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   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  }