1 files changed, 8 insertions, 4 deletions
diff --git a/app/frontend/url/UrlManager.php b/app/frontend/url/UrlManager.php
index a33d98e..1310eaf 100644
--- a/app/frontend/url/UrlManager.php
+++ b/app/frontend/url/UrlManager.php
@@ -15,7 +15,9 @@ class UrlManager extends TUrlMapping {
         return rtrim(
             preg_replace(
                 '#^/' . $serviceParam . '#',
-                '/' . $this->_convertServiceParam($serviceParam),
+                '/' . $this->_convertServiceParam(
+                    TPropertyValue::ensureString($serviceParam)
+                ),
                 preg_replace('#^/' . $serviceID . '#', '', $url)
             ),
             '/'
@@ -27,7 +29,9 @@ class UrlManager extends TUrlMapping {
         if ($this->MatchingPattern) {
             $serviceID = $this->MatchingPattern->ServiceID;
             if (isset($params[$serviceID])) {
-                $params[$serviceID] = $this->_parseServiceParam($params[$serviceID]);
+                $params[$serviceID] = $this->_parseServiceParam(
+                    TPropertyValue::ensureString($params[$serviceID])
+                );
             }
         }
         return $params;
@@ -36,7 +40,7 @@ class UrlManager extends TUrlMapping {
     /**
      * Convert service param from camelCase to hyphenated-form.
      **/
-    private function _convertServiceParam($param) {
+    private function _convertServiceParam(string $param = '') {
         return implode(
             '-',
             array_map('mb_strtolower', array_filter(preg_split('/(?=[A-Z])/', $param)))
@@ -46,7 +50,7 @@ class UrlManager extends TUrlMapping {
     /**
      * Convert service param from hyphenated-form to camelCase.
      **/
-    private function _parseServiceParam($param) {
+    private function _parseServiceParam(string $param = '') {
         return implode(
             '',
             array_map('ucfirst', explode('-', $param))