feat: all the business models supported human_id now but it wont change statements api. Added new field 'order_quantity' into sales_order model (integer, allow null).

business/models.py

@@ -133,6 +133,17 @@ class PurchaseOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounte
     def __str__(self):
         return f'采购订单 {self.id} - {self.supplier.name}'
 
+    @property
+    def human_id(self) -> str:
+        """
+        人类可读编号（虚拟编号，不落库）。
+
+        规则与 printing.PrintingOrder.human_id / SalesOrder.human_id 保持一致：YYYYMMDD{6位id}
+        """
+        if self.id is None or self.created_at is None:
+            return ""
+        return f"{self.created_at.year}{self.created_at.month:02d}{self.created_at.day:02d}{self.id:06d}"
+
     class Meta:
         verbose_name = '采购单'
         verbose_name_plural = '采购单'
@@ -252,6 +263,7 @@ 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):
@@ -405,6 +417,17 @@ class PurchaseReturnOrder(OrderItemsAggregationMixin, OrderDirectionMixin, Order
     def __str__(self):
         return f'采购退货 {self.id} - {self.supplier.name}'
 
+    @property
+    def human_id(self) -> str:
+        """
+        人类可读编号（虚拟编号，不落库）。
+
+        规则与 printing.PrintingOrder.human_id / SalesOrder.human_id 保持一致：YYYYMMDD{6位id}
+        """
+        if self.id is None or self.created_at is None:
+            return ""
+        return f"{self.created_at.year}{self.created_at.month:02d}{self.created_at.day:02d}{self.id:06d}"
+
     def get_direction(self) -> int:
         return -1
 
@@ -519,6 +542,17 @@ class SalesReturnOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCou
     def __str__(self):
         return f'销售退货 {self.id} - {self.customer.name}'
 
+    @property
+    def human_id(self) -> str:
+        """
+        人类可读编号（虚拟编号，不落库）。
+
+        规则与 printing.PrintingOrder.human_id / SalesOrder.human_id 保持一致：YYYYMMDD{6位id}
+        """
+        if self.id is None or self.created_at is None:
+            return ""
+        return f"{self.created_at.year}{self.created_at.month:02d}{self.created_at.day:02d}{self.id:06d}"
+
     def get_direction(self) -> int:
         return 1