CROW_ROUTE(app, "/contacts")
    ([&collection]()
    {
        mongocxx::options::find opts;
        opts.limit(10);
        auto docs=collection.find({}, opts);
        std::ostringstream os;
       for (auto&& doc : docs)
        {
                os<<bsoncxx::to_json(doc)<<endl;
        }
        return crow::response(os.str());
    });

    CROW_ROUTE(app, "/contacts")
    ([&collection]()
    {
        mongocxx::options::find opts;
        opts.limit(10);
        auto docs=collection.find({}, opts);
        std::ostringstream os;
       for (auto&& doc : docs)
        {
                os<<bsoncxx::to_json(doc)<<endl;
        }
        return crow::response(os.str());
    });

mongocxx::instance inst{};
string mongoConnect=std::string(getenv("MONGODB_URI"));
mongocxx::client conn{mongocxx::uri{mongoConnect}};
auto collection=conn["containers-us-west-175.railway.app:7978"]["contacts"];

mongocxx::instance inst{};
string mongoConnect=std::string(getenv("MONGODB_URI"));
mongocxx::client conn{mongocxx::uri{mongoConnect}};
auto collection=conn["containers-us-west-175.railway.app:7978"]["contacts"];