feat: added n-to-1 relation between sales_order_item and printing_job model

business/models.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from decimal import Decimal
+from typing import List
 from django.db import models
 from flower.common import ModelBase
 from basic_info import models as basic_info_models
@@ -193,6 +194,11 @@ class PurchaseOrderItem(ModelBase):
     def total_amount(self):
         return round(self.price * self.real_quantity(), 2)
 
+    def split_quantity_of_rolls(self) -> List[int]:
+        if self.quantity_of_rolls:
+            return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
+        return []
+
 
 class SalesOrderKindEnum(models.IntegerChoices):
     """销售单类型"""
@@ -280,7 +286,7 @@ class SalesOrderItem(ModelBase):
     )
     printing_job = models.ForeignKey(
         'printing.PrintingJob',
-        on_delete=models.SET_NULL,
+        on_delete=models.PROTECT,
         related_name='sales_order_items',
         null=True,
         blank=True,
@@ -296,8 +302,7 @@ class SalesOrderItem(ModelBase):
         decimal_places=2,
         verbose_name='空差百分比',
     )
-    quantity_of_rolls = models.CharField(
-        max_length=255,
+    quantity_of_rolls = models.TextField(
         null=True,
         blank=True,
         verbose_name='各条数数量',
@@ -316,6 +321,11 @@ class SalesOrderItem(ModelBase):
         verbose_name = '销售单明细'
         verbose_name_plural = '销售单明细'
 
+    def split_quantity_of_rolls(self) -> List[int]:
+        if self.quantity_of_rolls:
+            return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
+        return []
+
     def real_quantity(self):
         return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
 
@@ -425,6 +435,11 @@ class PurchaseReturnOrderItem(ModelBase):
         verbose_name = '采购退货明细'
         verbose_name_plural = '采购退货明细'
 
+    def split_quantity_of_rolls(self) -> List[int]:
+        if self.quantity_of_rolls:
+            return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
+        return []
+
     def real_quantity(self):
         return round(self.quantity * (1 - self.empty_diff_percent / 100), 2)
 
@@ -542,6 +557,11 @@ class SalesReturnOrderItem(ModelBase):
 
     def total_amount(self):
         return round(self.price * self.real_quantity(), 2)
+    
+    def split_quantity_of_rolls(self) -> List[int]:
+        if self.quantity_of_rolls:
+            return [int(value) for value in self.quantity_of_rolls.split(',') if value.strip()]
+        return []
 
 
 class PaymentOrderStatusEnum(models.IntegerChoices):