group/delete.php

   1 <?php
   2 /**
   3  * Delete group
   4  *
   5  * @copyright &copy; 2008 The Open University
   6  * @author s.marshall AT open.ac.uk
   7  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   8  * @package groups
   9  */
  10
  11 require_once('../config.php');
  12 require_once('lib.php');
  13
  14 // Get and check parameters
  15 $courseid = required_param('courseid', PARAM_INT);
  16 $groupids = required_param('groups', PARAM_SEQUENCE);
  17 $confirm = optional_param('confirm', 0, PARAM_BOOL);
  18
  19 // Make sure course is OK and user has access to manage groups
  20 if (!$course = get_record('course', 'id', $courseid)) {
  21     error('Course ID was incorrect');
  22 }
  23 require_login($course);
  24 $context = get_context_instance(CONTEXT_COURSE, $course->id);
  25 require_capability('moodle/course:managegroups', $context);
  26
  27 // Make sure all groups are OK and belong to course
  28 $groupidarray = explode(',',$groupids);
  29 $groupnames = array();
  30 foreach($groupidarray as $groupid) {
  31     if (!$group = get_record('groups', 'id', $groupid)) {
  32         error('Group ID was incorrect');
  33     }
  34     if ($courseid != $group->courseid) {
  35         error('Group not on required course');
  36     }
  37     $groupnames[] = format_string($group->name);
  38 }
  39
  40 $returnurl='index.php?id='.$course->id;
  41
  42 if(count($groupidarray)==0) {
  43     print_error('errorselectsome','group',$returnurl);
  44 }
  45
  46 if ($confirm && data_submitted()) {
  47     if (!confirm_sesskey() ) {
  48         print_error('confirmsesskeybad','error',$returnurl);
  49     }
  50     begin_sql();
  51     foreach($groupidarray as $groupid) {
  52         if (!groups_delete_group($groupid)) {
  53             print_error('erroreditgroup', 'group', $returnurl);
  54         }
  55     }
  56     commit_sql();
  57     redirect($returnurl);
  58 } else {
  59     print_header(get_string('deleteselectedgroup', 'group'), get_string('deleteselectedgroup', 'group'));
  60     $optionsyes = array('courseid'=>$courseid, 'groups'=>$groupids, 'sesskey'=>sesskey(), 'confirm'=>1);
  61     $optionsno = array('id'=>$courseid);
  62     if(count($groupnames)==1) {
  63         $message=get_string('deletegroupconfirm', 'group', $groupnames[0]);
  64     } else {
  65         $message=get_string('deletegroupsconfirm', 'group').'<ul>';
  66         foreach($groupnames as $groupname) {
  67             $message.='<li>'.$groupname.'</li>';
  68         }
  69         $message.='</ul>';
  70     }
  71     notice_yesno($message, 'delete.php', 'index.php', $optionsyes, $optionsno, 'post', 'get');
  72     print_footer();
  73 }
  74 ?>