admin/roles/classes/admins_potential_selector.php

   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  * Potential admin user selector.
  19  *
  20  * @package    core_role
  21  * @copyright  2010 Petr Skoda {@link http://skodak.org}
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 require_once($CFG->dirroot.'/user/selector/lib.php');
  28
  29 class core_role_admins_potential_selector extends user_selector_base {
  30     /**
  31      * Create instance.
  32      *
  33      * @param string $name control name
  34      * @param array $options should have two elements with keys groupid and courseid.
  35      */
  36     public function __construct($name = null, $options = array()) {
  37         global $CFG;
  38         if (is_null($name)) {
  39             $name = 'addselect';
  40         }
  41         $options['includecustomfields'] = true;
  42         $options['exclude'] = explode(',', $CFG->siteadmins);
  43         parent::__construct($name, $options);
  44     }
  45
  46     public function find_users($search) {
  47         global $CFG, $DB;
  48
  49         [$wherecondition, $params] = $this->search_sql($search, 'u');
  50         $params = array_merge($params, $this->userfieldsparams);
  51
  52         $fields = 'SELECT u.id, ' . $this->userfieldsselects;
  53         $countfields = 'SELECT COUNT(1)';
  54
  55         $sql = " FROM {user} u
  56                       $this->userfieldsjoin
  57                 WHERE $wherecondition AND mnethostid = :localmnet";
  58
  59         // It could be dangerous to make remote users admins and also this could lead to other problems.
  60         $params['localmnet'] = $CFG->mnet_localhost_id;
  61
  62         [$sort, $sortparams] = users_order_by_sql('u', $search, $this->accesscontext, $this->userfieldsmappings);
  63         $order = ' ORDER BY ' . $sort;
  64
  65         // Check to see if there are too many to show sensibly.
  66         if (!$this->is_validating()) {
  67             $potentialcount = $DB->count_records_sql($countfields . $sql, $params);
  68             if ($potentialcount > $this->maxusersperpage) {
  69                 return $this->too_many_results($search, $potentialcount);
  70             }
  71         }
  72
  73         $availableusers = $DB->get_records_sql($fields . $sql . $order, array_merge($params, $sortparams));
  74
  75         if (empty($availableusers)) {
  76             return array();
  77         }
  78
  79         if ($search) {
  80             $groupname = get_string('potusersmatching', 'core_role', $search);
  81         } else {
  82             $groupname = get_string('potusers', 'core_role');
  83         }
  84
  85         return array($groupname => $availableusers);
  86     }
  87
  88     protected function get_options() {
  89         global $CFG;
  90         $options = parent::get_options();
  91         $options['file'] = $CFG->admin . '/roles/lib.php';
  92         return $options;
  93     }
  94 }