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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 <[email protected]>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once('../config.php');
  26  require_once ('lib.php');
  27  require_once ('edit_form.php');
  28  
  29  $tag_id = optional_param('id', 0, PARAM_INT);
  30  $tag_name = optional_param('tag', '', PARAM_TAG);
  31  
  32  require_login();
  33  
  34  if (empty($CFG->usetags)) {
  35      print_error('tagsaredisabled', 'tag');
  36  }
  37  
  38  //Editing a tag requires moodle/tag:edit capability
  39  $systemcontext   = context_system::instance();
  40  require_capability('moodle/tag:edit', $systemcontext);
  41  
  42  if ($tag_name) {
  43      $tag = tag_get('name', $tag_name, '*');
  44  } else if ($tag_id) {
  45      $tag = tag_get('id', $tag_id, '*');
  46  }
  47  
  48  if (empty($tag)) {
  49      redirect($CFG->wwwroot.'/tag/search.php');
  50  }
  51  
  52  $PAGE->set_url('/tag/index.php', array('id' => $tag->id));
  53  $PAGE->set_subpage($tag->id);
  54  $PAGE->set_context($systemcontext);
  55  $PAGE->set_blocks_editing_capability('moodle/tag:editblocks');
  56  $PAGE->set_pagelayout('base');
  57  
  58  $tagname = tag_display_name($tag);
  59  
  60  // set the relatedtags field of the $tag object that will be passed to the form
  61  $tag->relatedtags = tag_get_related_tags_csv(tag_get_related_tags($tag->id, TAG_RELATED_MANUAL), TAG_RETURN_TEXT);
  62  
  63  $options = new stdClass();
  64  $options->smiley = false;
  65  $options->filter = false;
  66  
  67  // convert and remove any XSS
  68  $tag->description       = format_text($tag->description, $tag->descriptionformat, $options);
  69  $tag->descriptionformat = FORMAT_HTML;
  70  
  71  $errorstring = '';
  72  
  73  $editoroptions = array(
  74      'maxfiles'  => EDITOR_UNLIMITED_FILES,
  75      'maxbytes'  => $CFG->maxbytes,
  76      'trusttext' => false,
  77      'context'   => $systemcontext,
  78      'subdirs'   => file_area_contains_subdirs($systemcontext, 'tag', 'description', $tag->id),
  79  );
  80  $tag = file_prepare_standard_editor($tag, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
  81  
  82  $tagform = new tag_edit_form(null, compact('editoroptions'));
  83  if ( $tag->tagtype == 'official' ) {
  84      $tag->tagtype = '1';
  85  } else {
  86      $tag->tagtype = '0';
  87  }
  88  
  89  $tagform->set_data($tag);
  90  
  91  // If new data has been sent, update the tag record
  92  if ($tagnew = $tagform->get_data()) {
  93  
  94      if (has_capability('moodle/tag:manage', $systemcontext)) {
  95          if (($tag->tagtype != 'default') && (!isset($tagnew->tagtype) || ($tagnew->tagtype != '1'))) {
  96              tag_type_set($tag->id, 'default');
  97  
  98          } elseif (($tag->tagtype != 'official') && ($tagnew->tagtype == '1')) {
  99              tag_type_set($tag->id, 'official');
 100          }
 101      }
 102  
 103      if (!has_capability('moodle/tag:manage', $systemcontext)) {
 104          unset($tagnew->name);
 105          unset($tagnew->rawname);
 106  
 107      } else {  // They might be trying to change the rawname, make sure it's a change that doesn't affect name
 108          $norm = tag_normalize($tagnew->rawname, TAG_CASE_LOWER);
 109          $tagnew->name = array_shift($norm);
 110  
 111          if ($tag->name != $tagnew->name) {  // The name has changed, let's make sure it's not another existing tag
 112              if (tag_get_id($tagnew->name)) {   // Something exists already, so flag an error
 113                  $errorstring = s($tagnew->rawname).': '.get_string('namesalreadybeeingused', 'tag');
 114              }
 115          }
 116      }
 117  
 118      if (empty($errorstring)) {    // All is OK, let's save it
 119  
 120          $tagnew = file_postupdate_standard_editor($tagnew, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
 121  
 122          if ($tag->description != $tagnew->description) {
 123              tag_description_set($tag_id, $tagnew->description, $tagnew->descriptionformat);
 124          }
 125  
 126          $tagnew->timemodified = time();
 127  
 128          if (has_capability('moodle/tag:manage', $systemcontext)) {
 129              // Check if we need to rename the tag.
 130              if (isset($tagnew->name) && ($tag->name != $tagnew->name)) {
 131                  // Rename the tag.
 132                  if (!tag_rename($tag->id, $tagnew->rawname)) {
 133                      print_error('errorupdatingrecord', 'tag');
 134                  }
 135              }
 136          }
 137  
 138          //updated related tags
 139          tag_set('tag', $tagnew->id, explode(',', trim($tagnew->relatedtags)), 'core', $systemcontext->id);
 140          //print_object($tagnew); die();
 141  
 142          redirect($CFG->wwwroot.'/tag/index.php?tag='.rawurlencode($tag->name)); // must use $tag here, as the name isn't in the edit form
 143      }
 144  }
 145  
 146  $PAGE->navbar->add(get_string('tags', 'tag'), new moodle_url('/tag/search.php'));
 147  $PAGE->navbar->add($tagname);
 148  $PAGE->navbar->add(get_string('edit'));
 149  $PAGE->set_title(get_string('tag', 'tag') . ' - '. $tagname);
 150  $PAGE->set_heading($COURSE->fullname);
 151  echo $OUTPUT->header();
 152  echo $OUTPUT->heading($tagname, 2);
 153  
 154  if (!empty($errorstring)) {
 155      echo $OUTPUT->notification($errorstring);
 156  }
 157  
 158  $tagform->display();
 159  
 160  $PAGE->requires->js('/tag/tag.js');
 161  $PAGE->requires->js_function_call('init_tag_autocomplete', null, true);
 162  
 163  echo $OUTPUT->footer();