一些功能

app/admin/controller/setting/SystemAdmin.php

@@ -187,7 +187,7 @@ class SystemAdmin extends AuthController
         if (!$id)
             return Json::fail('解绑失败!');
         $ids = User::where('admin_id', $id)->column('uid');
-        $res = User::where('admin_id', $id)->update('admin_id', null);
+        $res = User::where('admin_id', $id)->update(['admin_id' => null]);
         $res = $res && SystemStoreStaff::where('uid', 'in', $ids)->delete();
         if ($res)
             return Json::successful('解绑成功!');