feat: added custom signal for pre sales order created

business/pre_order_services.py

@@ -211,6 +211,28 @@ def create_pre_sales_order(
             ]
         )
 
+        # domain event: pre sales order created
+        # must be fired only after commit to avoid triggering on rollbacks
+        def _send_created_signal():
+            try:
+                from .signals import pre_sales_order_created
+
+                pre_sales_order_created.send(
+                    sender=models.PreSalesOrder,
+                    instance=pre_sales_order,
+                    created_by=created_by,
+                    operator=operator,
+                    items_count=len(normalized_items),
+                )
+            except Exception:
+                import logging
+
+                logging.getLogger(__name__).exception(
+                    '[business.pre_order_services] 触发 pre_sales_order_created signal 失败（已忽略）'
+                )
+
+        transaction.on_commit(_send_created_signal)
+
     pre_sales_order.refresh_from_db()
     return pre_sales_order