Унификация использования конфигурации подключения к СУБД

App/Waybill/__init__.py

@@ -1,4 +1,4 @@
-from flask import request, Blueprint, render_template, session, redirect, url_for
+from flask import Blueprint, render_template, redirect, url_for, session, request
 from checker import check_auth
 from .model import index_waybill, form_waybill, clear, button_click, transaction_order_model
 from datetime import datetime

App/Waybill/model.py

@@ -1,5 +1,5 @@
 from Database.sql_provider import SQLProvider
-from Database.work import select_list, transaction
+from Database.work import select_list
 from Database.DBconnect import DBContextManager
 
 from flask import current_app, session
@@ -41,6 +41,8 @@ def index_waybill() -> list:
     cache_select = fetch_from_cache('items_cached', cache_config)(select_list)
     _sql = sql_provider.get('goods.sql', {})
     products = cache_select(db_config, _sql)
+    if products == None:
+        return []
  
     return products