feat: update personal stats and cms change reuqest method

apps/user/cms_relation.py

@@ -78,7 +78,8 @@ class CmsTeacherStudentRelationViewSet(viewsets.ModelViewSet):
     filter_backends = [DjangoFilterBackend, filters.SearchFilter]
     filterset_fields = ['teacher', 'student', 'status']
     search_fields = ['teacher__real_name', 'teacher__phone', 'student__real_name', 'student__phone']
-    http_method_names = ['get', 'post', 'patch', 'delete', 'head', 'options']
+    # 仅 GET / POST：查=GET，增删改=POST（编辑→{id}/update/，停用→{id}/disable/）
+    http_method_names = ['get', 'post', 'head', 'options']
 
     def get_queryset(self):
         qs = TeacherStudentRelation.objects.select_related('teacher', 'student').all().order_by('-created_at')
@@ -88,7 +89,7 @@ class CmsTeacherStudentRelationViewSet(viewsets.ModelViewSet):
         return qs.filter(teacher__institution_id=user.institution_id)
 
     def get_serializer_class(self):
-        if self.action in ('create', 'update', 'partial_update'):
+        if self.action in ('create', 'update_relation'):
             return CmsRelationWriteSerializer
         return CmsRelationSerializer
 
@@ -98,14 +99,23 @@ class CmsTeacherStudentRelationViewSet(viewsets.ModelViewSet):
         rel = write.save()
         return Response(CmsRelationSerializer(rel).data, status=status.HTTP_201_CREATED)
 
-    def update(self, request, *args, **kwargs):
-        partial = kwargs.pop('partial', False)
+    @extend_schema(summary='CMS-REL-3 编辑师生关系', tags=['CMS-师生关系'])
+    @action(detail=True, methods=['post'], url_path='update')
+    def update_relation(self, request, pk=None):
+        """编辑师生关系（POST 局部更新，等价旧 PATCH /{id}/）。"""
         instance = self.get_object()
-        write = self.get_serializer(instance, data=request.data, partial=partial)
+        write = self.get_serializer(instance, data=request.data, partial=True)
         write.is_valid(raise_exception=True)
         rel = write.save()
         return Response(CmsRelationSerializer(rel).data)
 
+    @extend_schema(summary='CMS-REL-4 停用师生关系（逻辑删除）', tags=['CMS-师生关系'])
+    @action(detail=True, methods=['post'], url_path='disable')
+    def disable(self, request, pk=None):
+        """停用师生关系（软删除，等价旧 DELETE /{id}/）。"""
+        self.get_object().delete()
+        return Response({'message': '已停用'})
+
     @extend_schema(summary='CMS-REL-4 下载师生关系导入模板', tags=['CMS-师生关系'])
     @action(detail=False, methods=['get'], url_path='import-template')
     def import_template(self, request):