feat: added custom signal for pre sales order created

business/apps.py

@@ -1,7 +1,26 @@
+import logging
 from django.apps import AppConfig
 
+logger = logging.getLogger(__name__)
+
 
 class BusinessConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'business'
     verbose_name = '业务模块'
+
+    def ready(self):
+        from .models import PreSalesOrder
+        from . import handlers
+        from .signals import pre_sales_order_created
+
+        pre_sales_order_created.connect(
+            handlers.on_pre_sales_order_created,
+            sender=PreSalesOrder,
+            dispatch_uid='business.on_pre_sales_order_created',
+        )
+
+        logger.info(
+            f'[business.apps] 已注册 pre_sales_order_created 信号处理器, '
+            f'sender={PreSalesOrder}, handler={handlers.on_pre_sales_order_created}'
+        )