返回首字母大写

app/Http/Controllers/API/ContainerController.php

@@ -59,7 +59,7 @@ class ContainerController extends Controller
             $container->itemCount =$foldsCount->get($container->id, 0)+$fileCount->get($container->id, 0);
             $container->type = 'Container';
             $container->approval_status = ucwords($container->approval_status);
-            $container->uniId = $container->type . '_' . $container->id;
+            $container->uniId = strtolower($container->type) . '_' . $container->id;
             return $container;
         });