check

printing/apps.py

@@ -1,5 +1,8 @@
+import logging
 from django.apps import AppConfig
 
+logger = logging.getLogger(__name__)
+
 
 class PrintingConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
@@ -17,3 +20,8 @@ class PrintingConfig(AppConfig):
             handlers.on_printing_job_process_completed,
             sender=PrintingJob
         )
+        
+        logger.info(
+            f'[printing.apps] 已注册 process_completed 信号处理器, '
+            f'sender={PrintingJob}, handler={handlers.on_printing_job_process_completed}'
+        )

printing/handlers.py

@@ -33,6 +33,11 @@ def on_printing_job_process_completed(sender, **kwargs):
     """
     from shipment.models import SalesItem, UnitChoices
     
+    logger.info(
+        f'[printing.handlers] 收到 process_completed 信号: '
+        f'sender={sender}, kwargs keys={list(kwargs.keys())}'
+    )
+    
     content_object = kwargs.get('content_object')
     business_object = kwargs.get('business_object')
     last_completed_by = kwargs.get('last_completed_by')
@@ -42,6 +47,7 @@ def on_printing_job_process_completed(sender, **kwargs):
         return
     
     printing_job = content_object
+    logger.info(f'[printing.handlers] 处理 PrintingJob #{printing_job.id}')
     
     # 从 settings 获取配置
     source_state_id = getattr(settings, 'PRINTING_SALES_ITEM_SOURCE_STATE_ID', None)

stateflow/services.py

@@ -2,6 +2,7 @@
 Stateflow业务逻辑服务层
 """
 import copy
+import logging
 from typing import Iterable, List, Optional, Tuple
 from django.contrib.auth import get_user_model
 from django.contrib.contenttypes.models import ContentType
@@ -10,6 +11,7 @@ from django.db import transaction
 from django.db.models import Exists, OuterRef, QuerySet
 from . import models
 
+logger = logging.getLogger(__name__)
 User = get_user_model()
 
 def ensure_business_object_bound_to_instance(
@@ -265,6 +267,13 @@ def advance_to_next_state(business_object: 'models.BusinessObject', user, **para
         content_object = business_object.content_object
         sender_class = content_object.__class__ if content_object else None
         
+        logger.info(
+            f'[stateflow] 发送 state_advanced 信号: '
+            f'sender={sender_class} (module={sender_class.__module__ if sender_class else None}), '
+            f'business_object_id={business_object.id}, '
+            f'state={next_state.name}, is_process_completed={is_process_completed}'
+        )
+        
         signals.state_advanced.send(
             sender=sender_class,
             process_id=business_object.process_id,
@@ -281,6 +290,10 @@ def advance_to_next_state(business_object: 'models.BusinessObject', user, **para
         
         if is_process_completed:
             # 流程全部完成，发送流程完成信号
+            logger.info(
+                f'[stateflow] 发送 process_completed 信号: '
+                f'sender={sender_class}, business_object_id={business_object.id}'
+            )
             signals.process_completed.send(
                 sender=sender_class,
                 process_id=business_object.process_id,