enrol/index.php

   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
  25 require('../config.php');
  26 require_once("$CFG->libdir/formslib.php");
  27
  28 $id = required_param('id', PARAM_INT);
  29 $returnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
  30
  31 if (!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
  47 if ($course->id == SITEID) {
  48     redirect("$CFG->wwwroot/");
  49 }
  50
  51 if (!$course->visible && !has_capability('moodle/course:viewhiddencourses', context_course::instance($course->id))) {
  52     throw new \moodle_exception('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 $PAGE->set_secondary_navigation(false);
  59 $PAGE->add_body_class('limitedwidth');
  60
  61 // do not allow enrols when in login-as session
  62 if (\core\session\manager::is_loggedinas() and $USER->loginascontext->contextlevel == CONTEXT_COURSE) {
  63     throw new \moodle_exception('loginasnoenrol', '', $CFG->wwwroot.'/course/view.php?id='.$USER->loginascontext->instanceid);
  64 }
  65
  66 // Check if user has access to the category where the course is located.
  67 if (!core_course_category::can_view_course_info($course) && !is_enrolled($context, $USER, '', true)) {
  68     throw new \moodle_exception('coursehidden', '', $CFG->wwwroot . '/');
  69 }
  70
  71 // get all enrol forms available in this course
  72 $enrols = enrol_get_plugins(true);
  73 $enrolinstances = enrol_get_instances($course->id, true);
  74 $forms = array();
  75 foreach($enrolinstances as $instance) {
  76     if (!isset($enrols[$instance->enrol])) {
  77         continue;
  78     }
  79     $form = $enrols[$instance->enrol]->enrol_page_hook($instance);
  80     if ($form) {
  81         $forms[$instance->id] = $form;
  82     }
  83 }
  84
  85 // Check if user already enrolled
  86 if (is_enrolled($context, $USER, '', true)) {
  87     if (!empty($SESSION->wantsurl)) {
  88         $destination = $SESSION->wantsurl;
  89         unset($SESSION->wantsurl);
  90     } else {
  91         $destination = "$CFG->wwwroot/course/view.php?id=$course->id";
  92     }
  93     redirect($destination);   // Bye!
  94 }
  95
  96 $PAGE->set_title($course->shortname);
  97 $PAGE->set_heading($course->fullname);
  98 $PAGE->navbar->add(get_string('enrolmentoptions','enrol'));
  99
 100 echo $OUTPUT->header();
 101 echo $OUTPUT->heading(get_string('enrolmentoptions','enrol'));
 102
 103 $courserenderer = $PAGE->get_renderer('core', 'course');
 104 echo $courserenderer->course_info_box($course);
 105
 106 //TODO: find if future enrolments present and display some info
 107
 108 foreach ($forms as $form) {
 109     echo $form;
 110 }
 111
 112 if (!$forms) {
 113     if (isguestuser()) {
 114         notice(get_string('noguestaccess', 'enrol'), get_login_url());
 115     } else if ($returnurl) {
 116         notice(get_string('notenrollable', 'enrol'), $returnurl);
 117     } else {
 118         $url = get_local_referer(false);
 119         if (empty($url)) {
 120             $url = new moodle_url('/index.php');
 121         }
 122         notice(get_string('notenrollable', 'enrol'), $url);
 123     }
 124 }
 125
 126 echo $OUTPUT->footer();