group/group_form.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  * A form for the creation and editing of groups.
  20  *
  21  * @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package   core_group
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die;
  27
  28 require_once($CFG->dirroot.'/lib/formslib.php');
  29
  30 /**
  31  * Group form class
  32  *
  33  * @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
  34  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35  * @package   core_group
  36  */
  37 class group_form extends moodleform {
  38
  39     /**
  40      * Definition of the form
  41      */
  42     function definition () {
  43         global $USER, $CFG, $COURSE;
  44         $coursecontext = context_course::instance($COURSE->id);
  45
  46         $mform =& $this->_form;
  47         $editoroptions = $this->_customdata['editoroptions'];
  48
  49         $mform->addElement('header', 'general', get_string('general', 'form'));
  50
  51         $mform->addElement('text','name', get_string('groupname', 'group'),'maxlength="254" size="50"');
  52         $mform->addRule('name', get_string('required'), 'required', null, 'client');
  53         $mform->setType('name', PARAM_TEXT);
  54
  55         $mform->addElement('text','idnumber', get_string('idnumbergroup'), 'maxlength="100" size="10"');
  56         $mform->addHelpButton('idnumber', 'idnumbergroup');
  57         $mform->setType('idnumber', PARAM_RAW);
  58         $mform->setAdvanced('idnumber');
  59         if (!has_capability('moodle/course:changeidnumber', $coursecontext)) {
  60             $mform->hardFreeze('idnumber');
  61         }
  62
  63         $mform->addElement('editor', 'description_editor', get_string('groupdescription', 'group'), null, $editoroptions);
  64         $mform->setType('description_editor', PARAM_RAW);
  65
  66         $mform->addElement('passwordunmask', 'enrolmentkey', get_string('enrolmentkey', 'group'), 'maxlength="254" size="24"', get_string('enrolmentkey', 'group'));
  67         $mform->addHelpButton('enrolmentkey', 'enrolmentkey', 'group');
  68         $mform->setType('enrolmentkey', PARAM_RAW);
  69
  70         $options = array(get_string('no'), get_string('yes'));
  71         $mform->addElement('select', 'hidepicture', get_string('hidepicture'), $options);
  72
  73         $mform->addElement('filepicker', 'imagefile', get_string('newpicture', 'group'));
  74         $mform->addHelpButton('imagefile', 'newpicture', 'group');
  75
  76         $mform->addElement('hidden','id');
  77         $mform->setType('id', PARAM_INT);
  78
  79         $mform->addElement('hidden','courseid');
  80         $mform->setType('courseid', PARAM_INT);
  81
  82         $this->add_action_buttons();
  83     }
  84
  85     /**
  86      * Form validation
  87      *
  88      * @param array $data
  89      * @param array $files
  90      * @return array $errors An array of errors
  91      */
  92     function validation($data, $files) {
  93         global $COURSE, $DB, $CFG;
  94
  95         $errors = parent::validation($data, $files);
  96
  97         $name = trim($data['name']);
  98         if (isset($data['idnumber'])) {
  99             $idnumber = trim($data['idnumber']);
 100         } else {
 101             $idnumber = '';
 102         }
 103         if ($data['id'] and $group = $DB->get_record('groups', array('id'=>$data['id']))) {
 104             if (textlib::strtolower($group->name) != textlib::strtolower($name)) {
 105                 if (groups_get_group_by_name($COURSE->id,  $name)) {
 106                     $errors['name'] = get_string('groupnameexists', 'group', $name);
 107                 }
 108             }
 109             if (!empty($idnumber) && $group->idnumber != $idnumber) {
 110                 if (groups_get_group_by_idnumber($COURSE->id, $idnumber)) {
 111                     $errors['idnumber']= get_string('idnumbertaken');
 112                 }
 113             }
 114
 115             if (!empty($CFG->groupenrolmentkeypolicy) and $data['enrolmentkey'] != '' and $group->enrolmentkey !== $data['enrolmentkey']) {
 116                 // enforce password policy only if changing password
 117                 $errmsg = '';
 118                 if (!check_password_policy($data['enrolmentkey'], $errmsg)) {
 119                     $errors['enrolmentkey'] = $errmsg;
 120                 }
 121             }
 122
 123         } else if (groups_get_group_by_name($COURSE->id, $name)) {
 124             $errors['name'] = get_string('groupnameexists', 'group', $name);
 125         } else if (!empty($idnumber) && groups_get_group_by_idnumber($COURSE->id, $idnumber)) {
 126             $errors['idnumber']= get_string('idnumbertaken');
 127         }
 128
 129         return $errors;
 130     }
 131
 132     /**
 133      * Get editor options for this form
 134      *
 135      * @return array An array of options
 136      */
 137     function get_editor_options() {
 138         return $this->_customdata['editoroptions'];
 139     }
 140 }