fix

printing/handlers.py

@@ -5,6 +5,8 @@ Printing 模块信号处理函数
 """
 
 import logging
+from decimal import Decimal, InvalidOperation
+from django.conf import settings
 from django.db import transaction
 
 logger = logging.getLogger(__name__)
@@ -15,40 +17,80 @@ def on_printing_job_process_completed(sender, **kwargs):
     PrintingJob 流程完成时的处理
     
     当 PrintingJob 的工艺流程全部完成时，自动创建 SalesItem（销售品）。
+    数量和单位从指定的流程节点参数中获取（通过 settings 配置）。
+    
+    配置项：
+        PRINTING_SALES_ITEM_SOURCE_STATE_ID: 指定从哪个 State 获取参数
+        PRINTING_SALES_ITEM_QUANTITY_KEY: 数量参数的 key
+        PRINTING_SALES_ITEM_UNIT_KEY: 单位参数的 key
     
     Args:
         sender: PrintingJob 类
         content_object: PrintingJob 实例
+        business_object: BusinessObject 实例
         last_completed_by: 最后步骤操作人
         其他参数见 stateflow.signals.process_completed
     """
     from shipment.models import SalesItem, UnitChoices
     
     content_object = kwargs.get('content_object')
+    business_object = kwargs.get('business_object')
     last_completed_by = kwargs.get('last_completed_by')
     
-    if content_object is None:
-        logger.warning('process_completed 信号缺少 content_object')
+    if content_object is None or business_object is None:
+        logger.warning('process_completed 信号缺少 content_object 或 business_object')
         return
     
     printing_job = content_object
     
-    # 单位映射：PrintingJob.unit（字符串）→ SalesItem.unit（IntegerChoices）
-    unit_mapping = {
-        '米': UnitChoices.METER,
-        'm': UnitChoices.METER,
-        'M': UnitChoices.METER,
-        '件': UnitChoices.PIECE,
-        '码': UnitChoices.YARD,
-        'yd': UnitChoices.YARD,
-        'YD': UnitChoices.YARD,
-        '个': UnitChoices.UNIT,
-        'pcs': UnitChoices.UNIT,
-        'PCS': UnitChoices.UNIT,
-    }
+    # 从 settings 获取配置
+    source_state_id = getattr(settings, 'PRINTING_SALES_ITEM_SOURCE_STATE_ID', None)
+    quantity_key = getattr(settings, 'PRINTING_SALES_ITEM_QUANTITY_KEY', '米数')
     
-    # 默认单位为"件"
-    sales_unit = unit_mapping.get(printing_job.unit, UnitChoices.PIECE)
+    if source_state_id is None:
+        logger.debug(
+            f'PrintingJob #{printing_job.id} 流程完成，'
+            f'但 PRINTING_SALES_ITEM_SOURCE_STATE_ID 未配置，跳过销售品创建'
+        )
+        return
+    
+    # 从 business_object 的状态流转记录中找到指定 state_id 的记录
+    state_log = business_object.state_logs.filter(
+        state_id=source_state_id,
+        is_cancelled=False
+    ).first()
+    
+    if state_log is None:
+        logger.warning(
+            f'PrintingJob #{printing_job.id} 流程完成，'
+            f'但未找到 state_id={source_state_id} 的已完成记录，跳过销售品创建'
+        )
+        return
+    
+    # 获取参数汇总
+    params = state_log.get_all_parameters_summary()
+    
+    # 获取数量
+    quantity_raw = params.get(quantity_key)
+    if quantity_raw is None:
+        logger.warning(
+            f'PrintingJob #{printing_job.id} 流程完成，'
+            f'但 state_id={source_state_id} 的参数中缺少 {quantity_key}，跳过销售品创建'
+        )
+        return
+    
+    # 转换数量为 Decimal
+    try:
+        quantity = Decimal(str(quantity_raw))
+    except (InvalidOperation, ValueError, TypeError) as e:
+        logger.warning(
+            f'PrintingJob #{printing_job.id} 流程完成，'
+            f'但 {quantity_key}={quantity_raw} 无法转换为数字: {e}，跳过销售品创建'
+        )
+        return
+    
+    # 单位固定为"米"
+    sales_unit = UnitChoices.METER
     
     # 获取产品名称
     product_name = printing_job.product.name if printing_job.product else '未知产品'
@@ -63,7 +105,7 @@ def on_printing_job_process_completed(sender, **kwargs):
             sales_item = SalesItem.objects.create(
                 shipment=None,  # 暂不关联出货单，待后续分配
                 name=product_name,
-                quantity=printing_job.quantity,
+                quantity=quantity,
                 unit=sales_unit,
                 created_by=last_completed_by,
                 printing_job_id=printing_job.id,
@@ -73,7 +115,7 @@ def on_printing_job_process_completed(sender, **kwargs):
             logger.info(
                 f'PrintingJob #{printing_job.id} 流程完成，'
                 f'已创建销售品 SalesItem #{sales_item.id}: '
-                f'{product_name} x {printing_job.quantity}'
+                f'{product_name} x {quantity} {sales_item.get_unit_display()}'
             )
             
     except Exception as e: