Proyectos de Subversion Moodle

<?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 you override role definitions in contexts.

 *

 * @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('../../config.php');

$contextid = required_param('contextid', PARAM_INT);

$roleid    = required_param('roleid', PARAM_INT);

list($context, $course, $cm) = get_context_info_array($contextid);

$url = new moodle_url('/admin/roles/override.php', array('contextid' => $contextid, 'roleid' => $roleid));

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 first.

require_login($course, false, $cm);

$safeoverridesonly = false;

if (!has_capability('moodle/role:override', $context)) {

    require_capability('moodle/role:safeoverride', $context);

    $safeoverridesonly = true;

}

$PAGE->set_url($url);

$PAGE->set_pagelayout('admin');

if ($context->contextlevel == CONTEXT_USER and $USER->id != $context->instanceid) {

    $PAGE->navigation->extend_for_user($user);

    $PAGE->set_context(context_course::instance($course->id));

    navigation_node::override_active_url(new moodle_url('/admin/roles/permissions.php',

        array('contextid'=>$context->id, 'userid'=>$context->instanceid, 'courseid'=>$course->id)));

} else {

    $PAGE->set_context($context);

    navigation_node::override_active_url(new moodle_url('/admin/roles/permissions.php', array('contextid'=>$context->id)));

}

$courseid = $course->id;

$returnurl = new moodle_url('/admin/roles/permissions.php', array('contextid' => $context->id));

// Handle the cancel button.

if (optional_param('cancel', false, PARAM_BOOL)) {

    redirect($returnurl);

}

$role = $DB->get_record('role', array('id'=>$roleid), '*', MUST_EXIST);

// These are needed early.

$assignableroles  = get_assignable_roles($context, ROLENAME_BOTH);

list($overridableroles, $overridecounts, $nameswithcounts) = get_overridable_roles($context, ROLENAME_BOTH, true);

// Work out an appropriate page title.

$contextname = $context->get_context_name();

$straction = get_string('overrideroles', 'core_role'); // Used by tabs.php.

$a = (object)array('context' => $contextname, 'role' => $overridableroles[$roleid]);

$title = get_string('overridepermissionsforrole', 'core_role', $a);

$currenttab = 'permissions';

$PAGE->set_title($title);

$PAGE->activityheader->disable();

$PAGE->navbar->add($straction);

switch ($context->contextlevel) {

    case CONTEXT_SYSTEM:

        throw new \moodle_exception('cannotoverridebaserole', 'error');

        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;

}

// Make sure this user can override that role.

if (empty($overridableroles[$roleid])) {

    $a = new stdClass;

    $a->roleid = $roleid;

    $a->context = $contextname;

    throw new \moodle_exception('cannotoverriderolehere', '', $context->get_url(), $a);

}

// If we are actually overriding a role, create the table object, and save changes if appropriate.

$overridestable = new core_role_override_permissions_table_advanced($context, $roleid, $safeoverridesonly);

$overridestable->read_submitted_permissions();

if (optional_param('savechanges', false, PARAM_BOOL) && confirm_sesskey()) {

    $overridestable->save_changes();

    $rolename = $overridableroles[$roleid];

    redirect($returnurl);

}

// Finally start page output.

echo $OUTPUT->header();

echo $OUTPUT->heading_with_help($title, 'overridepermissions', 'core_role');

// Show UI for overriding roles.

if (!empty($capabilities)) {

    echo $OUTPUT->box(get_string('nocapabilitiesincontext', 'core_role'), 'generalbox boxaligncenter');

} else {

    // Print the capabilities overrideable in this context.

    echo $OUTPUT->box_start('generalbox capbox');

    echo html_writer::start_tag('form', array('id'=>'overrideform', 'action'=>$PAGE->url->out(), 'method'=>'post'));

    echo html_writer::start_tag('div');

    echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));

    echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'roleid', 'value'=>$roleid));

    echo html_writer::tag('p', get_string('highlightedcellsshowinherit', 'core_role'), array('class'=>'overridenotice'));

    $overridestable->display();

    if ($overridestable->has_locked_capabilities()) {

        echo '<p class="overridenotice">' . get_string('safeoverridenotice', 'core_role') . "</p>\n";

    }

    echo html_writer::start_tag('div', array('class'=>'submit_buttons'));

    $attrs = array('type'=>'submit', 'name'=>'savechanges', 'value'=>get_string('savechanges'), 'class'=>'btn btn-primary');

    echo html_writer::empty_tag('input', $attrs);

    $attrs = array('type' => 'submit', 'name' => 'cancel', 'value' => get_string('cancel'),

        'class' => 'btn btn-secondary ml-1');

    echo html_writer::empty_tag('input', $attrs);

    echo html_writer::end_tag('div');

    echo html_writer::end_tag('div');

    echo html_writer::end_tag('form');

    echo $OUTPUT->box_end();

}

// Print a form to swap roles, and a link back to the all roles list.

echo html_writer::start_tag('div', array('class'=>'backlink'));

$select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);

$select->label = get_string('overrideanotherrole', 'core_role');

echo $OUTPUT->render($select);

echo html_writer::tag('p', html_writer::tag('a', get_string('backtoallroles', 'core_role'), array('href'=>$returnurl)));

echo html_writer::end_tag('div');

echo $OUTPUT->footer();