[notice]只有新增时写入create_by

src/controller/Broadcast.php

@@ -67,7 +67,9 @@ class Broadcast extends Controller
                 }
                 unset($vo['to']);
             }
+            if (empty($vo['id'])) {
                 $vo['create_by'] = session('user.id');
+            }
         } else {
             $this->depts = StaffDept::items();
             $this->types = NoticeBroadcast::types();