group/grouping.php

   1 <?php
   2 /**
   3  * Create grouping OR edit grouping settings.
   4  *
   5  * @copyright &copy; 2006 The Open University
   6  * @author N.D.Freear AT open.ac.uk
   7  * @author J.White AT open.ac.uk
   8  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   9  * @package groups
  10  */
  11 require_once('../config.php');
  12 require_once('lib.php');
  13 require_once($CFG->libdir.'/moodlelib.php');
  14 require_once('grouping_edit_form.php');
  15
  16 $courseid   = required_param('courseid', PARAM_INT);
  17 $id = optional_param('id', false, PARAM_INT);
  18
  19 $delete = optional_param('delete', false, PARAM_BOOL);
  20
  21 if (empty($CFG->enablegroupings)) {
  22     // NO GROUPIGS YET!
  23     error('No groupings yet');
  24 }
  25
  26 // Get the course information so we can print the header and
  27 // check the course id is valid
  28 $course = groups_get_course_info($courseid);
  29 if (! $course) {
  30     $success = false;
  31     print_error('invalidcourse'); //'The course ID is invalid'
  32 }
  33 if (GROUP_NOT_IN_GROUPING == $id) {
  34     print_error('errornotingroupingedit', 'group', groups_home_url($courseid), get_string('notingrouping', 'group'));
  35 }
  36
  37 /// basic access control checks
  38 if ($id) {
  39     if (!$grouping = get_record('groups_groupings', 'id', $id)) {
  40         error('Grouping ID was incorrect');
  41     }
  42     $context = get_context_instance(CONTEXT_COURSE, $course->id);
  43     require_capability('moodle/course:managegroups', $context);
  44 }
  45
  46 /// First create the form
  47 $editform = new grouping_edit_form('grouping.php', compact('grouping', 'courseid'));
  48
  49 /// Override defaults if group is set
  50 if (!empty($grouping)) {
  51     $editform->set_data($grouping);
  52 }
  53
  54 // preprocess data
  55 if ($delete) {
  56     if (groups_delete_grouping($id)) {
  57         redirect(groups_home_url($course->id));
  58     } else {
  59         print_error('erroreditgrouping', 'group', groups_home_url($course->id));
  60     }
  61 }
  62
  63 if ($editform->is_cancelled()) {
  64     redirect(groups_home_url($courseid, false, $id, false));
  65 } elseif ($data = $editform->get_data()) {
  66     $success = true;
  67
  68     if (empty($grouping)) { // New grouping
  69         if (!$id = groups_create_grouping($course->id, $data)) {
  70             print_error('erroreditgrouping');
  71         } else {
  72             $success = (bool)$id;
  73             $data->id = $id;
  74         }
  75     } else { // Updating grouping
  76         if (!groups_update_grouping($data, $course->id)) {
  77             print_error('groupingnotupdated');
  78         }
  79     }
  80
  81     if ($success) {
  82         redirect(groups_home_url($courseid, false, $id, false));
  83     } else {
  84         print_error('erroreditgrouping', 'group', groups_home_url($courseid));
  85     }
  86
  87 } else { // Prepare and output form
  88     $strgroups = get_string('groups');
  89     $strparticipants = get_string('participants');
  90
  91     if ($id) {
  92         $strheading = get_string('editgroupingsettings', 'group');
  93     } else {
  94         $strheading = get_string('creategrouping', 'group');
  95     }
  96     print_header("$course->shortname: ". $strheading,
  97                  $course->fullname,
  98                  "<a href=\"$CFG->wwwroot/course/view.php?id=$courseid\">$course->shortname</a> ".
  99                  "-> <a href=\"$CFG->wwwroot/user/index.php?id=$courseid\">$strparticipants</a> ".
 100                  '-> <a href="' .format_string(groups_home_url($courseid, false, $id, false)) . "\">$strgroups</a>".
 101                  "-> $strheading", '', '', true, '', user_login_string($course, $USER));
 102     print_heading($strheading);
 103     $editform->display();
 104     print_footer($course);
 105 }
 106 ?>