tag/edit.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 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 $returnurl = optional_param('returnurl', '', PARAM_LOCALURL);
  32
  33 require_login();
  34
  35 if (empty($CFG->usetags)) {
  36     print_error('tagsaredisabled', 'tag');
  37 }
  38
  39 //Editing a tag requires moodle/tag:edit capability
  40 $systemcontext   = context_system::instance();
  41 require_capability('moodle/tag:edit', $systemcontext);
  42
  43 if ($tag_name) {
  44     $tag = tag_get('name', $tag_name, '*');
  45 } else if ($tag_id) {
  46     $tag = tag_get('id', $tag_id, '*');
  47 }
  48
  49 if (empty($tag)) {
  50     redirect($CFG->wwwroot.'/tag/search.php');
  51 }
  52
  53 $PAGE->set_url('/tag/index.php', array('id' => $tag->id));
  54 $PAGE->set_subpage($tag->id);
  55 $PAGE->set_context($systemcontext);
  56 $PAGE->set_blocks_editing_capability('moodle/tag:editblocks');
  57 $PAGE->set_pagelayout('standard');
  58
  59 $tagname = tag_display_name($tag);
  60
  61 // set the relatedtags field of the $tag object that will be passed to the form
  62 $tag->relatedtags = tag_get_related_tags_csv(tag_get_related_tags($tag->id, TAG_RELATED_MANUAL), TAG_RETURN_TEXT);
  63
  64 $options = new stdClass();
  65 $options->smiley = false;
  66 $options->filter = false;
  67
  68 // convert and remove any XSS
  69 $tag->description       = format_text($tag->description, $tag->descriptionformat, $options);
  70 $tag->descriptionformat = FORMAT_HTML;
  71
  72 $errorstring = '';
  73
  74 $editoroptions = array(
  75     'maxfiles'  => EDITOR_UNLIMITED_FILES,
  76     'maxbytes'  => $CFG->maxbytes,
  77     'trusttext' => false,
  78     'context'   => $systemcontext,
  79     'subdirs'   => file_area_contains_subdirs($systemcontext, 'tag', 'description', $tag->id),
  80 );
  81 $tag = file_prepare_standard_editor($tag, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
  82
  83 $tagform = new tag_edit_form(null, compact('editoroptions'));
  84 if ( $tag->tagtype == 'official' ) {
  85     $tag->tagtype = '1';
  86 } else {
  87     $tag->tagtype = '0';
  88 }
  89
  90 $tag->returnurl = $returnurl;
  91 $tagform->set_data($tag);
  92
  93 // If new data has been sent, update the tag record
  94 if ($tagform->is_cancelled()) {
  95     redirect($returnurl ? new moodle_url($returnurl) :
  96         new moodle_url('/tag/index.php', array('tag' => $tag->name)));
  97 } else if ($tagnew = $tagform->get_data()) {
  98
  99     if (has_capability('moodle/tag:manage', $systemcontext)) {
 100         if (($tag->tagtype != 'default') && (!isset($tagnew->tagtype) || ($tagnew->tagtype != '1'))) {
 101             tag_type_set($tag->id, 'default');
 102
 103         } elseif (($tag->tagtype != 'official') && ($tagnew->tagtype == '1')) {
 104             tag_type_set($tag->id, 'official');
 105         }
 106     }
 107
 108     if (!has_capability('moodle/tag:manage', $systemcontext)) {
 109         unset($tagnew->name);
 110         unset($tagnew->rawname);
 111
 112     } else {  // They might be trying to change the rawname, make sure it's a change that doesn't affect name
 113         $norm = tag_normalize($tagnew->rawname, TAG_CASE_LOWER);
 114         $tagnew->name = array_shift($norm);
 115
 116         if ($tag->rawname !== $tagnew->rawname) {  // The name has changed, let's make sure it's not another existing tag
 117             if (($id = tag_get_id($tagnew->name)) && $id != $tag->id) { // Something exists already, so flag an error.
 118                 $errorstring = s($tagnew->rawname).': '.get_string('namesalreadybeeingused', 'tag');
 119             }
 120         }
 121     }
 122
 123     if (empty($errorstring)) {    // All is OK, let's save it
 124
 125         $tagnew = file_postupdate_standard_editor($tagnew, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
 126
 127         if ($tag->description != $tagnew->description) {
 128             tag_description_set($tag_id, $tagnew->description, $tagnew->descriptionformat);
 129         }
 130
 131         $tagnew->timemodified = time();
 132
 133         if (has_capability('moodle/tag:manage', $systemcontext)) {
 134             // Check if we need to rename the tag.
 135             if (isset($tagnew->name) && ($tag->rawname != $tagnew->rawname)) {
 136                 // Rename the tag.
 137                 if (!tag_rename($tag->id, $tagnew->rawname)) {
 138                     print_error('errorupdatingrecord', 'tag');
 139                 }
 140             }
 141         }
 142
 143         //updated related tags
 144         tag_set('tag', $tagnew->id, explode(',', trim($tagnew->relatedtags)), 'core', $systemcontext->id);
 145         //print_object($tagnew); die();
 146
 147         $tagname = isset($tagnew->rawname) ? $tagnew->rawname : $tag->rawname;
 148         redirect($returnurl ? new moodle_url($returnurl) :
 149             new moodle_url('/tag/index.php', array('tag' => $tagname)));
 150     }
 151 }
 152
 153 navigation_node::override_active_url(new moodle_url('/tag/search.php'));
 154 $PAGE->navbar->add($tagname);
 155 $PAGE->navbar->add(get_string('edit'));
 156 $PAGE->set_title(get_string('tag', 'tag') . ' - '. $tagname);
 157 $PAGE->set_heading($COURSE->fullname);
 158 echo $OUTPUT->header();
 159 echo $OUTPUT->heading($tagname, 2);
 160
 161 if (!empty($errorstring)) {
 162     echo $OUTPUT->notification($errorstring);
 163 }
 164
 165 $tagform->display();
 166
 167 $PAGE->requires->js('/tag/tag.js');
 168 $PAGE->requires->js_function_call('init_tag_autocomplete', null, true);
 169
 170 echo $OUTPUT->footer();