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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/>.
/*
* Handling all ajax request for comments API
*
* @package core
* @copyright 2010 Dongsheng Cai {@link http://dongsheng.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
define('AJAX_SCRIPT', true);
define('NO_DEBUG_DISPLAY', true);
require_once('../config.php');
require_once($CFG->dirroot . '/comment/lib.php');
$contextid = optional_param('contextid', SYSCONTEXTID, PARAM_INT);
$action = optional_param('action', '', PARAM_ALPHA);
if (empty($CFG->usecomments)) {
throw new comment_exception('commentsnotenabled', 'moodle');
}
list($context, $course, $cm) = get_context_info_array($contextid);
if ( $contextid == SYSCONTEXTID ) {
$course = $SITE;
}
$PAGE->set_url('/comment/comment_ajax.php');
// Allow anonymous user to view comments providing forcelogin now enabled
require_course_login($course, true, $cm);
$PAGE->set_context($context);
if (!empty($cm)) {
$PAGE->set_cm($cm, $course);
} else if (!empty($course)) {
$PAGE->set_course($course);
}
if (!confirm_sesskey()) {
$error = array('error'=>get_string('invalidsesskey', 'error'));
die(json_encode($error));
}
$client_id = required_param('client_id', PARAM_ALPHANUM);
$area = optional_param('area', '', PARAM_AREA);
$commentid = optional_param('commentid', -1, PARAM_INT);
$content = optional_param('content', '', PARAM_RAW);
$itemid = optional_param('itemid', '', PARAM_INT);
$page = optional_param('page', 0, PARAM_INT);
$component = optional_param('component', '', PARAM_COMPONENT);
// initilising comment object
$args = new stdClass;
$args->context = $context;
$args->course = $course;
$args->cm = $cm;
$args->area = $area;
$args->itemid = $itemid;
$args->client_id = $client_id;
$args->component = $component;
$manager = new comment($args);
echo $OUTPUT->header(); // send headers
// process ajax request
switch ($action) {
case 'add':
if ($manager->can_post()) {
$result = $manager->add($content);
if (!empty($result) && is_object($result)) {
$result->count = $manager->count();
$result->client_id = $client_id;
echo json_encode($result);
die();
}
}
break;
case 'delete':
$comment_record = $DB->get_record('comments', array('id'=>$commentid));
if ($manager->can_delete($commentid) || $comment_record->userid == $USER->id) {
if ($manager->delete($commentid)) {
$result = array(
'client_id' => $client_id,
'commentid' => $commentid
);
echo json_encode($result);
die();
}
}
break;
case 'get':
default:
if ($manager->can_view()) {
$comments = $manager->get_comments($page);
$result = array(
'list' => $comments,
'count' => $manager->count(),
'pagination' => $manager->get_pagination($page),
'client_id' => $client_id
);
echo json_encode($result);
die();
}
break;
}
if (!isloggedin()) {
// tell user to log in to view comments
echo json_encode(array('error'=>'require_login'));
}
// ignore request
die;