source: moodle/trunk/fuentes/admin/roles/classes/potential_assignees_course_and_above.php @ 136

Last change on this file since 136 was 136, checked in by mabarracus, 5 years ago

Ported code to xenial

File size: 2.8 KB
Line 
1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * Library code used by the roles administration interfaces.
19 *
20 * @package    core_role
21 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
22 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24
25defined('MOODLE_INTERNAL') || die();
26
27/**
28 * User selector subclass for the list of potential users on the assign roles page,
29 * when we are assigning in a context at or above the course level. In this case we
30 * show all the users in the system who do not already have the role.
31 */
32class core_role_potential_assignees_course_and_above extends core_role_assign_user_selector_base {
33    public function find_users($search) {
34        global $DB;
35
36        list($wherecondition, $params) = $this->search_sql($search, '');
37
38        $fields      = 'SELECT ' . $this->required_fields_sql('');
39        $countfields = 'SELECT COUNT(1)';
40
41        $sql = " FROM {user}
42                WHERE $wherecondition
43                      AND id NOT IN (
44                         SELECT r.userid
45                           FROM {role_assignments} r
46                          WHERE r.contextid = :contextid
47                                AND r.roleid = :roleid)";
48
49        list($sort, $sortparams) = users_order_by_sql('', $search, $this->accesscontext);
50        $order = ' ORDER BY ' . $sort;
51
52        $params['contextid'] = $this->context->id;
53        $params['roleid'] = $this->roleid;
54
55        if (!$this->is_validating()) {
56            $potentialmemberscount = $DB->count_records_sql($countfields . $sql, $params);
57            if ($potentialmemberscount > $this->maxusersperpage) {
58                return $this->too_many_results($search, $potentialmemberscount);
59            }
60        }
61
62        $availableusers = $DB->get_records_sql($fields . $sql . $order, array_merge($params, $sortparams));
63
64        if (empty($availableusers)) {
65            return array();
66        }
67
68        if ($search) {
69            $groupname = get_string('potusersmatching', 'core_role', $search);
70        } else {
71            $groupname = get_string('potusers', 'core_role');
72        }
73
74        return array($groupname => $availableusers);
75    }
76}
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