MDL-67264 core_course: Begin set up for Activity chooser
[moodle.git] / course / switchrole.php
CommitLineData
7d2a0492 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 * The purpose of this file is to allow the user to switch roles and be redirected
19 * back to the page that they were on.
20 *
21 * This functionality is also supported in {@link /course/view.php} in order to comply
aae028d9 22 * with backwards compatibility.
7d2a0492 23 * The reason that we created this file was so that user didn't get redirected back
24 * to the course view page only to be redirected again.
25 *
5bcfd504 26 * @since Moodle 2.0
d9cb06dc 27 * @package course
7d2a0492 28 * @copyright 2009 Sam Hemelryk
29 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
30 */
31
32require_once('../config.php');
33require_once($CFG->dirroot.'/course/lib.php');
34
e26507b3 35$id = required_param('id', PARAM_INT);
aae028d9
PS
36$switchrole = optional_param('switchrole', -1, PARAM_INT);
37$returnurl = optional_param('returnurl', '', PARAM_RAW);
38
39if (strpos($returnurl, '?') === false) {
40 // Looks like somebody did not set proper page url, better go to course page.
41 $returnurl = new moodle_url('/course/view.php', array('id' => $id));
42} else {
43 if (strpos($returnurl, $CFG->wwwroot) !== 0) {
44 $returnurl = $CFG->wwwroot.$returnurl;
45 }
46 $returnurl = clean_param($returnurl, PARAM_URL);
47}
7d2a0492 48
99061152 49$PAGE->set_url('/course/switchrole.php', array('id'=>$id, 'switchrole'=>$switchrole));
d9cb06dc 50
99061152
DW
51if ($switchrole >= 0) {
52 require_sesskey();
53}
7d2a0492 54
aae028d9
PS
55if (!$course = $DB->get_record('course', array('id'=>$id))) {
56 redirect(new moodle_url('/'));
7d2a0492 57}
58
1f364c87 59$context = context_course::instance($course->id);
7d2a0492 60
aae028d9 61// Remove any switched roles before checking login.
7d2a0492 62if ($switchrole == 0) {
aae028d9 63 role_switch(0, $context);
7d2a0492 64}
65require_login($course);
66
67// Switchrole - sanity check in cost-order...
68if ($switchrole > 0 && has_capability('moodle/role:switchroles', $context)) {
aae028d9 69 // Is this role assignable in this context?
7d2a0492 70 // inquiring minds want to know...
71 $aroles = get_switchable_roles($context);
72 if (is_array($aroles) && isset($aroles[$switchrole])) {
73 role_switch($switchrole, $context);
7d2a0492 74 }
99061152
DW
75} else if ($switchrole < 0) {
76
77 $PAGE->set_title(get_string('switchroleto'));
78 $PAGE->set_heading($course->fullname);
79 $PAGE->set_pagelayout('incourse');
80
81 echo $OUTPUT->header();
82 echo $OUTPUT->heading(get_string('switchroleto'));
83
70b03eff
DW
84 // Overall criteria aggregation.
85 $roles = array();
86 $assumedrole = -1;
87 if (is_role_switched($course->id)) {
88 $roles[0] = get_string('switchrolereturn');
89 $assumedrole = $USER->access['rsw'][$context->path];
90 }
91 $availableroles = get_switchable_roles($context);
92 if (is_array($availableroles)) {
93 foreach ($availableroles as $key => $role) {
94 if ($assumedrole == (int)$key) {
95 continue;
96 }
97 $roles[$key] = $role;
98 }
99 }
100 echo $OUTPUT->box(markdown_to_html(get_string('switchroleto_help')));
101
102 foreach ($roles as $key => $role) {
103 $url = new moodle_url('/course/switchrole.php', array('id' => $id, 'switchrole' => $key, 'returnurl' => $returnurl));
1c4a0506 104 // Button encodes special characters, apply htmlspecialchars_decode() to avoid double escaping.
5cac5fa4 105 echo $OUTPUT->container($OUTPUT->single_button($url, htmlspecialchars_decode($role)), 'mx-3 mb-1');
70b03eff 106 }
99061152 107
8c224317 108 $url = new moodle_url($returnurl);
5cac5fa4 109 echo $OUTPUT->container($OUTPUT->action_link($url, get_string('cancel')), 'mx-3 mb-1');
8c224317 110
99061152
DW
111 echo $OUTPUT->footer();
112 exit;
7d2a0492 113}
114
fd1d8295 115redirect($returnurl);