From 3a07f1a272eca30eb1b0b1ff039a78e885f8961f Mon Sep 17 00:00:00 2001
From: yueli <yueli@example.com>
Date: Mon, 31 Aug 2026 10:28:22 +0800
Subject: [PATCH] =?UTF-8?q?fix(bom):=20BOM=20=E8=AF=A6=E6=83=85=E6=9F=A5?=
 =?UTF-8?q?=E8=AF=A2=E6=94=B9=E4=B8=BA=20LEFT=20JOIN=EF=BC=8C=E5=AD=90?=
 =?UTF-8?q?=E4=BB=B6=E7=89=A9=E6=96=99=E8=A2=AB=E5=88=A0=E5=90=8E=E4=BB=8D?=
 =?UTF-8?q?=E8=BF=94=E5=9B=9E=E7=88=B6=E4=BB=B6=E7=BB=93=E6=9E=84?=
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- get_bom_detail 使用 outerjoin 替代 join
- 子件物料被删除后 child_name 显示 [已删除物料] 而非误报 BOM 不存在
- 修复按 BOM 出库时因子件删除导致 404 BOM 不存在
---
 inventory-backend/app/services/bom_service.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/inventory-backend/app/services/bom_service.py b/inventory-backend/app/services/bom_service.py
index 2941fb3..d6e0cf0 100644
--- a/inventory-backend/app/services/bom_service.py
+++ b/inventory-backend/app/services/bom_service.py
@@ -293,7 +293,8 @@ class BomService:
             BomTable,
             MaterialBase.name.label('child_name'),
             MaterialBase.spec_model.label('child_spec')
-        ).join(
+        ).outerjoin(
+            # ★ LEFT JOIN：子件物料被删除后仍返回父件 BOM 结构，避免误报 "BOM 不存在"
             MaterialBase, BomTable.child_id == MaterialBase.id
         ).filter(
             BomTable.bom_no == bom_no
@@ -322,7 +323,7 @@ class BomService:
         for bom, child_name, child_spec in rows:
             children.append({
                 'child_id': bom.child_id,
-                'child_name': child_name,
+                'child_name': child_name or '[已删除物料]',
                 'child_spec': child_spec or '',
                 'dosage': float(bom.dosage) if bom.dosage else 0.0,
                 'remark': bom.remark or ''