update order and order item db model

backend/app/Model/Order.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 namespace App\Model;
 
-use Hyperf\DbConnection\Model\Model;
+use App\Model\OrderItem;
 
 /**
  * @property int $id 主键
@@ -58,13 +58,19 @@ class Order extends Model
      */
     protected array $casts = ['id' => 'integer', 'company_id' => 'integer', 'platform_id' => 'integer', 'store_id' => 'integer', 'order_status_id' => 'integer', 'payment_method_id' => 'integer', 'presale' => 'boolean', 'order_type_id' => 'integer', 'created_at' => 'datetime', 'updated_at' => 'datetime'];
 
-
     /**
-     * Get the order items for the order.
+     * 获取订单子项（基于 hypertable 分区键查询）
+     *
+     * @return \Hyperf\Database\Model\Collection
      */
-    public function items()
+    public function getOrderItems()
     {
-        return $this->hasMany(OrderItem::class, 'order_id', 'id');
+        return OrderItem::query()
+            ->where('platform_id', $this->platform_id)
+            ->where('store_id', $this->store_id)
+            ->where('platform_order_id', $this->platform_order_id)
+            ->where('created_date', $this->created_date)
+            ->get();
     }
 }