new columns booked_by and booked_counter added, deleted unused migrations

back/api.py

@@ -139,11 +139,15 @@ async def change_book_status(data: pydantic_schemas.Book, current_user: Annotate
     if not announcement_to_change:
         raise HTTPException(status_code=404, detail="Item not found")
     # Проверяем, что объявление бронирует не владелец
-    if current_user.id == announcement_to_change.user_id:
+    if announcement_to_change.booked_by.Comparator.contains(current_user.id):
         raise HTTPException(status_code=403, detail="A user can't book his announcement")
     else:
-        # Инкрементируем поле booked_by на 1
-        announcement_to_change.booked_by += 1
+        # Инкрементируем поле booked_counter на 1
+        announcement_to_change.booked_counter += 1
+        # вставляем индекс забронировавшего пользователя в поле booked_by
+        await db.execute(mytable.insert(), data=[1,2,3])
+        
+        announcement_to_change.booked_by 
         # фиксируем изменения в бд
         await db.commit()
         await db.refresh(announcement_to_change)