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 $PAGE->set_pagelayout('standard');
  36
  37 // Make sure course is OK and user has access to manage groups
  38 if (!$course = $DB->get_record('course', array('id' => $courseid))) {
  39     throw new \moodle_exception('invalidcourseid');
  40 }
  41 require_login($course);
  42 $context = context_course::instance($course->id);
  43 require_capability('moodle/course:managegroups', $context);
  44 $changeidnumber = has_capability('moodle/course:changeidnumber', $context);
  45
  46 // Make sure all groups are OK and belong to course
  47 $groupidarray = explode(',',$groupids);
  48 $groupnames = array();
  49 foreach($groupidarray as $groupid) {
  50     if (!$group = $DB->get_record('groups', array('id' => $groupid))) {
  51         throw new \moodle_exception('invalidgroupid');
  52     }
  53     if (!empty($group->idnumber) && !$changeidnumber) {
  54         throw new \moodle_exception('grouphasidnumber', '', '', $group->name);
  55     }
  56     if ($courseid != $group->courseid) {
  57         throw new \moodle_exception('groupunknown', '', '', $group->courseid);
  58     }
  59     $groupnames[] = format_string($group->name);
  60 }
  61
  62 $returnurl='index.php?id='.$course->id;
  63
  64 if(count($groupidarray)==0) {
  65     throw new \moodle_exception('errorselectsome', 'group', $returnurl);
  66 }
  67
  68 if ($confirm && data_submitted()) {
  69     if (!confirm_sesskey() ) {
  70         throw new \moodle_exception('confirmsesskeybad', 'error', $returnurl);
  71     }
  72
  73     foreach($groupidarray as $groupid) {
  74         groups_delete_group($groupid);
  75     }
  76
  77     redirect($returnurl);
  78 } else {
  79     $PAGE->set_title(get_string('deleteselectedgroup', 'group'));
  80     $PAGE->set_heading($course->fullname . ': '. get_string('deleteselectedgroup', 'group'));
  81     echo $OUTPUT->header();
  82     $optionsyes = array('courseid'=>$courseid, 'groups'=>$groupids, 'sesskey'=>sesskey(), 'confirm'=>1);
  83     $optionsno = array('id'=>$courseid);
  84     if(count($groupnames)==1) {
  85         $message=get_string('deletegroupconfirm', 'group', $groupnames[0]);
  86     } else {
  87         $message=get_string('deletegroupsconfirm', 'group').'<ul>';
  88         foreach($groupnames as $groupname) {
  89             $message.='<li>'.$groupname.'</li>';
  90         }
  91         $message.='</ul>';
  92     }
  93     $formcontinue = new single_button(new moodle_url('delete.php', $optionsyes), get_string('yes'), 'post');
  94     $formcancel = new single_button(new moodle_url('index.php', $optionsno), get_string('no'), 'get');
  95     echo $OUTPUT->confirm($message, $formcontinue, $formcancel);
  96     echo $OUTPUT->footer();
  97 }