refs #16630 * isbn bug

src/AjaxHandler/GetBoss.php

@@ -167,6 +167,7 @@ class GetBoss extends \VuFind\AjaxHandler\AbstractBase
             $zdbId = $driver->tryMethod('getZdbId');
             $isbns = $driver->tryMethod('getISBNs');
             $isbns = count($isbns) > 0 ? $isbns[0] : '';
+            $results['param'] = !empty($results['param']) ? $results['param'] : $isbns;
             $isISXNZBD = (!empty($isbns) || !empty($zdbId)) ? true : false;
             $tmp = $isilCallNumber;
             unset($tmp['isils']);
@@ -180,8 +181,7 @@ class GetBoss extends \VuFind\AjaxHandler\AbstractBase
                 'isISXNZBD' => $isISXNZBD,
                 'isISIL' => $isISIL,
                 'isAddNetwork' => in_array($network, $addNetworks) ? true : false,
-                'url' => sprintf($this->config->SearchUrls->$network, ($inArray ?
-                    $results['param'] : $isbns)),
+                'url' => sprintf($this->config->SearchUrls->$network, $results['param']),
                 'callnumber' => $callnumber
             ];