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
  18 /**
  19  * @package    core_tag
  20  * @category   tag
  21  * @copyright  2007 Luiz Cruz <luiz.laydner@gmail.com>
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 if (!defined('MOODLE_INTERNAL')) {
  26     die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
  27 }
  28
  29 require_once($CFG->dirroot.'/lib/formslib.php');
  30
  31 /**
  32  * Defines the form for editing tags
  33  *
  34  * @package    core_tag
  35  * @category   tag
  36  * @copyright  2007 Luiz Cruz <luiz.laydner@gmail.com>
  37  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38  */
  39 class tag_edit_form extends moodleform {
  40
  41     /**
  42      * Overrides the abstract moodleform::definition method for defining what the form that is to be
  43      * presented to the user.
  44      */
  45     function definition() {
  46
  47         $mform =& $this->_form;
  48
  49         $mform->addElement('header', 'tag', get_string('description','tag'));
  50
  51         $mform->addElement('hidden', 'id');
  52         $mform->setType('id', PARAM_INT);
  53
  54         $mform->addElement('hidden', 'returnurl');
  55         $mform->setType('returnurl', PARAM_LOCALURL);
  56
  57         $systemcontext   = context_system::instance();
  58
  59         if (has_capability('moodle/tag:manage', $systemcontext)) {
  60             $mform->addElement('text', 'rawname', get_string('name', 'tag'),
  61                     'maxlength="'.TAG_MAX_LENGTH.'" size="'.TAG_MAX_LENGTH.'"');
  62             $mform->setType('rawname', PARAM_TAG);
  63         }
  64
  65         $mform->addElement('editor', 'description_editor', get_string('description', 'tag'), null, $this->_customdata['editoroptions']);
  66
  67         if (has_capability('moodle/tag:manage', $systemcontext)) {
  68             $mform->addElement('checkbox', 'isstandard', get_string('standardtag', 'tag'));
  69         }
  70
  71         $mform->addElement('tags', 'relatedtags', get_string('relatedtags', 'tag'),
  72                 array('tagcollid' => $this->_customdata['tag']->tagcollid));
  73
  74         $this->add_action_buttons(true, get_string('updatetag', 'tag'));
  75
  76     }
  77
  78     /**
  79      * Custom form validation
  80      *
  81      * @param array $data
  82      * @param array $files
  83      * @return array
  84      */
  85     public function validation($data, $files) {
  86         $errors = parent::validation($data, $files);
  87
  88         if (isset($data['rawname'])) {
  89             $newname = core_text::strtolower($data['rawname']);
  90             $tag = $this->_customdata['tag'];
  91             if ($tag->name != $newname) {
  92                 // The name has changed, let's make sure it's not another existing tag.
  93                 if (core_tag_tag::get_by_name($tag->tagcollid, $newname)) {
  94                     // Something exists already, so flag an error.
  95                     $errors['rawname'] = get_string('namesalreadybeeingused', 'tag');
  96                 }
  97             }
  98         }
  99
 100         return $errors;
 101     }
 102
 103 }