更新

backend-tp8/app/model/Message.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace app\model;
+
+use think\Model;
+
+class Message extends Model
+{
+    protected $name = 'messages';
+    protected $autoWriteTimestamp = 'created_at';
+    protected $createTime = 'created_at';
+    protected $updateTime = false;
+
+    protected $type = [
+        'attachments' => 'json',
+    ];
+}