/**
  * insert payment information
  *
  * @access	private
  */
 function insertPayment()
 {
     global $ilAccess, $ilObjDataCache, $ilUser;
     if (IS_PAYMENT_ENABLED && $this->payment_enabled) {
         include_once './Services/Payment/classes/class.ilPaymentObject.php';
         include_once './Services/Payment/classes/class.ilPaymentBookings.php';
         if (ilPaymentobject::_requiresPurchaseToAccess($this->ref_id)) {
             if (ilPaymentBookings::_hasAccess(ilPaymentObject::_lookupPobjectId($a_ref_id), $ilUser->getId())) {
                 // get additional information about order_date and duration
                 $order_infos = array();
                 $order_infos = ilPaymentBookings::_lookupOrder(ilPaymentObject::_lookupPobjectId($this->ref_id));
                 if (count($order_infos) > 0) {
                     global $lng;
                     $pay_lang = $lng;
                     $pay_lang->loadLanguageModule('payment');
                     $alert = true;
                     $a_newline = true;
                     $a_property = $pay_lang->txt('object_purchased_date');
                     $a_value = ilDatePresentation::formatDate(new ilDateTime($order_infos["order_date"], IL_CAL_UNIX));
                     $this->addCustomProperty($a_property, $a_value, $alert, $a_newline);
                     $alert = true;
                     $a_newline = true;
                     $a_property = $this->lng->txt('object_duration');
                     if ($order_infos['duration'] == 0) {
                         $a_value = $pay_lang->txt('unlimited_duration');
                     } else {
                         $a_value = $order_infos['duration'] . ' ' . $this->lng->txt('months');
                     }
                     $this->addCustomProperty($a_property, $a_value, $alert, $a_newline);
                 }
                 // check for extension prices
                 if (ilPaymentObject::_hasExtensions($this->ref_id)) {
                     $has_extension_prices = true;
                     $this->insertPaymentCommand($has_extension_prices);
                 }
             } else {
                 // only relevant and needed for the shop content page
                 $this->ctpl = new ilTemplate("tpl.container_list_item_commands.html", true, true, "Services/Container", "DEFAULT", false, true);
                 $this->ctpl->setCurrentBlock('payment');
                 $this->ctpl->setVariable('PAYMENT_TYPE_IMG', ilUtil::getImagePath('icon_pays.svg'));
                 $this->ctpl->setVariable('PAYMENT_ALT_IMG', $this->lng->txt('payment_system') . ': ' . $this->lng->txt('payment_buyable'));
                 $this->ctpl->parseCurrentBlock();
                 $this->insertPaymentCommand();
             }
         }
     }
 }