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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/>.
/**
* Web services admin library
*
* @package webservice
* @copyright 2009 Moodle Pty Ltd (http://moodle.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once($CFG->dirroot . '/user/selector/lib.php');
/*
* This class displays either all the Moodle users allowed to use a service,
* either all the other Moodle users.
*/
class service_user_selector extends user_selector_base {
protected $serviceid;
protected $displayallowedusers; //set to true if the selector displays the
//allowed users on this service
//, set to false if the selector displays the
// other users (false is the default default)
public function __construct($name, $options) {
parent::__construct($name, $options);
if (!empty($options['serviceid'])) {
$this->serviceid = $options['serviceid'];
} else {
throw new moodle_exception('serviceidnotfound');
}
$this->displayallowedusers = !empty($options['displayallowedusers']);
}
/**
* Find allowed or not allowed users of a service (depend of $this->displayallowedusers)
* @global object $DB
* @param <type> $search
* @return array
*/
public function find_users($search) {
global $DB;
//by default wherecondition retrieves all users except the deleted, not
//confirmed and guest
list($wherecondition, $params) = $this->search_sql($search, 'u');
$params['serviceid'] = $this->serviceid;
$fields = 'SELECT ' . $this->required_fields_sql('u');
$countfields = 'SELECT COUNT(1)';
if ($this->displayallowedusers) {
///the following SQL retrieve all users that are allowed to the serviceid
$sql = " FROM {user} u, {external_services_users} esu
WHERE $wherecondition
AND u.deleted = 0
AND esu.userid = u.id
AND esu.externalserviceid = :serviceid";
}
else {
///the following SQL retrieve all users that are not allowed to the serviceid
$sql = " FROM {user} u WHERE $wherecondition AND u.deleted = 0
AND NOT EXISTS (SELECT esu.userid FROM {external_services_users} esu
WHERE esu.externalserviceid = :serviceid
AND esu.userid = u.id)";
}
list($sort, $sortparams) = users_order_by_sql('u', $search, $this->accesscontext);
$order = ' ORDER BY ' . $sort;
if (!$this->is_validating()) {
$potentialmemberscount = $DB->count_records_sql($countfields . $sql, $params);
if ($potentialmemberscount > $this->maxusersperpage) {
return $this->too_many_results($search, $potentialmemberscount);
}
}
$availableusers = $DB->get_records_sql($fields . $sql . $order, array_merge($params, $sortparams));
if (empty($availableusers)) {
return array();
}
if ($search) {
$groupname = ($this->displayallowedusers) ?
get_string('serviceusersmatching', 'webservice', $search)
: get_string('potusersmatching', 'webservice', $search);
}
else {
$groupname = ($this->displayallowedusers) ?
get_string('serviceusers', 'webservice')
: get_string('potusers', 'webservice');
}
return array($groupname => $availableusers);
}
/**
* This options are automatically used by the AJAX search
* @global object $CFG
* @return object options pass to the constructor when AJAX search call a new selector
*/
protected function get_options() {
global $CFG;
$options = parent::get_options();
$options['file'] = $CFG->admin.'/webservice/lib.php'; //need to be set, otherwise
// the /user/selector/search.php
//will fail to find this user_selector class
$options['serviceid'] = $this->serviceid;
$options['displayallowedusers'] = $this->displayallowedusers;
return $options;
}
}