def set_liked(request):
    # http://127.0.0.1:8000/set_bookmark/?user_id=1&book_id=1&page_id
    if request.method == "GET":
        user_id = int(request.GET['user_id'])
        book_id = int(request.GET['book_id'])
        result = ''
        try:
            a = UserLikedBook.objects.get(user_id=user_id, liked_book=book_id)
            a.delete()
            result = 'del'
        except Exception as e:
            UserLikedBook.objects.create(user_id=user_id, liked_book=book_id)
            result = 'add'

        return HttpResponse(result, content_type='text/html')