fix: moved order_quantity to sales_order_item

business/models.py

@@ -263,7 +263,6 @@ class SalesOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpa
         default=SalesOrderStatusEnum.PENDING,
         verbose_name='状态',
     )
-    order_quantity = models.IntegerField(null=True, blank=True, verbose_name='下单数量')
     remarks = models.TextField(blank=True, null=True, verbose_name='备注')
 
     def __str__(self):
@@ -339,6 +338,7 @@ class SalesOrderItem(ModelBase):
         verbose_name='消耗入库明细ID列表',
     )
     batch_number = models.CharField(null=True, blank=True, max_length=100, verbose_name='批次号')
+    order_quantity = models.IntegerField(null=True, blank=True, verbose_name='下单数量')
     remarks = models.TextField(blank=True, null=True, verbose_name='备注')
 
     class Meta: