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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This file receives ajax callbacks for the grader report
*
* @package gradereport_grader
* @copyright 2008 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once '../../../config.php';
require_once $CFG->libdir.'/gradelib.php';
require_once $CFG->dirroot.'/grade/lib.php';
// require_once $CFG->dirroot.'/grade/report/grader/ajaxlib.php';
// require_once $CFG->dirroot.'/grade/report/grader/lib.php';
$courseid = required_param('id', PARAM_INT); // course id
$userid = optional_param('userid', false, PARAM_INT);
$itemid = optional_param('itemid', false, PARAM_INT);
$type = optional_param('type', false, PARAM_ALPHA);
$action = optional_param('action', false, PARAM_ALPHA);
$newvalue = optional_param('newvalue', false, PARAM_MULTILANG);
/// basic access checks
if (!$course = $DB->get_record('course', array('id' => $courseid))) {
print_error('nocourseid');
}
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_login($course);
switch ($action) {
case 'update':
if (!confirm_sesskey()) {
break;
}
require_capability('moodle/grade:edit', $context);
if (!empty($userid) && !empty($itemid) && $newvalue !== false && !empty($type)) {
// Save the grade or feedback
if (!$grade_item = grade_item::fetch(array('id'=>$itemid, 'courseid'=>$courseid))) { // we must verify course id here!
print_error('invalidgradeitemid');
}
/**
* Code copied from grade/report/grader/lib.php line 187+
*/
$warnings = array();
$finalvalue = null;
$finalgrade = null;
$feedback = null;
$json_object = new stdClass();
// Pre-process grade
if ($type == 'value' || $type == 'scale') {
$feedback = false;
$feedbackformat = false;
if ($grade_item->gradetype == GRADE_TYPE_SCALE) {
if ($newvalue == -1) { // -1 means no grade
$finalgrade = null;
} else {
$finalgrade = $newvalue;
}
} else {
$finalgrade = unformat_float($newvalue);
}
$errorstr = '';
// Warn if the grade is out of bounds.
if (is_null($finalgrade)) {
// ok
} else {
$bounded = $grade_item->bounded_grade($finalgrade);
if ($bounded > $finalgrade) {
$errorstr = 'lessthanmin';
} else if ($bounded < $finalgrade) {
$errorstr = 'morethanmax';
}
}
if ($errorstr) {
$user = $DB->get_record('user', array('id' => $userid), 'id, firstname, lastname');
$gradestr = new stdClass();
$gradestr->username = fullname($user);
$gradestr->itemname = $grade_item->get_name();
$json_object->message = get_string($errorstr, 'grades', $gradestr);
$json_object->result = "error";
}
$finalvalue = $finalgrade;
} else if ($type == 'feedback') {
$finalgrade = false;
$trimmed = trim($newvalue);
if (empty($trimmed)) {
$feedback = NULL;
} else {
$feedback = $newvalue;
}
$finalvalue = $feedback;
}
if (!empty($json_object->result) && $json_object->result == 'error') {
echo json_encode($json_object);
die();
} else {
$url = '/report/grader/index.php?id=' . $course->id;
$user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
$fullname = fullname($user);
$info = "{$grade_item->itemname}: $fullname";
add_to_log($course->id, 'grade', 'update', $url, $info);
$json_object->gradevalue = $finalvalue;
if ($grade_item->update_final_grade($userid, $finalgrade, 'gradebook', $feedback, FORMAT_MOODLE)) {
$json_object->result = 'success';
$json_object->message = false;
} else {
$json_object->result = 'error';
$json_object->message = "TO BE LOCALISED: Failure to update final grade!";
echo json_encode($json_object);
die();
}
// Get row data
$sql = "SELECT gg.id, gi.id AS itemid, gi.scaleid AS scale, gg.userid AS userid, finalgrade, gg.overridden AS overridden "
. "FROM {grade_grades} gg, {grade_items} gi WHERE "
. "gi.courseid = ? AND gg.itemid = gi.id AND gg.userid = ?";
$records = $DB->get_records_sql($sql, array($courseid, $userid));
$json_object->row = $records;
echo json_encode($json_object);
die();
}
} else {
$json_object = new stdClass();
$json_object->result = "error";
$json_object->message = "Missing parameter to ajax UPDATE callback: \n" .
" userid: $userid,\n itemid: $itemid\n, type: $type\n, newvalue: $newvalue";
echo json_encode($json_object);
}
break;
}
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