去掉protected $dateFormat = 'U';，统一放到BaseModel

app/Models/AgentProduct.php

@@ -7,7 +7,6 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 class AgentProduct extends BaseModel
 {
     use HasFactory;
-	protected $dateFormat = 'U';
 
     public function product()
 	{

app/Models/Article.php

@@ -7,5 +7,4 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 class Article extends BaseModel
 {
     use HasFactory;
-	protected $dateFormat = 'U';
 }

app/Models/BaseModel.php

@@ -5,15 +5,10 @@ use Illuminate\Database\Eloquent\Model;
 
 class BaseModel extends Model
 {
+	protected $dateFormat = 'U';
     # 使用空方法覆盖，不转换时间戳
-    public function getUpdatedAtColumn()
-    {
-
-    }
+    public function getUpdatedAtColumn() { }
 
     # 使用空方法覆盖，不转换时间戳
-    public function getCreatedAtColumn()
-    {
-
-    }
+    public function getCreatedAtColumn() { }
 }

app/Models/Channel.php

@@ -13,5 +13,4 @@ use Illuminate\Database\Eloquent\SoftDeletes;
 class Channel extends BaseModel
 {
     use HasFactory, SoftDeletes;
-    protected $dateFormat = 'U';
 }