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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;
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