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 $PAGE->set_url('/group/delete.php', array('courseid'=>$courseid,'groups'=>$groupids));
  20
  21 // Make sure course is OK and user has access to manage groups
  22 if (!$course = $DB->get_record('course', array('id' => $courseid))) {
  23     print_error('invalidcourseid');
  24 }
  25 require_login($course);
  26 $context = get_context_instance(CONTEXT_COURSE, $course->id);
  27 require_capability('moodle/course:managegroups', $context);
  28
  29 // Make sure all groups are OK and belong to course
  30 $groupidarray = explode(',',$groupids);
  31 $groupnames = array();
  32 foreach($groupidarray as $groupid) {
  33     if (!$group = $DB->get_record('groups', array('id' => $groupid))) {
  34         print_error('invalidgroupid');
  35     }
  36     if ($courseid != $group->courseid) {
  37         print_error('groupunknown', '', '', $group->courseid);
  38     }
  39     $groupnames[] = format_string($group->name);
  40 }
  41
  42 $returnurl='index.php?id='.$course->id;
  43
  44 if(count($groupidarray)==0) {
  45     print_error('errorselectsome','group',$returnurl);
  46 }
  47
  48 if ($confirm && data_submitted()) {
  49     if (!confirm_sesskey() ) {
  50         print_error('confirmsesskeybad','error',$returnurl);
  51     }
  52
  53     foreach($groupidarray as $groupid) {
  54         groups_delete_group($groupid);
  55     }
  56
  57     redirect($returnurl);
  58 } else {
  59     $PAGE->set_title(get_string('deleteselectedgroup', 'group'));
  60     $PAGE->set_heading($course->fullname . ': '. get_string('deleteselectedgroup', 'group'));
  61     echo $OUTPUT->header();
  62     $optionsyes = array('courseid'=>$courseid, 'groups'=>$groupids, 'sesskey'=>sesskey(), 'confirm'=>1);
  63     $optionsno = array('id'=>$courseid);
  64     if(count($groupnames)==1) {
  65         $message=get_string('deletegroupconfirm', 'group', $groupnames[0]);
  66     } else {
  67         $message=get_string('deletegroupsconfirm', 'group').'<ul>';
  68         foreach($groupnames as $groupname) {
  69             $message.='<li>'.$groupname.'</li>';
  70         }
  71         $message.='</ul>';
  72     }
  73     $formcontinue = new single_button(new moodle_url('delete.php', $optionsyes), get_string('yes'), 'post');
  74     $formcancel = new single_button(new moodle_url('index.php', $optionsno), get_string('no'), 'get');
  75     echo $OUTPUT->confirm($message, $formcontinue, $formcancel);
  76     echo $OUTPUT->footer();
  77 }