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app/Http/Controllers/Controller.php

@@ -84,11 +84,13 @@ class Controller extends BaseController
      * @apiVersion 1.0.0
      */
 
+    protected $lang = 'en';
 
     public function __construct()
     {
-        $lang = isset($_REQUEST['lang']) ? $_REQUEST['lang'] : 'en';
+        $lang = request()->input('lang', 'en');
         App::setLocale($lang);
+        $this->lang = $lang;
     }
 
     protected function success($data = [], $msg = '')