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('editor', 'description_editor', get_string('description', 'cohort'), null, $editoroptions);
  51         $mform->setType('description_editor', PARAM_RAW);
  52
  53         $mform->addElement('hidden', 'id');
  54         $mform->setType('id', PARAM_INT);
  55
  56         if (isset($this->_customdata['returnurl'])) {
  57             $mform->addElement('hidden', 'returnurl', $this->_customdata['returnurl']->out_as_local_url());
  58             $mform->setType('returnurl', PARAM_LOCALURL);
  59         }
  60
  61         $this->add_action_buttons();
  62
  63         $this->set_data($cohort);
  64     }
  65
  66     public function validation($data, $files) {
  67         global $DB;
  68
  69         $errors = parent::validation($data, $files);
  70
  71         $idnumber = trim($data['idnumber']);
  72         if ($idnumber === '') {
  73             // Fine, empty is ok.
  74
  75         } else if ($data['id']) {
  76             $current = $DB->get_record('cohort', array('id'=>$data['id']), '*', MUST_EXIST);
  77             if ($current->idnumber !== $idnumber) {
  78                 if ($DB->record_exists('cohort', array('idnumber'=>$idnumber))) {
  79                     $errors['idnumber'] = get_string('duplicateidnumber', 'cohort');
  80                 }
  81             }
  82
  83         } else {
  84             if ($DB->record_exists('cohort', array('idnumber'=>$idnumber))) {
  85                 $errors['idnumber'] = get_string('duplicateidnumber', 'cohort');
  86             }
  87         }
  88
  89         return $errors;
  90     }
  91
  92     protected function get_category_options($currentcontextid) {
  93         global $CFG;
  94         require_once($CFG->libdir. '/coursecatlib.php');
  95         $displaylist = coursecat::make_categories_list('moodle/cohort:manage');
  96         $options = array();
  97         $syscontext = context_system::instance();
  98         if (has_capability('moodle/cohort:manage', $syscontext)) {
  99             $options[$syscontext->id] = $syscontext->get_context_name();
 100         }
 101         foreach ($displaylist as $cid=>$name) {
 102             $context = context_coursecat::instance($cid);
 103             $options[$context->id] = $name;
 104         }
 105         // Always add current - this is not likely, but if the logic gets changed it might be a problem.
 106         if (!isset($options[$currentcontextid])) {
 107             $context = context::instance_by_id($currentcontextid, MUST_EXIST);
 108             $options[$context->id] = $syscontext->get_context_name();
 109         }
 110         return $options;
 111     }
 112 }
 113