Proyectos de Subversion Moodle

<?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 processes AJAX enrolment actions and returns JSON

 *

 * The general idea behind this file is that any errors should throw exceptions

 * which will be returned and acted upon by the calling AJAX script.

 *

 * @package    core_enrol

 * @copyright  2010 Sam Hemelryk

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

define('AJAX_SCRIPT', true);

require('../config.php');

require_once("$CFG->dirroot/enrol/locallib.php");

require_once("$CFG->dirroot/enrol/renderer.php");

require_once("$CFG->dirroot/group/lib.php");

// Must have the sesskey

$id      = required_param('id', PARAM_INT); // course id

$action  = required_param('action', PARAM_ALPHANUMEXT);

$PAGE->set_url(new moodle_url('/enrol/ajax.php', array('id'=>$id, 'action'=>$action)));

$course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);

$context = context_course::instance($course->id, MUST_EXIST);

if ($course->id == SITEID) {

    throw new moodle_exception('invalidcourse');

}

require_login($course);

require_capability('moodle/course:enrolreview', $context);

require_sesskey();

echo $OUTPUT->header(); // send headers

$manager = new course_enrolment_manager($PAGE, $course);

$outcome = new stdClass();

$outcome->success = true;

$outcome->response = new stdClass();

$outcome->error = '';

$searchanywhere = get_user_preferences('userselector_searchtype') === USER_SEARCH_CONTAINS;

switch ($action) {

    case 'unenrol':

        $ue = $DB->get_record('user_enrolments', array('id'=>required_param('ue', PARAM_INT)), '*', MUST_EXIST);

        list ($instance, $plugin) = $manager->get_user_enrolment_components($ue);

        if (!$instance || !$plugin || !enrol_is_enabled($instance->enrol) || !$plugin->allow_unenrol_user($instance, $ue) || !has_capability("enrol/$instance->enrol:unenrol", $manager->get_context()) || !$manager->unenrol_user($ue)) {

            throw new enrol_ajax_exception('unenrolnotpermitted');

        }

        break;

    case 'unassign':

        $role = required_param('role', PARAM_INT);

        $user = required_param('user', PARAM_INT);

        if (!has_capability('moodle/role:assign', $manager->get_context()) || !$manager->unassign_role_from_user($user, $role)) {

            throw new enrol_ajax_exception('unassignnotpermitted');

        }

        break;

    case 'assign':

        $user = $DB->get_record('user', array('id'=>required_param('user', PARAM_INT)), '*', MUST_EXIST);

        $roleid = required_param('roleid', PARAM_INT);

        if (!array_key_exists($roleid, $manager->get_assignable_roles())) {

            throw new enrol_ajax_exception('invalidrole');

        }

        if (!has_capability('moodle/role:assign', $manager->get_context()) || !$manager->assign_role_to_user($roleid, $user->id)) {

            throw new enrol_ajax_exception('assignnotpermitted');

        }

        $outcome->response->roleid = $roleid;

        break;

    case 'getassignable':

        $otheruserroles = optional_param('otherusers', false, PARAM_BOOL);

        $outcome->response = $manager->get_assignable_roles_for_json($otheruserroles);

        break;

    case 'searchotherusers':

        $search = optional_param('search', '', PARAM_RAW);

        $page = optional_param('page', 0, PARAM_INT);

        $outcome->response = $manager->search_other_users($search, $searchanywhere, $page);

        // TODO Does not support custom user profile fields (MDL-70456).

        $extrafields = \core_user\fields::get_identity_fields($context, false);

        $useroptions = array();

        // User is not enrolled, either link to site profile or do not link at all.

        if (has_capability('moodle/user:viewdetails', context_system::instance())) {

            $useroptions['courseid'] = SITEID;

        } else {

            $useroptions['link'] = false;

        }

        foreach ($outcome->response['users'] as &$user) {

            $user->userId = $user->id;

            $user->picture = $OUTPUT->user_picture($user, $useroptions);

            $user->fullname = fullname($user);

            $fieldvalues = array();

            foreach ($extrafields as $field) {

                $fieldvalues[] = s($user->{$field});

                unset($user->{$field});

            }

            $user->extrafields = implode(', ', $fieldvalues);

            unset($user->id);

        }

        // Chrome will display users in the order of the array keys, so we need

        // to ensure that the results ordered array keys. Fortunately, the JavaScript

        // does not care what the array keys are. It uses user.id where necessary.

        $outcome->response['users'] = array_values($outcome->response['users']);

        $outcome->success = true;

        break;

    default:

        throw new enrol_ajax_exception('unknowajaxaction');

}

echo json_encode($outcome);

die();