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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/>.
/**
* Assign roles to users.
*
* @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->dirroot . '/' . $CFG->admin . '/roles/lib.php');
define("MAX_USERS_TO_LIST_PER_ROLE", 10);
$contextid = required_param('contextid', PARAM_INT);
$roleid = optional_param('roleid', 0, PARAM_INT);
$returnurl = optional_param('returnurl', null, PARAM_LOCALURL);
list($context, $course, $cm) = get_context_info_array($contextid);
$url = new moodle_url('/admin/roles/assign.php', array('contextid' => $contextid));
if ($course) {
$isfrontpage = ($course->id == SITEID);
} else {
$isfrontpage = false;
if ($context->contextlevel == CONTEXT_USER) {
$course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);
$user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);
$url->param('courseid', $course->id);
$url->param('userid', $user->id);
} else {
$course = $SITE;
}
}
// Security.
require_login($course, false, $cm);
require_capability('moodle/role:assign', $context);
navigation_node::override_active_url($url);
$pageurl = new moodle_url($url);
if ($returnurl) {
$pageurl->param('returnurl', $returnurl);
}
$PAGE->set_url($pageurl);
$PAGE->set_context($context);
$contextname = $context->get_context_name();
$courseid = $course->id;
// These are needed early because of tabs.php.
list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
$overridableroles = get_overridable_roles($context, ROLENAME_BOTH);
// Make sure this user can assign this role.
if ($roleid && !isset($assignableroles[$roleid])) {
$a = new stdClass;
$a->roleid = $roleid;
$a->context = $contextname;
print_error('cannotassignrolehere', '', $context->get_url(), $a);
}
// Work out an appropriate page title.
if ($roleid) {
$a = new stdClass;
$a->role = $assignableroles[$roleid];
$a->context = $contextname;
$title = get_string('assignrolenameincontext', 'core_role', $a);
} else {
if ($isfrontpage) {
$title = get_string('frontpageroles', 'admin');
} else {
$title = get_string('assignrolesin', 'core_role', $contextname);
}
}
// Process any incoming role assignments before printing the header.
if ($roleid) {
// Create the user selector objects.
$options = array('context' => $context, 'roleid' => $roleid);
$potentialuserselector = core_role_get_potential_user_selector($context, 'addselect', $options);
$currentuserselector = new core_role_existing_role_holders('removeselect', $options);
// Process incoming role assignments.
$errors = array();
if (optional_param('add', false, PARAM_BOOL) && confirm_sesskey()) {
$userstoassign = $potentialuserselector->get_selected_users();
if (!empty($userstoassign)) {
foreach ($userstoassign as $adduser) {
$allow = true;
if ($allow) {
role_assign($roleid, $adduser->id, $context->id);
}
}
$potentialuserselector->invalidate_selected_users();
$currentuserselector->invalidate_selected_users();
// Counts have changed, so reload.
list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
}
}
// Process incoming role unassignments.
if (optional_param('remove', false, PARAM_BOOL) && confirm_sesskey()) {
$userstounassign = $currentuserselector->get_selected_users();
if (!empty($userstounassign)) {
foreach ($userstounassign as $removeuser) {
// Unassign only roles that are added manually, no messing with other components!!!
role_unassign($roleid, $removeuser->id, $context->id, '');
}
$potentialuserselector->invalidate_selected_users();
$currentuserselector->invalidate_selected_users();
// Counts have changed, so reload.
list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
}
}
}
if (!empty($user) && ($user->id != $USER->id)) {
$PAGE->navigation->extend_for_user($user);
$PAGE->navbar->includesettingsbase = true;
}
$PAGE->set_pagelayout('admin');
if ($context->contextlevel == CONTEXT_BLOCK) {
// Do not show blocks when changing block's settings, it is confusing.
$PAGE->blocks->show_only_fake_blocks(true);
}
$PAGE->set_title($title);
switch ($context->contextlevel) {
case CONTEXT_SYSTEM:
require_once($CFG->libdir.'/adminlib.php');
admin_externalpage_setup('assignroles', '', array('contextid' => $contextid, 'roleid' => $roleid));
break;
case CONTEXT_USER:
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
$PAGE->set_heading($fullname);
$showroles = 1;
break;
case CONTEXT_COURSECAT:
$PAGE->set_heading($SITE->fullname);
break;
case CONTEXT_COURSE:
if ($isfrontpage) {
$PAGE->set_heading(get_string('frontpage', 'admin'));
} else {
$PAGE->set_heading($course->fullname);
}
break;
case CONTEXT_MODULE:
$PAGE->set_heading($context->get_context_name(false));
$PAGE->set_cacheable(false);
break;
case CONTEXT_BLOCK:
$PAGE->set_heading($PAGE->course->fullname);
break;
}
echo $OUTPUT->header();
// Print heading.
echo $OUTPUT->heading_with_help($title, 'assignroles', 'core_role');
if ($roleid) {
// Show UI for assigning a particular role to users.
// Print a warning if we are assigning system roles.
if ($context->contextlevel == CONTEXT_SYSTEM) {
echo $OUTPUT->notification(get_string('globalroleswarning', 'core_role'));
}
// Print the form.
$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
?>
<form id="assignform" method="post" action="<?php echo $assignurl ?>"><div>
<input type="hidden" name="sesskey" value="<?php echo sesskey() ?>" />
<table id="assigningrole" summary="" class="admintable roleassigntable generaltable" cellspacing="0">
<tr>
<td id="existingcell">
<p><label for="removeselect"><?php print_string('extusers', 'core_role'); ?></label></p>
<?php $currentuserselector->display() ?>
</td>
<td id="buttonscell">
<div id="addcontrols">
<input name="add" id="add" type="submit" value="<?php echo $OUTPUT->larrow().' '.get_string('add'); ?>"
title="<?php print_string('add'); ?>" class="btn btn-secondary"/><br />
</div>
<div id="removecontrols">
<input name="remove" id="remove" type="submit" value="<?php echo get_string('remove').' '.$OUTPUT->rarrow(); ?>"
title="<?php print_string('remove'); ?>" class="btn btn-secondary"/>
</div>
</td>
<td id="potentialcell">
<p><label for="addselect"><?php print_string('potusers', 'core_role'); ?></label></p>
<?php $potentialuserselector->display() ?>
</td>
</tr>
</table>
</div></form>
<?php
$PAGE->requires->js_init_call('M.core_role.init_add_assign_page');
if (!empty($errors)) {
$msg = '<p>';
foreach ($errors as $e) {
$msg .= $e.'<br />';
}
$msg .= '</p>';
echo $OUTPUT->box_start();
echo $OUTPUT->notification($msg);
echo $OUTPUT->box_end();
}
// Print a form to swap roles, and a link back to the all roles list.
echo '<div class="backlink">';
$select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);
$select->label = get_string('assignanotherrole', 'core_role');
echo $OUTPUT->render($select);
echo '<p><a href="' . $url . '">' . get_string('backtoallroles', 'core_role') . '</a></p>';
echo '</div>';
} else if (empty($assignableroles)) {
// Print a message that there are no roles that can me assigned here.
echo $OUTPUT->heading(get_string('notabletoassignroleshere', 'core_role'), 3);
} else {
// Show UI for choosing a role to assign.
// Print a warning if we are assigning system roles.
if ($context->contextlevel == CONTEXT_SYSTEM) {
echo $OUTPUT->notification(get_string('globalroleswarning', 'core_role'));
}
// Print instruction.
echo $OUTPUT->heading(get_string('chooseroletoassign', 'core_role'), 3);
// Get the names of role holders for roles with between 1 and MAX_USERS_TO_LIST_PER_ROLE users,
// and so determine whether to show the extra column.
$roleholdernames = array();
$strmorethanmax = get_string('morethan', 'core_role', MAX_USERS_TO_LIST_PER_ROLE);
$showroleholders = false;
foreach ($assignableroles as $roleid => $notused) {
$roleusers = '';
if (0 < $assigncounts[$roleid] && $assigncounts[$roleid] <= MAX_USERS_TO_LIST_PER_ROLE) {
$userfields = 'u.id, u.username, ' . get_all_user_name_fields(true, 'u');
$roleusers = get_role_users($roleid, $context, false, $userfields);
if (!empty($roleusers)) {
$strroleusers = array();
foreach ($roleusers as $user) {
$strroleusers[] = '<a href="' . $CFG->wwwroot . '/user/view.php?id=' . $user->id . '" >' . fullname($user) . '</a>';
}
$roleholdernames[$roleid] = implode('<br />', $strroleusers);
$showroleholders = true;
}
} else if ($assigncounts[$roleid] > MAX_USERS_TO_LIST_PER_ROLE) {
$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
$roleholdernames[$roleid] = '<a href="'.$assignurl.'">'.$strmorethanmax.'</a>';
} else {
$roleholdernames[$roleid] = '';
}
}
// Print overview table.
$table = new html_table();
$table->id = 'assignrole';
$table->head = array(get_string('role'), get_string('description'), get_string('userswiththisrole', 'core_role'));
$table->colclasses = array('leftalign role', 'leftalign', 'centeralign userrole');
$table->attributes['class'] = 'admintable generaltable';
if ($showroleholders) {
$table->headspan = array(1, 1, 2);
$table->colclasses[] = 'leftalign roleholder';
}
foreach ($assignableroles as $roleid => $rolename) {
$description = format_string($DB->get_field('role', 'description', array('id'=>$roleid)));
$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
$row = array('<a href="'.$assignurl.'">'.$rolename.'</a>',
$description, $assigncounts[$roleid]);
if ($showroleholders) {
$row[] = $roleholdernames[$roleid];
}
$table->data[] = $row;
}
echo html_writer::table($table);
if ($context->contextlevel > CONTEXT_USER) {
if ($returnurl) {
$url = new moodle_url($returnurl);
} else {
$url = $context->get_url();
}
echo html_writer::start_tag('div', array('class'=>'backlink'));
echo html_writer::tag('a', get_string('backto', '', $contextname), array('href' => $url));
echo html_writer::end_tag('div');
}
}
echo $OUTPUT->footer();