fix list page

@@ -252,18 +252,20 @@ class DocView(GenericView, DocHandler):
         query = application_id_query & status_query & data_source_query & upload_finish_time_query & create_time_query
         val_tuple = ('id', 'application_id', 'upload_finish_time', 'create_time', 'data_source', 'status')
         doc_class, prefix = self.get_doc_class(business_type)
-        doc_queryset = doc_class.objects.filter(query).values(*val_tuple).order_by('-create_time')
-        doc_list = self.get_doc_list(doc_queryset, prefix)
-
-        total = len(doc_list)
+        total = doc_class.objects.filter(query).count()
         start_index = page_size * (page - 1)
         end_index = page_size * page
         if start_index >= total > 0:
             raise self.invalid_params('页数不存在')
+
+        doc_queryset = doc_class.objects.filter(query).values(*val_tuple).order_by('-create_time')[start_index: end_index]
+        doc_list = self.get_doc_list(doc_queryset, prefix)
+
+        # total = len(doc_list)
         pagination = {'current': page, 'total': total, 'page_size': page_size}
         res = {
             'pagination': pagination,
-            'doc_list': doc_list[start_index: end_index]
+            'doc_list': doc_list
         }
         self.running_log.info('[get doc list] [args={0}] [res={1}]'.format(args, res))
         return response.ok(data=res)