Url encoding for the route param added

framework/web/UrlManager.php

@@ -325,7 +325,7 @@ class UrlManager extends Component
 
             return "$baseUrl/{$route}{$anchor}";
         } else {
-            $url = "$baseUrl?{$this->routeParam}=$route";
+            $url = "$baseUrl?{$this->routeParam}=" . urlencode($route);
             if (!empty($params) && ($query = http_build_query($params)) !== '') {
                 $url .= '&' . $query;
             }