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 $tag_name = optional_param('tag', '', PARAM_TAG);
  31
  32 require_login();
  33
  34 if (empty($CFG->usetags)) {
  35     print_error('tagsaredisabled', 'tag');
  36 }
  37
  38 //Editing a tag requires moodle/tag:edit capability
  39 $systemcontext   = get_context_instance(CONTEXT_SYSTEM);
  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 $PAGE->requires->yui2_lib('connection');
  59 $PAGE->requires->yui2_lib('animation');
  60 $PAGE->requires->yui2_lib('datasource');
  61 $PAGE->requires->yui2_lib('autocomplete');
  62
  63 $tagname = tag_display_name($tag);
  64
  65 // set the relatedtags field of the $tag object that will be passed to the form
  66 $tag->relatedtags = tag_get_related_tags_csv(tag_get_related_tags($tag->id, TAG_RELATED_MANUAL), TAG_RETURN_TEXT);
  67
  68 if (can_use_html_editor()) {
  69     $options = new stdClass();
  70     $options->smiley = false;
  71     $options->filter = false;
  72
  73     // convert and remove any XSS
  74     $tag->description       = format_text($tag->description, $tag->descriptionformat, $options);
  75     $tag->descriptionformat = FORMAT_HTML;
  76 }
  77
  78 $errorstring = '';
  79
  80 $editoroptions = array(
  81     'maxfiles'  => EDITOR_UNLIMITED_FILES,
  82     'maxbytes'  => $CFG->maxbytes,
  83     'trusttext' => false,
  84     'context'   => $systemcontext
  85 );
  86 $tag = file_prepare_standard_editor($tag, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
  87
  88 $tagform = new tag_edit_form(null, compact('editoroptions'));
  89 if ( $tag->tagtype == 'official' ) {
  90     $tag->tagtype = '1';
  91 } else {
  92     $tag->tagtype = '0';
  93 }
  94
  95 $tagform->set_data($tag);
  96
  97 // If new data has been sent, update the tag record
  98 if ($tagnew = $tagform->get_data()) {
  99
 100     if (has_capability('moodle/tag:manage', $systemcontext)) {
 101         if (($tag->tagtype != 'default') && (!isset($tagnew->tagtype) || ($tagnew->tagtype != '1'))) {
 102             tag_type_set($tag->id, 'default');
 103
 104         } elseif (($tag->tagtype != 'official') && ($tagnew->tagtype == '1')) {
 105             tag_type_set($tag->id, 'official');
 106         }
 107     }
 108
 109     if (!has_capability('moodle/tag:manage', $systemcontext) && !has_capability('moodle/tag:edit', $systemcontext)) {
 110         unset($tagnew->name);
 111         unset($tagnew->rawname);
 112
 113     } else {  // They might be trying to change the rawname, make sure it's a change that doesn't affect name
 114         $norm = tag_normalize($tagnew->rawname, TAG_CASE_LOWER);
 115         $tagnew->name = array_shift($norm);
 116
 117         if ($tag->name != $tagnew->name) {  // The name has changed, let's make sure it's not another existing tag
 118             if (tag_get_id($tagnew->name)) {   // Something exists already, so flag an error
 119                 $errorstring = s($tagnew->rawname).': '.get_string('namesalreadybeeingused', 'tag');
 120             }
 121         }
 122     }
 123
 124     if (empty($errorstring)) {    // All is OK, let's save it
 125
 126         $tagnew = file_postupdate_standard_editor($tagnew, 'description', $editoroptions, $systemcontext, 'tag', 'description', $tag->id);
 127
 128         tag_description_set($tag_id, $tagnew->description, $tagnew->descriptionformat);
 129
 130         $tagnew->timemodified = time();
 131
 132         if (has_capability('moodle/tag:manage', $systemcontext)) {
 133             // rename tag
 134             if(!tag_rename($tag->id, $tagnew->rawname)) {
 135                 print_error('errorupdatingrecord', 'tag');
 136             }
 137         }
 138
 139         //log tag changes activity
 140         //if tag name exist from form, renaming is allow.  record log action as rename
 141         //otherwise, record log action as update
 142         if (isset($tagnew->name) && ($tag->name != $tagnew->name)){
 143             add_to_log($COURSE->id, 'tag', 'update', 'index.php?id='. $tag->id, $tag->name . '->'. $tagnew->name);
 144
 145         } elseif ($tag->description != $tagnew->description) {
 146             add_to_log($COURSE->id, 'tag', 'update', 'index.php?id='. $tag->id, $tag->name);
 147         }
 148
 149         //updated related tags
 150         tag_set('tag', $tagnew->id, explode(',', trim($tagnew->relatedtags)));
 151         //print_object($tagnew); die();
 152
 153         redirect($CFG->wwwroot.'/tag/index.php?tag='.rawurlencode($tag->name)); // must use $tag here, as the name isn't in the edit form
 154     }
 155 }
 156
 157 $PAGE->navbar->add(get_string('tags', 'tag'), new moodle_url('/tag/search.php'));
 158 $PAGE->navbar->add($tagname);
 159 $PAGE->navbar->add(get_string('edit'));
 160 $PAGE->set_title(get_string('tag', 'tag') . ' - '. $tagname);
 161 $PAGE->set_heading($COURSE->fullname);
 162 echo $OUTPUT->header();
 163 echo $OUTPUT->heading($tagname, 2);
 164
 165 if (!empty($errorstring)) {
 166     echo $OUTPUT->notification($errorstring);
 167 }
 168
 169 $tagform->display();
 170
 171 if (ajaxenabled()) {
 172     $PAGE->requires->js('/tag/tag.js');
 173     $PAGE->requires->js_function_call('init_tag_autocomplete', null, true);
 174 }
 175 echo $OUTPUT->footer();