feat: allocation record for pre sales order

business/models.py

@@ -226,6 +226,13 @@ class SalesOrderStatusEnum(models.IntegerChoices):
     CANCELLED = 3, '作废'
 
 
+class AllocationRecordStatusEnum(models.IntegerChoices):
+    """配货记录状态"""
+
+    ACTIVE = 1, '有效'
+    CANCELLED = 2, '已撤销'
+
+
 class SalesOrder(OrderItemsAggregationMixin, OrderDirectionMixin, OrderCounterpartyMixin, ModelBase):
     """销售单模型"""
 
@@ -516,6 +523,57 @@ class PreSalesOrderItem(ModelBase):
         verbose_name_plural = '预销售单明细'
 
 
+class AllocationRecord(ModelBase):
+    """配货记录（执行记录）"""
+
+    id = models.BigAutoField(primary_key=True)
+    pre_sales_order_item = models.ForeignKey(
+        PreSalesOrderItem,
+        on_delete=models.CASCADE,
+        related_name='allocation_records',
+        verbose_name='预销售单明细',
+    )
+    stock_ids = models.TextField(blank=True, null=True, verbose_name='库存明细ID列表')
+    quantity = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='配货数量')
+    unit = models.CharField(max_length=50, verbose_name='单位')
+    status = models.IntegerField(
+        choices=AllocationRecordStatusEnum.choices,
+        default=AllocationRecordStatusEnum.ACTIVE,
+        verbose_name='状态',
+    )
+    scanned_by = models.ForeignKey(
+        basic_info_models.Employee,
+        on_delete=models.PROTECT,
+        related_name='allocation_records',
+        verbose_name='扫码人员',
+    )
+    scanned_at = models.DateTimeField(auto_now_add=True, verbose_name='扫码时间')
+    remarks = models.TextField(blank=True, null=True, verbose_name='备注')
+
+    def __str__(self):
+        return f'配货记录 {self.id} - 明细 {self.pre_sales_order_item_id}'
+
+    @property
+    def stock_id_list(self) -> List[int]:
+        raw = (self.stock_ids or '').strip()
+        if not raw:
+            return []
+        result: List[int] = []
+        for value in raw.split(','):
+            value = value.strip()
+            if not value:
+                continue
+            try:
+                result.append(int(value))
+            except ValueError:
+                continue
+        return result
+
+    class Meta:
+        verbose_name = '配货记录'
+        verbose_name_plural = '配货记录'
+
+
 class PrePurchaseOrder(ModelBase):
     """预采购单