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) { continue; } } fwrite($handle, "\t\n"); if ($export_tracking) { fwrite($handle, "\t\t$status\n"); } // only need id number fwrite($handle, "\t\t{$grade_item->idnumber}\n"); // this column should be customizable to use either student id, idnumber, uesrname or email. fwrite($handle, "\t\t{$user->idnumber}\n"); fwrite($handle, "\t\t$gradestr\n"); if ($this->export_feedback) { $feedbackstr = $this->format_feedback($userdata->feedbacks[$itemid]); fwrite($handle, "\t\t$feedbackstr\n"); } fwrite($handle, "\t\n"); } } fwrite($handle, ""); fclose($handle); $gui->close(); $geub->close(); if (strpos($CFG->wwwroot, 'https://') === 0) { //https sites - watch out for IE! KB812935 and KB316431 @header('Cache-Control: max-age=10'); @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); @header('Pragma: '); } else { //normal http - prevent caching at all cost @header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0'); @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); @header('Pragma: no-cache'); } header("Content-type: text/xml; charset=UTF-8"); header("Content-Disposition: attachment; filename=\"$downloadfilename\""); readfile_chunked($tempfilename); @unlink($tempfilename); exit(); } } ?>