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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?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/>.

/**
 * Lets the user define and edit roles.
 *
 * Responds to actions:
 *   [blank]   - list roles.
 *   delete    - delete a role (with are-you-sure)
 *   moveup    - change the sort order
 *   movedown  - change the sort order
 *
 * For all but the first two of those, you also need a roleid parameter, and
 * possibly some other data.
 *
 * @package    core_role
 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . '/../../config.php');
require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->dirroot . '/' . $CFG->admin . '/roles/lib.php');

$action = optional_param('action', '', PARAM_ALPHA);
if ($action) {
    $roleid = required_param('roleid', PARAM_INT);
} else {
    $roleid = 0;
}

// Get the base URL for this and related pages into a convenient variable.
$baseurl = $CFG->wwwroot . '/' . $CFG->admin . '/roles/manage.php';
$defineurl = $CFG->wwwroot . '/' . $CFG->admin . '/roles/define.php';

admin_externalpage_setup('defineroles');

// Check access permissions.
$systemcontext = context_system::instance();
require_capability('moodle/role:manage', $systemcontext);

// Get some basic data we are going to need.
$roles = role_fix_names(get_all_roles(), $systemcontext, ROLENAME_ORIGINAL);

$undeletableroles = array();
$undeletableroles[$CFG->notloggedinroleid] = 1;
$undeletableroles[$CFG->guestroleid] = 1;
$undeletableroles[$CFG->defaultuserroleid] = 1;

> $PAGE->set_primary_active_tab('siteadminnode'); // Process submitted data. > $PAGE->navbar->add(get_string('defineroles', 'role'), $PAGE->url); $confirmed = (optional_param('confirm', false, PARAM_BOOL) && data_submitted() && confirm_sesskey()); >
switch ($action) { case 'delete': if (isset($undeletableroles[$roleid])) {
< print_error('cannotdeletethisrole', '', $baseurl);
> throw new \moodle_exception('cannotdeletethisrole', '', $baseurl);
} if (!$confirmed) { // Show confirmation. echo $OUTPUT->header(); $optionsyes = array('action'=>'delete', 'roleid'=>$roleid, 'sesskey'=>sesskey(), 'confirm'=>1); $a = new stdClass(); $a->id = $roleid;
< $a->name = $roles[$roleid]->name;
> $a->name = $roles[$roleid]->localname;
$a->shortname = $roles[$roleid]->shortname; $a->count = $DB->count_records_select('role_assignments', 'roleid = ?', array($roleid), 'COUNT(DISTINCT userid)'); $formcontinue = new single_button(new moodle_url($baseurl, $optionsyes), get_string('yes')); $formcancel = new single_button(new moodle_url($baseurl), get_string('no'), 'get'); echo $OUTPUT->confirm(get_string('deleterolesure', 'core_role', $a), $formcontinue, $formcancel); echo $OUTPUT->footer(); die; } if (!delete_role($roleid)) { // The delete failed.
< print_error('cannotdeleterolewithid', 'error', $baseurl, $roleid);
> throw new \moodle_exception('cannotdeleterolewithid', 'error', $baseurl, $roleid);
} // Deleted a role sitewide... redirect($baseurl); break; case 'moveup': if (confirm_sesskey()) { $prevrole = null; $thisrole = null; foreach ($roles as $role) { if ($role->id == $roleid) { $thisrole = $role; break; } else { $prevrole = $role; } } if (is_null($thisrole) || is_null($prevrole)) {
< print_error('cannotmoverolewithid', 'error', '', $roleid);
> throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);
} if (!switch_roles($thisrole, $prevrole)) {
< print_error('cannotmoverolewithid', 'error', '', $roleid);
> throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);
} } redirect($baseurl); break; case 'movedown': if (confirm_sesskey()) { $thisrole = null; $nextrole = null; foreach ($roles as $role) { if ($role->id == $roleid) { $thisrole = $role; } else if (!is_null($thisrole)) { $nextrole = $role; break; } } if (is_null($nextrole)) {
< print_error('cannotmoverolewithid', 'error', '', $roleid);
> throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);
} if (!switch_roles($thisrole, $nextrole)) {
< print_error('cannotmoverolewithid', 'error', '', $roleid);
> throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);
} } redirect($baseurl); break; } // Print the page header and tabs. echo $OUTPUT->header(); $currenttab = 'manage'; require('managetabs.php'); // Initialise table. $table = new html_table(); $table->colclasses = array('leftalign', 'leftalign', 'leftalign', 'leftalign'); $table->id = 'roles'; $table->attributes['class'] = 'admintable generaltable'; $table->head = array( get_string('role') . ' ' . $OUTPUT->help_icon('roles', 'core_role'), get_string('description'), get_string('roleshortname', 'core_role'), get_string('edit') ); // Get some strings outside the loop. $stredit = get_string('edit'); $strdelete = get_string('delete'); $strmoveup = get_string('moveup'); $strmovedown = get_string('movedown'); // Print a list of roles with edit/copy/delete/reorder icons. $table->data = array(); $firstrole = reset($roles); $lastrole = end($roles); foreach ($roles as $role) { // Basic data. $row = array( '<a href="' . $defineurl . '?action=view&amp;roleid=' . $role->id . '">' . $role->localname . '</a>', role_get_description($role), s($role->shortname), '', ); // Move up. if ($role->sortorder != $firstrole->sortorder) { $row[3] .= get_action_icon($baseurl . '?action=moveup&amp;roleid=' . $role->id . '&amp;sesskey=' . sesskey(), 'up', $strmoveup, $strmoveup); } else { $row[3] .= get_spacer(); } // Move down. if ($role->sortorder != $lastrole->sortorder) { $row[3] .= get_action_icon($baseurl . '?action=movedown&amp;roleid=' . $role->id . '&amp;sesskey=' . sesskey(), 'down', $strmovedown, $strmovedown); } else { $row[3] .= get_spacer(); } // Edit. $row[3] .= get_action_icon($defineurl . '?action=edit&amp;roleid=' . $role->id, 'edit', $stredit, get_string('editxrole', 'core_role', $role->localname)); // Delete. if (isset($undeletableroles[$role->id])) { $row[3] .= get_spacer(); } else { $row[3] .= get_action_icon($baseurl . '?action=delete&amp;roleid=' . $role->id, 'delete', $strdelete, get_string('deletexrole', 'core_role', $role->localname)); } $table->data[] = $row; } echo html_writer::table($table); echo $OUTPUT->container_start('buttons'); echo $OUTPUT->single_button(new moodle_url($defineurl, array('action' => 'add')), get_string('addrole', 'core_role'), 'get'); echo $OUTPUT->container_end(); echo $OUTPUT->footer(); die; function get_action_icon($url, $icon, $alt, $tooltip) { global $OUTPUT; return '<a title="' . $tooltip . '" href="'. $url . '">' . $OUTPUT->pix_icon('t/' . $icon, $alt) . '</a> '; } function get_spacer() { global $OUTPUT; return $OUTPUT->spacer(); }