CommonDBTM::canUpdateItem PHP Method

    function canUpdateItem()
    {
        if (!$this->checkEntity()) {
            return false;
        }
        return true;
    }

 /**
  * \brief Show names for an item from its form
  * Beware that the rendering can be different if readden from direct item form (ie : add new
  * NetworkName, remove, ...) or if readden from item of the item (for instance from the computer
  * form through NetworkPort::ShowForItem).
  *
  * @param $item                     CommonGLPI object
  * @param $withtemplate   integer   withtemplate param (default 0)
  **/
 static function showForItem(CommonDBTM $item, $withtemplate = 0)
 {
     global $DB, $CFG_GLPI;
     $ID = $item->getID();
     if (!$item->can($ID, READ)) {
         return false;
     }
     $rand = mt_rand();
     if ($item->getType() == 'NetworkPort' && Session::haveRight('internet', UPDATE) && $item->canUpdateItem()) {
         $items_id = $item->getID();
         $itemtype = $item->getType();
         echo "<div class='firstbloc'>\n";
         echo "<form method='post' action='" . static::getFormURL() . "'>\n";
         echo "<table class='tab_cadre_fixe'>\n";
         echo "<tr><th colspan='4'>" . __('Add a network name') . "</th></tr>";
         echo "<tr class='tab_bg_1'><td class='right'>";
         echo "<input type='hidden' name='items_id' value='{$items_id}'>\n";
         echo "<input type='hidden' name='itemtype' value='{$itemtype}'>\n";
         _e('Not associated');
         echo "</td><td class='left'>";
         self::dropdown(array('name' => 'addressID', 'condition' => '`items_id`=0'));
         echo "</td><td class='left'>";
         echo "<input type='submit' name='assign_address' value='" . _sx('button', 'Associate') . "' class='submit'>";
         echo "</td>";
         if (static::canCreate()) {
             echo "<td class='right' width='30%'>";
             echo "<a href=\"" . static::getFormURL() . "?items_id={$items_id}&amp;itemtype={$itemtype}\">";
             echo __('Create a new network name') . "</a>";
             echo "</td>";
         }
         echo "</tr>\n";
         echo "</table>\n";
         Html::closeForm();
         echo "</div>\n";
     }
     $table_options = array('createRow' => true);
     if ($item->getType() == 'FQDN' || $item->getType() == 'NetworkEquipment') {
         if (isset($_GET["start"])) {
             $start = $_GET["start"];
         } else {
             $start = 0;
         }
         if (!empty($_GET["order"])) {
             $table_options['order'] = $_GET["order"];
         } else {
             $table_options['order'] = 'name';
         }
         if ($item->getType() == 'FQDN') {
             $table_options['column_links'] = array('NetworkName' => 'javascript:reloadTab("order=name");', 'NetworkAlias' => 'javascript:reloadTab("order=alias");', 'IPAddress' => 'javascript:reloadTab("order=ip");');
         }
         $table_options['SQL_options'] = "LIMIT " . $_SESSION['glpilist_limit'] . "\n                                           OFFSET {$start}";
         $canedit = false;
     } else {
         $canedit = Session::haveRight('internet', UPDATE) && $item->canUpdateItem();
     }
     $table_options['canedit'] = false;
     $table_options['rand'] = $rand;
     $table_options['massiveactionnetworkname'] = $canedit;
     $table = new HTMLTableMain();
     $column = $table->addHeader('Internet', self::getTypeName(Session::getPluralNumber()));
     $t_group = $table->createGroup('Main', '');
     self::getHTMLTableHeader(__CLASS__, $t_group, $column, NULL, $table_options);
     $t_row = $t_group->createRow();
     self::getHTMLTableCellsForItem($t_row, $item, NULL, $table_options);
     if ($table->getNumberOfRows() > 0) {
         $number = $table->getNumberOfRows();
         if ($item->getType() == 'FQDN') {
             $number = min($_SESSION['glpilist_limit'], $table->getNumberOfRows());
             Html::printAjaxPager(self::getTypeName(Session::getPluralNumber()), $start, self::countForItem($item));
         }
         Session::initNavigateListItems(__CLASS__, sprintf(__('%1$s = %2$s'), $item->getTypeName(1), $item->getName()));
         if ($canedit && $number) {
             Html::openMassiveActionsForm('mass' . __CLASS__ . $rand);
             $massiveactionparams = array('num_displayed' => $number, 'container' => 'mass' . __CLASS__ . $rand);
             Html::showMassiveActions($massiveactionparams);
         }
         $table->display(array('display_title_for_each_group' => false, 'display_thead' => false, 'display_tfoot' => false, 'display_header_on_foot_for_each_group' => true));
         if ($canedit && $number) {
             $massiveactionparams['ontop'] = false;
             Html::showMassiveActions($massiveactionparams);
             Html::closeForm();
         }
         if ($item->getType() == 'FQDN') {
             Html::printAjaxPager(self::getTypeName(Session::getPluralNumber()), $start, self::countForItem($item));
         }
     } else {
         echo "<table class='tab_cadre_fixe'><tr><th>" . __('No network name found') . "</th></tr>";
         echo "</table>";
     }
 }