group/delete.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 /**
  19  * Delete group
  20  *
  21  * @package   core_group
  22  * @copyright 2008 The Open University, s.marshall AT open.ac.uk
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 require_once('../config.php');
  27 require_once('lib.php');
  28
  29 // Get and check parameters
  30 $courseid = required_param('courseid', PARAM_INT);
  31 $groupids = required_param('groups', PARAM_SEQUENCE);
  32 $confirm = optional_param('confirm', 0, PARAM_BOOL);
  33
  34 $PAGE->set_url('/group/delete.php', array('courseid'=>$courseid,'groups'=>$groupids));
  35
  36 // Make sure course is OK and user has access to manage groups
  37 if (!$course = $DB->get_record('course', array('id' => $courseid))) {
  38     print_error('invalidcourseid');
  39 }
  40 require_login($course);
  41 $context = get_context_instance(CONTEXT_COURSE, $course->id);
  42 require_capability('moodle/course:managegroups', $context);
  43 $changeidnumber = has_capability('moodle/course:changeidnumber', $context);
  44
  45 // Make sure all groups are OK and belong to course
  46 $groupidarray = explode(',',$groupids);
  47 $groupnames = array();
  48 foreach($groupidarray as $groupid) {
  49     if (!$group = $DB->get_record('groups', array('id' => $groupid))) {
  50         print_error('invalidgroupid');
  51     }
  52     if (!empty($group->idnumber) && !$changeidnumber) {
  53         print_error('grouphasidnumber', '', '', $group->name);
  54     }
  55     if ($courseid != $group->courseid) {
  56         print_error('groupunknown', '', '', $group->courseid);
  57     }
  58     $groupnames[] = format_string($group->name);
  59 }
  60
  61 $returnurl='index.php?id='.$course->id;
  62
  63 if(count($groupidarray)==0) {
  64     print_error('errorselectsome','group',$returnurl);
  65 }
  66
  67 if ($confirm && data_submitted()) {
  68     if (!confirm_sesskey() ) {
  69         print_error('confirmsesskeybad','error',$returnurl);
  70     }
  71
  72     foreach($groupidarray as $groupid) {
  73         groups_delete_group($groupid);
  74     }
  75
  76     redirect($returnurl);
  77 } else {
  78     $PAGE->set_title(get_string('deleteselectedgroup', 'group'));
  79     $PAGE->set_heading($course->fullname . ': '. get_string('deleteselectedgroup', 'group'));
  80     echo $OUTPUT->header();
  81     $optionsyes = array('courseid'=>$courseid, 'groups'=>$groupids, 'sesskey'=>sesskey(), 'confirm'=>1);
  82     $optionsno = array('id'=>$courseid);
  83     if(count($groupnames)==1) {
  84         $message=get_string('deletegroupconfirm', 'group', $groupnames[0]);
  85     } else {
  86         $message=get_string('deletegroupsconfirm', 'group').'<ul>';
  87         foreach($groupnames as $groupname) {
  88             $message.='<li>'.$groupname.'</li>';
  89         }
  90         $message.='</ul>';
  91     }
  92     $formcontinue = new single_button(new moodle_url('delete.php', $optionsyes), get_string('yes'), 'post');
  93     $formcancel = new single_button(new moodle_url('index.php', $optionsno), get_string('no'), 'get');
  94     echo $OUTPUT->confirm($message, $formcontinue, $formcancel);
  95     echo $OUTPUT->footer();
  96 }