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 * This page shows all course enrolment options for current user.
19 *
20 * @package    core_enrol
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
25require('../config.php');
26require_once("$CFG->libdir/formslib.php");
27
28$id = required_param('id', PARAM_INT);
29$returnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
30
31if (!isloggedin()) {
32    $referer = get_local_referer();
33    if (empty($referer)) {
34        // A user that is not logged in has arrived directly on this page,
35        // they should be redirected to the course page they are trying to enrol on after logging in.
36        $SESSION->wantsurl = "$CFG->wwwroot/course/view.php?id=$id";
37    }
38    // do not use require_login here because we are usually coming from it,
39    // it would also mess up the SESSION->wantsurl
40    redirect(get_login_url());
41}
42
43$course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
44$context = context_course::instance($course->id, MUST_EXIST);
45
46// Everybody is enrolled on the frontpage
47if ($course->id == SITEID) {
48    redirect("$CFG->wwwroot/");
49}
50
51if (!$course->visible && !has_capability('moodle/course:viewhiddencourses', context_course::instance($course->id))) {
52    print_error('coursehidden');
53}
54
55$PAGE->set_course($course);
56$PAGE->set_pagelayout('incourse');
57$PAGE->set_url('/enrol/index.php', array('id'=>$course->id));
58
59// do not allow enrols when in login-as session
60if (\core\session\manager::is_loggedinas() and $USER->loginascontext->contextlevel == CONTEXT_COURSE) {
61    print_error('loginasnoenrol', '', $CFG->wwwroot.'/course/view.php?id='.$USER->loginascontext->instanceid);
62}
63
64// Check if user has access to the category where the course is located.
65if (!core_course_category::can_view_course_info($course) && !is_enrolled($context, $USER, '', true)) {
66    print_error('coursehidden', '', $CFG->wwwroot . '/');
67}
68
69// get all enrol forms available in this course
70$enrols = enrol_get_plugins(true);
71$enrolinstances = enrol_get_instances($course->id, true);
72$forms = array();
73foreach($enrolinstances as $instance) {
74    if (!isset($enrols[$instance->enrol])) {
75        continue;
76    }
77    $form = $enrols[$instance->enrol]->enrol_page_hook($instance);
78    if ($form) {
79        $forms[$instance->id] = $form;
80    }
81}
82
83// Check if user already enrolled
84if (is_enrolled($context, $USER, '', true)) {
85    if (!empty($SESSION->wantsurl)) {
86        $destination = $SESSION->wantsurl;
87        unset($SESSION->wantsurl);
88    } else {
89        $destination = "$CFG->wwwroot/course/view.php?id=$course->id";
90    }
91    redirect($destination);   // Bye!
92}
93
94$PAGE->set_title($course->shortname);
95$PAGE->set_heading($course->fullname);
96$PAGE->navbar->add(get_string('enrolmentoptions','enrol'));
97
98echo $OUTPUT->header();
99echo $OUTPUT->heading(get_string('enrolmentoptions','enrol'));
100
101$courserenderer = $PAGE->get_renderer('core', 'course');
102echo $courserenderer->course_info_box($course);
103
104//TODO: find if future enrolments present and display some info
105
106foreach ($forms as $form) {
107    echo $form;
108}
109
110if (!$forms) {
111    if (isguestuser()) {
112        notice(get_string('noguestaccess', 'enrol'), get_login_url());
113    } else if ($returnurl) {
114        notice(get_string('notenrollable', 'enrol'), $returnurl);
115    } else {
116        $url = get_local_referer(false);
117        if (empty($url)) {
118            $url = new moodle_url('/index.php');
119        }
120        notice(get_string('notenrollable', 'enrol'), $url);
121    }
122}
123
124echo $OUTPUT->footer();
125