tag/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 if (!defined('MOODLE_INTERNAL')) {
  18     die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
  19 }
  20
  21 require_once($CFG->dirroot.'/lib/formslib.php');
  22
  23 /**
  24  * Defines the form for editing tags
  25  *
  26  * @package    core_tag
  27  * @category   tag
  28  * @copyright  2007 Luiz Cruz <luiz.laydner@gmail.com>
  29  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  30  */
  31 class tag_edit_form extends moodleform {
  32
  33     /**
  34      * Overrides the abstract moodleform::definition method for defining what the form that is to be
  35      * presented to the user.
  36      */
  37     function definition() {
  38
  39         $mform =& $this->_form;
  40
  41         $mform->addElement('header', 'tag', get_string('description','tag'));
  42
  43         $mform->addElement('hidden', 'id');
  44         $mform->setType('id', PARAM_INT);
  45
  46         $mform->addElement('hidden', 'returnurl');
  47         $mform->setType('returnurl', PARAM_LOCALURL);
  48
  49         $systemcontext   = context_system::instance();
  50
  51         if (has_capability('moodle/tag:manage', $systemcontext)) {
  52             $mform->addElement('text', 'rawname', get_string('name', 'tag'), ['maxlength' => TAG_MAX_LENGTH, 'size' => 50]);
  53             $mform->setType('rawname', PARAM_TAG);
  54         }
  55
  56         $mform->addElement('editor', 'description_editor', get_string('description', 'tag'), null, $this->_customdata['editoroptions']);
  57
  58         if (has_capability('moodle/tag:manage', $systemcontext)) {
  59             $mform->addElement('checkbox', 'isstandard', get_string('standardtag', 'tag'));
  60         }
  61
  62         $mform->addElement('tags', 'relatedtags', get_string('relatedtags', 'tag'),
  63                 array('tagcollid' => $this->_customdata['tag']->tagcollid));
  64
  65         $this->add_action_buttons(true, get_string('updatetag', 'tag'));
  66
  67     }
  68
  69     /**
  70      * Custom form validation
  71      *
  72      * @param array $data
  73      * @param array $files
  74      * @return array
  75      */
  76     public function validation($data, $files) {
  77         $errors = parent::validation($data, $files);
  78
  79         if (isset($data['rawname'])) {
  80             $newname = core_text::strtolower($data['rawname']);
  81             $tag = $this->_customdata['tag'];
  82             if ($tag->name != $newname) {
  83                 // The name has changed, let's make sure it's not another existing tag.
  84                 if (core_tag_tag::get_by_name($tag->tagcollid, $newname)) {
  85                     // Something exists already, so flag an error.
  86                     $errors['rawname'] = get_string('namesalreadybeeingused', 'tag');
  87                 }
  88             }
  89         }
  90
  91         return $errors;
  92     }
  93
  94 }