perf: 优化mlog和handover的查询

apps/wpm/filters.py

@@ -111,7 +111,9 @@ class MlogFilter(filters.FilterSet):
         }
     
     def filter_cbatch(self, queryset, name, value):
-        return queryset.filter(Q(b_mlog__batch=value) | Q(batch=value)).distinct()
+        qs1 = queryset.filter(batch=value)
+        qs2 = queryset.filter(b_mlog__batch=value)
+        return qs1.union(qs2)
 
 
 class HandoverFilter(filters.FilterSet):
@@ -126,7 +128,9 @@ class HandoverFilter(filters.FilterSet):
         return queryset.filter(send_dept__id=value)|queryset.filter(recive_dept__id=value)
     
     def filter_cbatch(self, queryset, name, value):
-        return queryset.filter(Q(b_handover__batch=value) | Q(batch=value)).distinct()
+        qs1 = queryset.filter(Q(batch=value)|Q(new_batch=value))
+        qs2 = queryset.filter(Q(b_handover__batch=value))
+        return qs1.union(qs2)
 
     class Meta:
         model = Handover

apps/wpm/views.py

@@ -384,6 +384,7 @@ class HandoverViewSet(CustomModelViewSet):
     filterset_class = HandoverFilter
     search_fields = ['id', 'material__name',
                     'material__number', 'material__specification', 'batch', 'material__model', 'b_handover__batch', "new_batch"]
+    prefetch_related_fields = ["b_handover"]
 
     def perform_destroy(self, instance):
         user = self.request.user