cohort/edit_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  * Cohort related management functions, this file needs to be included manually.
  19  *
  20  * @package    core_cohort
  21  * @copyright  2010 Petr Skoda  {@link http://skodak.org}
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 require_once($CFG->dirroot . '/lib/formslib.php');
  28
  29 class cohort_edit_form extends moodleform {
  30
  31     /**
  32      * Define the cohort edit form
  33      */
  34     public function definition() {
  35
  36         $mform = $this->_form;
  37         $editoroptions = $this->_customdata['editoroptions'];
  38         $cohort = $this->_customdata['data'];
  39
  40         $mform->addElement('text', 'name', get_string('name', 'cohort'), 'maxlength="254" size="50"');
  41         $mform->addRule('name', get_string('required'), 'required', null, 'client');
  42         $mform->setType('name', PARAM_TEXT);
  43
  44         $options = $this->get_category_options($cohort->contextid);
  45         $mform->addElement('select', 'contextid', get_string('context', 'role'), $options);
  46
  47         $mform->addElement('text', 'idnumber', get_string('idnumber', 'cohort'), 'maxlength="254" size="50"');
  48         $mform->setType('idnumber', PARAM_RAW); // Idnumbers are plain text, must not be changed.
  49
  50         $mform->addElement('advcheckbox', 'visible', get_string('visible', 'cohort'));
  51         $mform->setDefault('visible', 1);
  52         $mform->addHelpButton('visible', 'visible', 'cohort');
  53
  54         $mform->addElement('editor', 'description_editor', get_string('description', 'cohort'), null, $editoroptions);
  55         $mform->setType('description_editor', PARAM_RAW);
  56
  57         $mform->addElement('hidden', 'id');
  58         $mform->setType('id', PARAM_INT);
  59
  60         if (isset($this->_customdata['returnurl'])) {
  61             $mform->addElement('hidden', 'returnurl', $this->_customdata['returnurl']->out_as_local_url());
  62             $mform->setType('returnurl', PARAM_LOCALURL);
  63         }
  64
  65         $this->add_action_buttons();
  66
  67         $this->set_data($cohort);
  68     }
  69
  70     public function validation($data, $files) {
  71         global $DB;
  72
  73         $errors = parent::validation($data, $files);
  74
  75         $idnumber = trim($data['idnumber']);
  76         if ($idnumber === '') {
  77             // Fine, empty is ok.
  78
  79         } else if ($data['id']) {
  80             $current = $DB->get_record('cohort', array('id'=>$data['id']), '*', MUST_EXIST);
  81             if ($current->idnumber !== $idnumber) {
  82                 if ($DB->record_exists('cohort', array('idnumber'=>$idnumber))) {
  83                     $errors['idnumber'] = get_string('duplicateidnumber', 'cohort');
  84                 }
  85             }
  86
  87         } else {
  88             if ($DB->record_exists('cohort', array('idnumber'=>$idnumber))) {
  89                 $errors['idnumber'] = get_string('duplicateidnumber', 'cohort');
  90             }
  91         }
  92
  93         return $errors;
  94     }
  95
  96     protected function get_category_options($currentcontextid) {
  97         global $CFG;
  98         require_once($CFG->libdir. '/coursecatlib.php');
  99         $displaylist = coursecat::make_categories_list('moodle/cohort:manage');
 100         $options = array();
 101         $syscontext = context_system::instance();
 102         if (has_capability('moodle/cohort:manage', $syscontext)) {
 103             $options[$syscontext->id] = $syscontext->get_context_name();
 104         }
 105         foreach ($displaylist as $cid=>$name) {
 106             $context = context_coursecat::instance($cid);
 107             $options[$context->id] = $name;
 108         }
 109         // Always add current - this is not likely, but if the logic gets changed it might be a problem.
 110         if (!isset($options[$currentcontextid])) {
 111             $context = context::instance_by_id($currentcontextid, MUST_EXIST);
 112             $options[$context->id] = $syscontext->get_context_name();
 113         }
 114         return $options;
 115     }
 116 }
 117