diff --git a/app/common/logic/approve/ApproveLogic.php b/app/common/logic/approve/ApproveLogic.php
index 767bcca85..ca34c4966 100644
--- a/app/common/logic/approve/ApproveLogic.php
+++ b/app/common/logic/approve/ApproveLogic.php
@@ -54,6 +54,8 @@ class ApproveLogic extends BaseLogic
 
     public static function detail($id)
     {
-        return Approve::find($id);
+        return Approve::withAttr('extend', function ($value, $data) {
+            return json_decode($data['extend'], true);
+        })->find($id);
     }
 }
\ No newline at end of file