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   1  <?php
   2  
   3  require_once('../config.php');
   4  require_once ('lib.php');
   5  
   6  $action = optional_param('action', '', PARAM_ALPHA);
   7  $id = optional_param('id', 0, PARAM_INT);
   8  $tag = optional_param('tag', '', PARAM_TAG);
   9  
  10  require_login();
  11  
  12  if (empty($CFG->usetags)) {
  13      print_error('tagdisabled');
  14  }
  15  
  16  if (isguestuser()) {
  17      print_error('noguest');
  18  }
  19  
  20  if (!confirm_sesskey()) {
  21      print_error('sesskey');
  22  }
  23  
  24  $usercontext = context_user::instance($USER->id);
  25  
  26  switch ($action) {
  27      case 'addinterest':
  28          if (empty($tag) && $id) { // for backward-compatibility (people saving bookmarks, mostly..)
  29              $tag = tag_get_name($id);
  30          }
  31  
  32          tag_set_add('user', $USER->id, $tag, 'core', $usercontext->id);
  33  
  34          redirect($CFG->wwwroot.'/tag/index.php?tag='. rawurlencode($tag));
  35          break;
  36  
  37      case 'removeinterest':
  38          if (empty($tag) && $id) { // for backward-compatibility (people saving bookmarks, mostly..)
  39              $tag = tag_get_name($id);
  40          }
  41  
  42          tag_set_delete('user', $USER->id, $tag, 'core', $usercontext->id);
  43  
  44          redirect($CFG->wwwroot.'/tag/index.php?tag='. rawurlencode($tag));
  45          break;
  46  
  47      case 'flaginappropriate':
  48  
  49          $tagid = tag_get_id($tag);
  50  
  51          tag_set_flag($tagid);
  52  
  53          redirect($CFG->wwwroot.'/tag/index.php?tag='. rawurlencode($tag), get_string('responsiblewillbenotified', 'tag'));
  54          break;
  55  
  56      default:
  57          print_error('unknowaction');
  58          break;
  59  }