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
  45         $mform =& $this->_form;
  46         $editoroptions = $this->_customdata['editoroptions'];
  47
  48         $mform->addElement('text','name', get_string('groupname', 'group'),'maxlength="254" size="50"');
  49         $mform->addRule('name', get_string('required'), 'required', null, 'client');
  50         $mform->setType('name', PARAM_MULTILANG);
  51
  52         $mform->addElement('editor', 'description_editor', get_string('groupdescription', 'group'), null, $editoroptions);
  53         $mform->setType('description_editor', PARAM_RAW);
  54
  55         $mform->addElement('passwordunmask', 'enrolmentkey', get_string('enrolmentkey', 'group'), 'maxlength="254" size="24"', get_string('enrolmentkey', 'group'));
  56         $mform->addHelpButton('enrolmentkey', 'enrolmentkey', 'group');
  57         $mform->setType('enrolmentkey', PARAM_RAW);
  58
  59         if (!empty($CFG->gdversion)) {
  60             $options = array(get_string('no'), get_string('yes'));
  61             $mform->addElement('select', 'hidepicture', get_string('hidepicture'), $options);
  62
  63             $mform->addElement('filepicker', 'imagefile', get_string('newpicture', 'group'));
  64             $mform->addHelpButton('imagefile', 'newpicture', 'group');
  65         }
  66
  67         $mform->addElement('hidden','id');
  68         $mform->setType('id', PARAM_INT);
  69
  70         $mform->addElement('hidden','courseid');
  71         $mform->setType('courseid', PARAM_INT);
  72
  73         $this->add_action_buttons();
  74     }
  75
  76     /**
  77      * Form validation
  78      *
  79      * @param array $data
  80      * @param array $files
  81      * @return array $errors An array of errors
  82      */
  83     function validation($data, $files) {
  84         global $COURSE, $DB, $CFG;
  85
  86         $errors = parent::validation($data, $files);
  87
  88         $name = trim($data['name']);
  89         if ($data['id'] and $group = $DB->get_record('groups', array('id'=>$data['id']))) {
  90             if (textlib::strtolower($group->name) != textlib::strtolower($name)) {
  91                 if (groups_get_group_by_name($COURSE->id,  $name)) {
  92                     $errors['name'] = get_string('groupnameexists', 'group', $name);
  93                 }
  94             }
  95
  96             if (!empty($CFG->groupenrolmentkeypolicy) and $data['enrolmentkey'] != '' and $group->enrolmentkey !== $data['enrolmentkey']) {
  97                 // enforce password policy only if changing password
  98                 $errmsg = '';
  99                 if (!check_password_policy($data['enrolmentkey'], $errmsg)) {
 100                     $errors['enrolmentkey'] = $errmsg;
 101                 }
 102             }
 103
 104         } else if (groups_get_group_by_name($COURSE->id, $name)) {
 105             $errors['name'] = get_string('groupnameexists', 'group', $name);
 106         }
 107
 108         return $errors;
 109     }
 110
 111     /**
 112      * Get editor options for this form
 113      *
 114      * @return array An array of options
 115      */
 116     function get_editor_options() {
 117         return $this->_customdata['editoroptions'];
 118     }
 119 }