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
  47         $mform =& $this->_form;
  48         $editoroptions = $this->_customdata['editoroptions'];
  49
  50         $mform->addElement('text','name', get_string('groupingname', 'group'),'maxlength="254" size="50"');
  51         $mform->addRule('name', get_string('required'), 'required', null, 'server');
  52         $mform->setType('name', PARAM_MULTILANG);
  53
  54         $mform->addElement('editor', 'description_editor', get_string('groupingdescription', 'group'), null, $editoroptions);
  55         $mform->setType('description_editor', PARAM_RAW);
  56
  57         $mform->addElement('hidden','id');
  58         $mform->setType('id', PARAM_INT);
  59
  60         $mform->addElement('hidden', 'courseid');
  61         $mform->setType('courseid', PARAM_INT);
  62
  63         $this->add_action_buttons();
  64     }
  65
  66     /**
  67      * Form validation
  68      *
  69      * @param array $data
  70      * @param array $files
  71      * @return array $errors An array of validataion errors for the form.
  72      */
  73     function validation($data, $files) {
  74         global $COURSE, $DB;
  75
  76         $errors = parent::validation($data, $files);
  77
  78         $name = trim($data['name']);
  79         if ($data['id'] and $grouping = $DB->get_record('groupings', array('id'=>$data['id']))) {
  80             if (textlib::strtolower($grouping->name) != textlib::strtolower($name)) {
  81                 if (groups_get_grouping_by_name($COURSE->id,  $name)) {
  82                     $errors['name'] = get_string('groupingnameexists', 'group', $name);
  83                 }
  84             }
  85
  86         } else if (groups_get_grouping_by_name($COURSE->id, $name)) {
  87             $errors['name'] = get_string('groupingnameexists', 'group', $name);
  88         }
  89
  90         return $errors;
  91     }
  92
  93 }