course/enrol.php

   1 <?PHP // $Id$
   2       // Asks for a course pass key, once only, and enrols that user
   3
   4     require_once("../config.php");
   5     require_once("lib.php");
   6
   7     require_variable($id);
   8
   9     require_login();
  10
  11     if (! $course = get_record("course", "id", $id) ) {
  12         error("That's an invalid course id");
  13     }
  14
  15     if ($form = data_submitted()) {
  16
  17         if ($form->password == $course->password) {
  18
  19             if (isguest()) {
  20                 add_to_log($course->id, "course", "guest", "view.php?id=$course->id", "$REMOTE_ADDR, $REMOTE_HOST");
  21
  22             } else if (!record_exists("user_students", "userid", $USER->id, "course", $course->id)) {
  23
  24                 if (! enrol_student($USER->id, $course->id)) {
  25                     error("An error occurred while trying to enrol you.");
  26                 }
  27
  28                 $subject = get_string("welcometocourse", "", $course->fullname);
  29
  30                 $a->coursename = $course->fullname;
  31                 $a->profileurl = "$CFG->wwwroot/user/view.php?id=$USER->id&course=$course->id";
  32                 $message = get_string("welcometocoursetext", "", $a);
  33
  34                 if (! $teacher = get_teacher($course->id)) {
  35                     $teacher = get_admin();
  36                 }
  37                 email_to_user($USER, $teacher, $subject, $message);
  38
  39                 add_to_log($course->id, "course", "enrol", "view.php?id=$course->id", "$USER->id");
  40             }
  41
  42             $USER->student["$id"] = true;
  43
  44             if ($SESSION->wantsurl) {
  45                 $destination = $SESSION->wantsurl;
  46                 unset($SESSION->wantsurl);
  47             } else {
  48                 $destination = "$CFG->wwwroot/course/view.php?id=$id";
  49             }
  50
  51             redirect($destination);
  52
  53         } else {
  54             $errormsg = get_string("enrolmentkeyhint", "", substr($course->password,0,1));
  55         }
  56     }
  57
  58
  59     if (! $site = get_site()) {
  60         error("Could not find a site!");
  61     }
  62
  63     if ($course->password == "") {   // no password, so enrol
  64
  65         if (isguest()) {
  66             add_to_log($course->id, "course", "guest", "view.php?id=$course->id", "$USER->id");
  67         } else {
  68             if (! enrol_student($USER->id, $course->id)) {
  69                 error("An error occurred while trying to enrol you.");
  70             }
  71             add_to_log($course->id, "course", "enrol", "view.php?id=$course->id", "$USER->id");
  72         }
  73
  74         $USER->student["$id"] = true;
  75
  76         if ($SESSION->wantsurl) {
  77             $destination = $SESSION->wantsurl;
  78             unset($SESSION->wantsurl);
  79         } else {
  80             $destination = "$CFG->wwwroot/course/view.php?id=$id";
  81         }
  82
  83         redirect($destination);
  84     }
  85
  86     $teacher = get_teacher($course->id);
  87
  88     $strloginto = get_string("loginto", "", $course->shortname);
  89     $strcourses = get_string("courses");
  90
  91     print_header($strloginto, $strloginto, "<A HREF=\".\">$strcourses</A> -> $strloginto", "form.password");
  92
  93     print_course($course);
  94
  95     include("enrol.html");
  96
  97     print_footer();
  98
  99
 100 ?>