perf:mlog/handover/mlogb列表消除N+1,select_related精简改prefetch,修Handover.handoverb属性绕过prefetch的bug

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/wpm/models.py

@@ -721,7 +721,8 @@ class Handover(CommonADModel):
 
     @property
     def handoverb(self):
-        return Handoverb.objects.filter(handover=self)
+        # 用反向关联管理器, 以命中 list 接口的 Prefetch("b_handover") 缓存, 避免 N+1
+        return self.b_handover.all()
 
 class Handoverb(BaseModel):
     """TN: 子级交接记录

apps/wpm/views.py

@@ -285,6 +285,7 @@ class MlogViewSet(CustomModelViewSet):
         "handle_user",
         "equipment",
         "mgroup",
+        "mgroup__belong_dept",
         "material_in",
         "material_out",
         "material_in__process",
@@ -298,7 +299,22 @@ class MlogViewSet(CustomModelViewSet):
     #                          'equipment_2', 'material_in', 'material_out', 'route__routepack', 'submit_user',
     #                          'supplier', 'ticket', 'mgroup__process', 'test_user', 'handle_leader', 'test_user', 'team',
     #                          'material_in__process', 'material_out__process', "shift", "route"]
-    prefetch_related_fields = ["handle_users", "material_outs", "equipments"]
+    prefetch_related_fields = [
+        "handle_users",
+        "material_outs",
+        "equipments",
+        # 以下为可选的一对一/外键, 用 prefetch(每个关系仅 1 条 IN 查询)避免 N+1
+        # 又不加宽主查询的 JOIN
+        "team",
+        "supplier",
+        "mtask",
+        "shift",
+        "test_user",
+        "handle_user_2",
+        "handle_leader",
+        "equipment_2",
+        "ticket__state",
+    ]
     filterset_class = MlogFilter
     search_fields = [
         "material_in__name",
@@ -342,27 +358,7 @@ class MlogViewSet(CustomModelViewSet):
         ]
     )
     def list(self, request, *args, **kwargs):
-        from django.db import connection
+        return super().list(request, *args, **kwargs)
-        from django.conf import settings
-
-        # 清空之前的查询记录
-        connection.queries_log.clear()
-
-        # 调用父类的 list 方法
-        response = super().list(request, *args, **kwargs)
-
-        # 获取执行的 SQL 查询
-        queries = connection.queries
-        sql_queries = []
-
-        for query in queries:
-            sql_queries.append({"sql": query["sql"], "time": query["time"], "params": query.get("params", [])})
-
-        # 将 SQL 信息添加到响应中（仅在调试模式）
-        if settings.DEBUG:
-            response.data["_debug"] = {"sql_queries": sql_queries, "total_queries": len(queries), "total_time": sum(float(q["time"]) for q in queries)}
-
-        return response
 
     def add_info_for_list(self, data):
         czx_dict = {}
@@ -590,10 +586,10 @@ class HandoverViewSet(CustomModelViewSet):
     queryset = Handover.objects.all()
     list_serializer_class = HandoverListSerializer
     serializer_class = HandoverSerializer
-    select_related_fields = ["send_user", "send_mgroup", "send_dept", "recive_user", "recive_mgroup", "recive_dept", "wm", "material_changed", "material"]
+    select_related_fields = ["send_user", "send_mgroup", "send_dept", "recive_user", "recive_mgroup", "recive_dept", "wm", "material_changed", "material", "material__process"]
     filterset_class = HandoverFilter
     search_fields = ["material__name", "material__number", "material__specification", "batch", "material__model", "b_handover__batch", "new_batch", "wm__batch"]
-    prefetch_related_fields = [Prefetch("b_handover", queryset=Handoverb.objects.select_related("wm__defect"))]
+    prefetch_related_fields = [Prefetch("b_handover", queryset=Handoverb.objects.select_related("wm__defect")), "ticket__state"]
 
     def perform_destroy(self, instance: Handover):
         user = self.request.user
@@ -782,7 +778,7 @@ class MlogbViewSet(CustomListModelMixin, CustomGenericViewSet):
     perms_map = {"get": "*"}
     queryset = Mlogb.objects.all()
     serializer_class = MlogbDetailSerializer
-    select_related_fields = ["material_out", "material_in", "test_user", "wm_in__defect"]
+    select_related_fields = ["material_out", "material_out__process", "material_in", "material_in__process", "test_user", "wm_in__defect"]
     prefetch_related_fields = [
         Prefetch("mlogbdefect_set", queryset=MlogbDefect.objects.select_related("defect")),
     ]