group/grouping_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 creating and editing groupings.
  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 if (!defined('MOODLE_INTERNAL')) {
  27     die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
  28 }
  29
  30 require_once($CFG->dirroot.'/lib/formslib.php');
  31
  32 /**
  33  * Grouping form class
  34  *
  35  * @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
  36  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37  * @package   core_group
  38  */
  39 class grouping_form extends moodleform {
  40
  41     /**
  42      * Form definition
  43      */
  44     function definition () {
  45         global $USER, $CFG, $COURSE;
  46         $coursecontext = context_course::instance($COURSE->id);
  47
  48         $mform =& $this->_form;
  49         $editoroptions = $this->_customdata['editoroptions'];
  50
  51         $mform->addElement('header', 'general', get_string('general', 'form'));
  52
  53         $mform->addElement('text','name', get_string('groupingname', 'group'),'maxlength="254" size="50"');
  54         $mform->addRule('name', get_string('required'), 'required', null, 'server');
  55         $mform->setType('name', PARAM_TEXT);
  56
  57         $mform->addElement('text','idnumber', get_string('idnumbergrouping'), 'maxlength="100" size="10"');
  58         $mform->addHelpButton('idnumber', 'idnumbergrouping');
  59         $mform->setType('idnumber', PARAM_RAW);
  60         if (!has_capability('moodle/course:changeidnumber', $coursecontext)) {
  61             $mform->hardFreeze('idnumber');
  62         }
  63
  64         $mform->addElement('editor', 'description_editor', get_string('groupingdescription', 'group'), null, $editoroptions);
  65         $mform->setType('description_editor', PARAM_RAW);
  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 $errors An array of validataion errors for the form.
  82      */
  83     function validation($data, $files) {
  84         global $COURSE, $DB;
  85
  86         $errors = parent::validation($data, $files);
  87
  88         $name = trim($data['name']);
  89         if (isset($data['idnumber'])) {
  90             $idnumber = trim($data['idnumber']);
  91         } else {
  92             $idnumber = '';
  93         }
  94         if ($data['id'] and $grouping = $DB->get_record('groupings', array('id'=>$data['id']))) {
  95             if (core_text::strtolower($grouping->name) != core_text::strtolower($name)) {
  96                 if (groups_get_grouping_by_name($COURSE->id,  $name)) {
  97                     $errors['name'] = get_string('groupingnameexists', 'group', $name);
  98                 }
  99             }
 100             if (!empty($idnumber) && $grouping->idnumber != $idnumber) {
 101                 if (groups_get_grouping_by_idnumber($COURSE->id, $idnumber)) {
 102                     $errors['idnumber']= get_string('idnumbertaken');
 103                 }
 104             }
 105
 106         } else if (groups_get_grouping_by_name($COURSE->id, $name)) {
 107             $errors['name'] = get_string('groupingnameexists', 'group', $name);
 108         } else if (!empty($idnumber) && groups_get_grouping_by_idnumber($COURSE->id, $idnumber)) {
 109             $errors['idnumber']= get_string('idnumbertaken');
 110         }
 111
 112         return $errors;
 113     }
 114
 115 }